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add new test case to show serious bug
[pve-firewall.git] / src / PVE / Firewall.pm
CommitLineData
b6360c3f
DM		 1package PVE::Firewall;
2
3use warnings;
4use strict;
cbb5d6f3 5use POSIX;
b6360c3f 6use Data::Dumper;
09d5f68e 7use Digest::SHA;
c8301d63 8use PVE::INotify;
7ca36671 9use PVE::Exception qw(raise raise_param_exc);
e74a87f5 10use PVE::JSONSchema qw(register_standard_option get_standard_option);
c8301d63 11use PVE::Cluster;
5f0a912c 12use PVE::ProcFSTools;
009ee3ac 13use PVE::Tools qw($IPV4RE);
6b9f68a2 14use File::Basename;
5e1267a5
DM		 15use File::Path;
16use IO::File;
ecbea048 17use Net::IP;
1a301a8d 18use PVE::Tools qw(run_command lock_file dir_glob_foreach);
30c1ae52 19use Encode;
ecbea048 20
63c91681 21my $hostfw_conf_filename = "/etc/pve/local/host.fw";
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 $have_pve_manager = 1;
36};
37
009ee3ac
DM		 38PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr);
39sub pve_verify_ipv4_or_cidr {
40 my ($cidr, $noerr) = @_;
41
30f1b100 42 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
e34d0e58 43 return $cidr if Net::IP->new($cidr);
30f1b100
DM		 44 return undef if $noerr;
45 die Net::IP::Error() . "\n";
009ee3ac
DM		 46 }
47 return undef if $noerr;
48 die "value does not look like a valid IP address or CIDR network\n";
49}
50
e74a87f5
DM		 51PVE::JSONSchema::register_standard_option('ipset-name', {
52 description => "IP set name.",
53 type => 'string',
54 pattern => '[A-Za-z][A-Za-z0-9\-\_]+',
387d0ffc 55 minLength => 2,
e34d0e58 56 maxLength => 20,
387d0ffc
DM		 57});
58
81d574a7
DM		 59PVE::JSONSchema::register_standard_option('pve-fw-alias', {
60 description => "Alias name.",
61 type => 'string',
62 pattern => '[A-Za-z][A-Za-z0-9\-\_]+',
63 minLength => 2,
e34d0e58 64 maxLength => 20,
81d574a7
DM		 65});
66
6302c41f
DM		 67PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
68 description => "Log level.",
e34d0e58 69 type => 'string',
6302c41f
DM		 70 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
71 optional => 1,
72});
73
44be8ceb
DM		 74my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
75my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
c14dacdf 76
387d0ffc
DM		 77PVE::JSONSchema::register_standard_option('pve-security-group-name', {
78 description => "Security Group name.",
79 type => 'string',
44be8ceb 80 pattern => $security_group_name_pattern,
387d0ffc 81 minLength => 2,
e34d0e58 82 maxLength => 20,
e74a87f5 83});
009ee3ac 84
cbb5d6f3
DM		 85my $feature_ipset_nomatch = 0;
86eval {
87 my (undef, undef, $release) = POSIX::uname();
88 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
89 my ($major, $minor) = ($1, $2);
90 $feature_ipset_nomatch = 1 if ($major > 3) ||
91 ($major == 3 && $minor >= 7);
92 }
93
94};
95
5e1267a5 96use Data::Dumper;
b6360c3f 97
c8301d63
DM		 98my $nodename = PVE::INotify::nodename();
99
06320eb0
DM		 100my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
101
56f313f7 102my $default_log_level = 'nolog'; # avoid logs by default
2d404ffc
DM		 103
104my $log_level_hash = {
105 debug => 7,
106 info => 6,
107 notice => 5,
108 warning => 4,
109 err => 3,
110 crit => 2,
111 alert => 1,
112 emerg => 0,
113};
114
857f62c8 115# imported/converted from: /usr/share/shorewall/macro.*
961b4928 116my $pve_fw_macros = {
857f62c8 117 'Amanda' => [
ebd54ae9 118 "Amanda Backup",
857f62c8
DM		 119 { action => 'PARAM', proto => 'udp', dport => '10080' },
120 { action => 'PARAM', proto => 'tcp', dport => '10080' },
121 ],
122 'Auth' => [
ebd54ae9 123 "Auth (identd) traffic",
857f62c8
DM		 124 { action => 'PARAM', proto => 'tcp', dport => '113' },
125 ],
126 'BGP' => [
ebd54ae9 127 "Border Gateway Protocol traffic",
857f62c8
DM		 128 { action => 'PARAM', proto => 'tcp', dport => '179' },
129 ],
130 'BitTorrent' => [
ebd54ae9 131 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 132 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 133 { action => 'PARAM', proto => 'udp', dport => '6881' },
134 ],
135 'BitTorrent32' => [
ebd54ae9 136 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 137 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
138 { action => 'PARAM', proto => 'udp', dport => '6881' },
139 ],
140 'CVS' => [
ebd54ae9 141 "Concurrent Versions System pserver traffic",
857f62c8
DM		 142 { action => 'PARAM', proto => 'tcp', dport => '2401' },
143 ],
144 'Citrix' => [
ebd54ae9 145 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 146 { action => 'PARAM', proto => 'tcp', dport => '1494' },
147 { action => 'PARAM', proto => 'udp', dport => '1604' },
148 { action => 'PARAM', proto => 'tcp', dport => '2598' },
149 ],
150 'DAAP' => [
ebd54ae9 151 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 152 { action => 'PARAM', proto => 'tcp', dport => '3689' },
153 { action => 'PARAM', proto => 'udp', dport => '3689' },
154 ],
155 'DCC' => [
ebd54ae9 156 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 157 { action => 'PARAM', proto => 'tcp', dport => '6277' },
158 ],
159 'DHCPfwd' => [
d2c3266d 160 "Forwarded DHCP traffic",
857f62c8 161 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
857f62c8
DM		 162 ],
163 'DNS' => [
ebd54ae9 164 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 165 { action => 'PARAM', proto => 'udp', dport => '53' },
166 { action => 'PARAM', proto => 'tcp', dport => '53' },
167 ],
168 'Distcc' => [
ebd54ae9 169 "Distributed Compiler service",
857f62c8
DM		 170 { action => 'PARAM', proto => 'tcp', dport => '3632' },
171 ],
857f62c8 172 'FTP' => [
ebd54ae9 173 "File Transfer Protocol",
857f62c8
DM		 174 { action => 'PARAM', proto => 'tcp', dport => '21' },
175 ],
176 'Finger' => [
ebd54ae9 177 "Finger protocol (RFC 742)",
857f62c8
DM		 178 { action => 'PARAM', proto => 'tcp', dport => '79' },
179 ],
180 'GNUnet' => [
ebd54ae9 181 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 182 { action => 'PARAM', proto => 'tcp', dport => '2086' },
183 { action => 'PARAM', proto => 'udp', dport => '2086' },
184 { action => 'PARAM', proto => 'tcp', dport => '1080' },
185 { action => 'PARAM', proto => 'udp', dport => '1080' },
186 ],
187 'GRE' => [
d2c3266d 188 "Generic Routing Encapsulation tunneling protocol",
857f62c8 189 { action => 'PARAM', proto => '47' },
857f62c8
DM		 190 ],
191 'Git' => [
ebd54ae9 192 "Git distributed revision control traffic",
857f62c8
DM		 193 { action => 'PARAM', proto => 'tcp', dport => '9418' },
194 ],
857f62c8 195 'HKP' => [
ebd54ae9 196 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 197 { action => 'PARAM', proto => 'tcp', dport => '11371' },
198 ],
199 'HTTP' => [
ebd54ae9 200 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 201 { action => 'PARAM', proto => 'tcp', dport => '80' },
202 ],
857f62c8 203 'HTTPS' => [
ebd54ae9 204 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 205 { action => 'PARAM', proto => 'tcp', dport => '443' },
206 ],
207 'ICPV2' => [
ebd54ae9 208 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 209 { action => 'PARAM', proto => 'udp', dport => '3130' },
210 ],
211 'ICQ' => [
ebd54ae9 212 "AOL Instant Messenger traffic",
857f62c8
DM		 213 { action => 'PARAM', proto => 'tcp', dport => '5190' },
214 ],
215 'IMAP' => [
ebd54ae9 216 "Internet Message Access Protocol",
857f62c8
DM		 217 { action => 'PARAM', proto => 'tcp', dport => '143' },
218 ],
219 'IMAPS' => [
ebd54ae9 220 "Internet Message Access Protocol over SSL",
857f62c8
DM		 221 { action => 'PARAM', proto => 'tcp', dport => '993' },
222 ],
223 'IPIP' => [
d2c3266d 224 "IPIP capsulation traffic",
857f62c8 225 { action => 'PARAM', proto => '94' },
857f62c8 226 ],
857f62c8 227 'IPsec' => [
d2c3266d 228 "IPsec traffic",
857f62c8
DM		 229 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
230 { action => 'PARAM', proto => '50' },
857f62c8
DM		 231 ],
232 'IPsecah' => [
d2c3266d 233 "IPsec authentication (AH) traffic",
857f62c8
DM		 234 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
235 { action => 'PARAM', proto => '51' },
857f62c8
DM		 236 ],
237 'IPsecnat' => [
d2c3266d 238 "IPsec traffic and Nat-Traversal",
857f62c8
DM		 239 { action => 'PARAM', proto => 'udp', dport => '500' },
240 { action => 'PARAM', proto => 'udp', dport => '4500' },
241 { action => 'PARAM', proto => '50' },
857f62c8
DM		 242 ],
243 'IRC' => [
ebd54ae9 244 "Internet Relay Chat traffic",
857f62c8
DM		 245 { action => 'PARAM', proto => 'tcp', dport => '6667' },
246 ],
857f62c8 247 'Jetdirect' => [
ebd54ae9 248 "HP Jetdirect printing",
857f62c8
DM		 249 { action => 'PARAM', proto => 'tcp', dport => '9100' },
250 ],
251 'L2TP' => [
ebd54ae9 252 "Layer 2 Tunneling Protocol traffic",
857f62c8 253 { action => 'PARAM', proto => 'udp', dport => '1701' },
857f62c8
DM		 254 ],
255 'LDAP' => [
ebd54ae9 256 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 257 { action => 'PARAM', proto => 'tcp', dport => '389' },
258 ],
259 'LDAPS' => [
ebd54ae9 260 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 261 { action => 'PARAM', proto => 'tcp', dport => '636' },
262 ],
263 'MSNP' => [
ebd54ae9 264 "Microsoft Notification Protocol",
857f62c8
DM		 265 { action => 'PARAM', proto => 'tcp', dport => '1863' },
266 ],
267 'MSSQL' => [
ebd54ae9 268 "Microsoft SQL Server",
857f62c8
DM		 269 { action => 'PARAM', proto => 'tcp', dport => '1433' },
270 ],
271 'Mail' => [
ebd54ae9 272 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 273 { action => 'PARAM', proto => 'tcp', dport => '25' },
274 { action => 'PARAM', proto => 'tcp', dport => '465' },
275 { action => 'PARAM', proto => 'tcp', dport => '587' },
276 ],
277 'Munin' => [
ebd54ae9 278 "Munin networked resource monitoring traffic",
857f62c8
DM		 279 { action => 'PARAM', proto => 'tcp', dport => '4949' },
280 ],
281 'MySQL' => [
ebd54ae9 282 "MySQL server",
857f62c8
DM		 283 { action => 'PARAM', proto => 'tcp', dport => '3306' },
284 ],
285 'NNTP' => [
ebd54ae9 286 "NNTP traffic (Usenet).",
857f62c8
DM		 287 { action => 'PARAM', proto => 'tcp', dport => '119' },
288 ],
289 'NNTPS' => [
ebd54ae9 290 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 291 { action => 'PARAM', proto => 'tcp', dport => '563' },
292 ],
293 'NTP' => [
ebd54ae9 294 "Network Time Protocol (ntpd)",
857f62c8
DM		 295 { action => 'PARAM', proto => 'udp', dport => '123' },
296 ],
857f62c8 297 'OSPF' => [
ebd54ae9 298 "OSPF multicast traffic",
857f62c8
DM		 299 { action => 'PARAM', proto => '89' },
300 ],
301 'OpenVPN' => [
ebd54ae9 302 "OpenVPN traffic",
857f62c8
DM		 303 { action => 'PARAM', proto => 'udp', dport => '1194' },
304 ],
305 'PCA' => [
ebd54ae9 306 "Symantec PCAnywere (tm)",
857f62c8
DM		 307 { action => 'PARAM', proto => 'udp', dport => '5632' },
308 { action => 'PARAM', proto => 'tcp', dport => '5631' },
309 ],
310 'POP3' => [
ebd54ae9 311 "POP3 traffic",
857f62c8
DM		 312 { action => 'PARAM', proto => 'tcp', dport => '110' },
313 ],
314 'POP3S' => [
ebd54ae9 315 "Encrypted POP3 traffic",
857f62c8
DM		 316 { action => 'PARAM', proto => 'tcp', dport => '995' },
317 ],
318 'PPtP' => [
ebd54ae9 319 "Point-to-Point Tunneling Protocol",
857f62c8 320 { action => 'PARAM', proto => '47' },
857f62c8
DM		 321 { action => 'PARAM', proto => 'tcp', dport => '1723' },
322 ],
323 'Ping' => [
ebd54ae9 324 "ICMP echo request",
269d4f13 325 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 326 ],
327 'PostgreSQL' => [
ebd54ae9 328 "PostgreSQL server",
857f62c8
DM		 329 { action => 'PARAM', proto => 'tcp', dport => '5432' },
330 ],
331 'Printer' => [
ebd54ae9 332 "Line Printer protocol printing",
857f62c8
DM		 333 { action => 'PARAM', proto => 'tcp', dport => '515' },
334 ],
335 'RDP' => [
ebd54ae9 336 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 337 { action => 'PARAM', proto => 'tcp', dport => '3389' },
338 ],
d2c3266d 339 'RIP' => [
ebd54ae9 340 "Routing Information Protocol (bidirectional)",
857f62c8 341 { action => 'PARAM', proto => 'udp', dport => '520' },
857f62c8
DM		 342 ],
343 'RNDC' => [
ebd54ae9 344 "BIND remote management protocol",
857f62c8
DM		 345 { action => 'PARAM', proto => 'tcp', dport => '953' },
346 ],
347 'Razor' => [
ebd54ae9 348 "Razor Antispam System",
857f62c8
DM		 349 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
350 ],
351 'Rdate' => [
ebd54ae9 352 "Remote time retrieval (rdate)",
857f62c8
DM		 353 { action => 'PARAM', proto => 'tcp', dport => '37' },
354 ],
355 'Rsync' => [
ebd54ae9 356 "Rsync server",
857f62c8
DM		 357 { action => 'PARAM', proto => 'tcp', dport => '873' },
358 ],
359 'SANE' => [
ebd54ae9 360 "SANE network scanning",
857f62c8
DM		 361 { action => 'PARAM', proto => 'tcp', dport => '6566' },
362 ],
363 'SMB' => [
ebd54ae9 364 "Microsoft SMB traffic",
857f62c8
DM		 365 { action => 'PARAM', proto => 'udp', dport => '135,445' },
366 { action => 'PARAM', proto => 'udp', dport => '137:139' },
367 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
368 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
369 ],
857f62c8 370 'SMBswat' => [
ebd54ae9 371 "Samba Web Administration Tool",
857f62c8
DM		 372 { action => 'PARAM', proto => 'tcp', dport => '901' },
373 ],
374 'SMTP' => [
ebd54ae9 375 "Simple Mail Transfer Protocol",
857f62c8
DM		 376 { action => 'PARAM', proto => 'tcp', dport => '25' },
377 ],
378 'SMTPS' => [
ebd54ae9 379 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 380 { action => 'PARAM', proto => 'tcp', dport => '465' },
381 ],
382 'SNMP' => [
ebd54ae9 383 "Simple Network Management Protocol",
857f62c8
DM		 384 { action => 'PARAM', proto => 'udp', dport => '161:162' },
385 { action => 'PARAM', proto => 'tcp', dport => '161' },
386 ],
387 'SPAMD' => [
ebd54ae9 388 "Spam Assassin SPAMD traffic",
857f62c8
DM		 389 { action => 'PARAM', proto => 'tcp', dport => '783' },
390 ],
391 'SSH' => [
ebd54ae9 392 "Secure shell traffic",
857f62c8
DM		 393 { action => 'PARAM', proto => 'tcp', dport => '22' },
394 ],
395 'SVN' => [
ebd54ae9 396 "Subversion server (svnserve)",
857f62c8
DM		 397 { action => 'PARAM', proto => 'tcp', dport => '3690' },
398 ],
399 'SixXS' => [
ebd54ae9 400 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 401 { action => 'PARAM', proto => 'tcp', dport => '3874' },
402 { action => 'PARAM', proto => 'udp', dport => '3740' },
403 { action => 'PARAM', proto => '41' },
404 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
405 ],
406 'Squid' => [
ebd54ae9 407 "Squid web proxy traffic",
857f62c8
DM		 408 { action => 'PARAM', proto => 'tcp', dport => '3128' },
409 ],
410 'Submission' => [
ebd54ae9 411 "Mail message submission traffic",
857f62c8
DM		 412 { action => 'PARAM', proto => 'tcp', dport => '587' },
413 ],
414 'Syslog' => [
ebd54ae9 415 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 416 { action => 'PARAM', proto => 'udp', dport => '514' },
417 { action => 'PARAM', proto => 'tcp', dport => '514' },
418 ],
419 'TFTP' => [
ebd54ae9 420 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 421 { action => 'PARAM', proto => 'udp', dport => '69' },
422 ],
423 'Telnet' => [
ebd54ae9 424 "Telnet traffic",
857f62c8
DM		 425 { action => 'PARAM', proto => 'tcp', dport => '23' },
426 ],
427 'Telnets' => [
ebd54ae9 428 "Telnet over SSL",
857f62c8
DM		 429 { action => 'PARAM', proto => 'tcp', dport => '992' },
430 ],
431 'Time' => [
ebd54ae9 432 "RFC 868 Time protocol",
857f62c8
DM		 433 { action => 'PARAM', proto => 'tcp', dport => '37' },
434 ],
435 'Trcrt' => [
ebd54ae9 436 "Traceroute (for up to 30 hops) traffic",
857f62c8 437 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 438 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 439 ],
440 'VNC' => [
93be4333
DM		 441 "VNC traffic for VNC display's 0 - 99",
442 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
857f62c8
DM		 443 ],
444 'VNCL' => [
ebd54ae9 445 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 446 { action => 'PARAM', proto => 'tcp', dport => '5500' },
447 ],
448 'Web' => [
ebd54ae9 449 "WWW traffic (HTTP and HTTPS)",
857f62c8 450 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 451 { action => 'PARAM', proto => 'tcp', dport => '443' },
452 ],
857f62c8 453 'Webcache' => [
ebd54ae9 454 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 455 { action => 'PARAM', proto => 'tcp', dport => '8080' },
456 ],
457 'Webmin' => [
ebd54ae9 458 "Webmin traffic",
857f62c8
DM		 459 { action => 'PARAM', proto => 'tcp', dport => '10000' },
460 ],
461 'Whois' => [
ebd54ae9 462 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 463 { action => 'PARAM', proto => 'tcp', dport => '43' },
464 ],
961b4928
DM		 465};
466
467my $pve_fw_parsed_macros;
ebd54ae9 468my $pve_fw_macro_descr;
961b4928 469my $pve_fw_preferred_macro_names = {};
3a616aa0 470
d8f2505e
DM		 471my $pve_std_chains = {
472 'PVEFW-SET-ACCEPT-MARK' => [
473 "-j MARK --set-mark 1",
474 ],
79929d9c
DM		 475 'PVEFW-DropBroadcast' => [
476 # same as shorewall 'Broadcast'
477 # simply DROP BROADCAST/MULTICAST/ANYCAST
478 # we can use this to reduce logging
479 { action => 'DROP', dsttype => 'BROADCAST' },
480 { action => 'DROP', dsttype => 'MULTICAST' },
481 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 482 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 483 ],
484 'PVEFW-reject' => [
485 # same as shorewall 'reject'
486 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 487 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c
DM		 488 { action => 'DROP', proto => 'icmp' },
489 "-p tcp -j REJECT --reject-with tcp-reset",
490 "-p udp -j REJECT --reject-with icmp-port-unreachable",
491 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
492 "-j REJECT --reject-with icmp-host-prohibited",
493 ],
494 'PVEFW-Drop' => [
cbb5d6f3 495 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 496 # but REJECT/DROP some packages to reduce logging,
497 # and ACCEPT critical ICMP types
498 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
499 # we are not interested in BROADCAST/MULTICAST/ANYCAST
500 { action => 'PVEFW-DropBroadcast' },
501 # ACCEPT critical ICMP types
502 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
503 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
504 # Drop packets with INVALID state
505 "-m conntrack --ctstate INVALID -j DROP",
506 # Drop Microsoft SMB noise
507 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
508 { action => 'DROP', proto => 'udp', dport => '137:139'},
509 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
510 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
511 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
512 # Drop new/NotSyn traffic so that it doesn't get logged
513 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
514 # Drop DNS replies
515 { action => 'DROP', proto => 'udp', sport => 53 },
516 ],
517 'PVEFW-Reject' => [
cbb5d6f3 518 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 519 # but REJECT/DROP some packages to reduce logging,
520 # and ACCEPT critical ICMP types
521 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
522 # we are not interested in BROADCAST/MULTICAST/ANYCAST
523 { action => 'PVEFW-DropBroadcast' },
524 # ACCEPT critical ICMP types
525 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
526 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
527 # Drop packets with INVALID state
528 "-m conntrack --ctstate INVALID -j DROP",
529 # Drop Microsoft SMB noise
530 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
531 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
532 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
533 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
534 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
535 # Drop new/NotSyn traffic so that it doesn't get logged
536 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
537 # Drop DNS replies
538 { action => 'DROP', proto => 'udp', sport => 53 },
539 ],
d86659ef
DM		 540 'PVEFW-tcpflags' => [
541 # same as shorewall tcpflags action.
542 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
543 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
544 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
545 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
546 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
547 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
548 ],
bee633ab
DM		 549 'PVEFW-smurfs' => [
550 # same as shorewall smurfs action
551 # Filter packets for smurfs (packets with a broadcast address as the source).
552 "-s 0.0.0.0/32 -j RETURN",
553 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
554 "-s 224.0.0.0/4 -g PVEFW-smurflog",
555 ],
d8f2505e
DM		 556};
557
4b586518
DM		 558# iptables -p icmp -h
559my $icmp_type_names = {
560 any => 1,
561 'echo-reply' => 1,
562 'destination-unreachable' => 1,
563 'network-unreachable' => 1,
564 'host-unreachable' => 1,
565 'protocol-unreachable' => 1,
566 'port-unreachable' => 1,
567 'fragmentation-needed' => 1,
568 'source-route-failed' => 1,
569 'network-unknown' => 1,
570 'host-unknown' => 1,
571 'network-prohibited' => 1,
572 'host-prohibited' => 1,
573 'TOS-network-unreachable' => 1,
574 'TOS-host-unreachable' => 1,
575 'communication-prohibited' => 1,
576 'host-precedence-violation' => 1,
577 'precedence-cutoff' => 1,
578 'source-quench' => 1,
579 'redirect' => 1,
580 'network-redirect' => 1,
581 'host-redirect' => 1,
582 'TOS-network-redirect' => 1,
583 'TOS-host-redirect' => 1,
584 'echo-request' => 1,
585 'router-advertisement' => 1,
586 'router-solicitation' => 1,
587 'time-exceeded' => 1,
588 'ttl-zero-during-transit' => 1,
589 'ttl-zero-during-reassembly' => 1,
590 'parameter-problem' => 1,
591 'ip-header-bad' => 1,
592 'required-option-missing' => 1,
593 'timestamp-request' => 1,
594 'timestamp-reply' => 1,
595 'address-mask-request' => 1,
596 'address-mask-reply' => 1,
597};
598
54cd19a8 599sub init_firewall_macros {
6158271d 600
961b4928 601 $pve_fw_parsed_macros = {};
9aab3127 602
961b4928 603 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 604 my $lc_name = lc($k);
605 my $macro = $pve_fw_macros->{$k};
ebd54ae9
DM		 606 if (!ref($macro->[0])) {
607 $pve_fw_macro_descr->{$k} = shift @$macro;
608 }
e5076eee
DM		 609 $pve_fw_preferred_macro_names->{$lc_name} = $k;
610 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 611 }
9aab3127
DM		 612}
613
54cd19a8
DM		 614init_firewall_macros();
615
ebd54ae9
DM		 616sub get_macros {
617 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
618}
619
fcba0beb
DM		 620my $etc_services;
621
622sub get_etc_services {
623
624 return $etc_services if $etc_services;
625
626 my $filename = "/etc/services";
627
628 my $fh = IO::File->new($filename, O_RDONLY);
629 if (!$fh) {
630 warn "unable to read '$filename' - $!\n";
631 return {};
632 }
633
634 my $services = {};
635
636 while (my $line = <$fh>) {
637 chomp ($line);
638 next if $line =~m/^#/;
639 next if ($line =~m/^\s*$/);
640
641 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
642 $services->{byid}->{$2}->{name} = $1;
35b66e9d 643 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 644 $services->{byid}->{$2}->{$3} = 1;
645 $services->{byname}->{$1} = $services->{byid}->{$2};
646 }
647 }
648
649 close($fh);
650
6158271d
DM		 651 $etc_services = $services;
652
3a616aa0 653
fcba0beb
DM		 654 return $etc_services;
655}
656
657my $etc_protocols;
658
659sub get_etc_protocols {
660 return $etc_protocols if $etc_protocols;
661
662 my $filename = "/etc/protocols";
663
664 my $fh = IO::File->new($filename, O_RDONLY);
665 if (!$fh) {
666 warn "unable to read '$filename' - $!\n";
667 return {};
668 }
669
670 my $protocols = {};
671
672 while (my $line = <$fh>) {
673 chomp ($line);
674 next if $line =~m/^#/;
675 next if ($line =~m/^\s*$/);
676
677 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
678 $protocols->{byid}->{$2}->{name} = $1;
679 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
680 }
681 }
682
683 close($fh);
684
685 $etc_protocols = $protocols;
686
687 return $etc_protocols;
688}
689
525778d7 690my $ipv4_mask_hash_localnet = {
93be4333
DM		 691 '255.255.0.0' => 16,
692 '255.255.128.0' => 17,
693 '255.255.192.0' => 18,
694 '255.255.224.0' => 19,
695 '255.255.240.0' => 20,
696 '255.255.248.0' => 21,
697 '255.255.252.0' => 22,
698 '255.255.254.0' => 23,
699 '255.255.255.0' => 24,
700 '255.255.255.128' => 25,
701 '255.255.255.192' => 26,
702 '255.255.255.224' => 27,
703 '255.255.255.240' => 28,
704 '255.255.255.248' => 29,
705 '255.255.255.252' => 30,
706};
707
525778d7 708my $__local_network;
93be4333 709
525778d7 710sub local_network {
ac633d30 711 my ($new_value) = @_;
93be4333 712
525778d7 713 $__local_network = $new_value if defined($new_value);
ac633d30 714
525778d7 715 return $__local_network if defined($__local_network);
93be4333
DM		 716
717 eval {
718 my $nodename = PVE::INotify::nodename();
719
720 my $ip = PVE::Cluster::remote_node_ip($nodename);
721
722 my $testip = Net::IP->new($ip);
723
724 my $routes = PVE::ProcFSTools::read_proc_net_route();
725 foreach my $entry (@$routes) {
525778d7 726 my $mask = $ipv4_mask_hash_localnet->{$entry->{mask}};
93be4333
DM		 727 next if !defined($mask);
728 return if $mask eq '0.0.0.0';
729 my $cidr = "$entry->{dest}/$mask";
730 my $testnet = Net::IP->new($cidr);
731 if ($testnet->overlaps($testip)) {
525778d7 732 $__local_network = $cidr;
93be4333
DM		 733 return;
734 }
735 }
736 };
737 warn $@ if $@;
738
525778d7 739 return $__local_network;
93be4333
DM		 740}
741
ecbea048
DM		 742sub parse_address_list {
743 my ($str) = @_;
744
28311400 745 return if $str =~ m/^(\+)(\S+)$/; # ipset ref
44be8ceb 746 return if $str =~ m/^${ip_alias_pattern}$/;
d72beb8e 747
3162af6b
DM		 748 my $count = 0;
749 my $iprange = 0;
750 foreach my $elem (split(/,/, $str)) {
751 $count++;
752 if (!Net::IP->new($elem)) {
ecbea048
DM		 753 my $err = Net::IP::Error();
754 die "invalid IP address: $err\n";
755 }
3162af6b 756 $iprange = 1 if $elem =~ m/-/;
ecbea048 757 }
e34d0e58 758
3162af6b 759 die "you can use a range in a list\n" if $iprange && $count > 1;
ecbea048 760}
dddd9413 761
fcba0beb
DM		 762sub parse_port_name_number_or_range {
763 my ($str) = @_;
764
765 my $services = PVE::Firewall::get_etc_services();
7ca36671 766 my $count = 0;
041b7e8e
DM		 767 my $icmp_port = 0;
768
fcba0beb 769 foreach my $item (split(/,/, $str)) {
7ca36671
DM		 770 $count++;
771 if ($item =~ m/^(\d+):(\d+)$/) {
772 my ($port1, $port2) = ($1, $2);
773 die "invalid port '$port1'\n" if $port1 > 65535;
774 die "invalid port '$port2'\n" if $port2 > 65535;
775 } elsif ($item =~ m/^(\d+)$/) {
776 my $port = $1;
777 die "invalid port '$port'\n" if $port > 65535;
778 } else {
041b7e8e
DM		 779 if ($icmp_type_names->{$item}) {
780 $icmp_port = 1;
781 } else {
e34d0e58 782 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 783 }
fcba0beb
DM		 784 }
785 }
786
041b7e8e
DM		 787 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
788
7ca36671 789 return $count;
fcba0beb
DM		 790}
791
54cd19a8
DM		 792PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
793sub pve_fw_verify_port_spec {
794 my ($portstr) = @_;
795
7ca36671 796 parse_port_name_number_or_range($portstr);
54cd19a8
DM		 797
798 return $portstr;
799}
800
801PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec);
802sub pve_fw_verify_v4addr_spec {
803 my ($list) = @_;
804
805 parse_address_list($list);
806
807 return $list;
808}
809
810PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
811sub pve_fw_verify_protocol_spec {
812 my ($proto) = @_;
813
814 my $protocols = get_etc_protocols();
815
816 die "unknown protocol '$proto'\n" if $proto &&
817 !(defined($protocols->{byname}->{$proto}) ||
818 defined($protocols->{byid}->{$proto}));
819
820 return $proto;
821}
822
823
d1c53b3e 824# helper function for API
d1c53b3e 825
5d38d64f
DM		 826sub copy_opject_with_digest {
827 my ($object) = @_;
828
829 my $sha = Digest::SHA->new('sha1');
830
831 my $res = {};
832 foreach my $k (sort keys %$object) {
833 my $v = $object->{$k};
0365eb68 834 next if !defined($v);
5d38d64f
DM		 835 $res->{$k} = $v;
836 $sha->add($k, ':', $v, "\n");
837 }
838
55e686c7 839 my $digest = $sha->hexdigest;
5d38d64f
DM		 840
841 $res->{digest} = $digest;
842
843 return wantarray ? ($res, $digest) : $res;
844}
845
846sub copy_list_with_digest {
847 my ($list) = @_;
848
849 my $sha = Digest::SHA->new('sha1');
850
851 my $res = [];
852 foreach my $entry (@$list) {
853 my $data = {};
854 foreach my $k (sort keys %$entry) {
855 my $v = $entry->{$k};
0365eb68 856 next if !defined($v);
5d38d64f
DM		 857 $data->{$k} = $v;
858 $sha->add($k, ':', $v, "\n");
859 }
860 push @$res, $data;
861 }
862
55e686c7 863 my $digest = $sha->hexdigest;
5d38d64f
DM		 864
865 foreach my $entry (@$res) {
866 $entry->{digest} = $digest;
867 }
868
869 return wantarray ? ($res, $digest) : $res;
870}
871
9c7e0858
DM		 872my $rule_properties = {
873 pos => {
874 description => "Update rule at position <pos>.",
875 type => 'integer',
876 minimum => 0,
877 optional => 1,
878 },
c71e785f 879 digest => get_standard_option('pve-config-digest'),
9c7e0858
DM		 880 type => {
881 type => 'string',
882 optional => 1,
883 enum => ['in', 'out', 'group'],
884 },
885 action => {
c14dacdf 886 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 887 type => 'string',
888 optional => 1,
44be8ceb 889 pattern => $security_group_name_pattern,
c14dacdf
DM		 890 maxLength => 20,
891 minLength => 2,
9c7e0858 892 },
e5076eee
DM		 893 macro => {
894 type => 'string',
895 optional => 1,
54cd19a8 896 maxLength => 128,
e5076eee 897 },
54cd19a8 898 iface => get_standard_option('pve-iface', { optional => 1 }),
9c7e0858 899 source => {
54cd19a8 900 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 901 optional => 1,
902 },
903 dest => {
54cd19a8 904 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 905 optional => 1,
906 },
907 proto => {
54cd19a8 908 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 909 optional => 1,
910 },
911 enable => {
912 type => 'boolean',
913 optional => 1,
914 },
915 sport => {
54cd19a8 916 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 917 optional => 1,
918 },
919 dport => {
54cd19a8 920 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 921 optional => 1,
922 },
923 comment => {
924 type => 'string',
925 optional => 1,
926 },
927};
928
929sub add_rule_properties {
930 my ($properties) = @_;
931
932 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 933 my $h = $rule_properties->{$k};
934 # copy data, so that we can modify later without side effects
935 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 936 }
cbb5d6f3 937
9c7e0858
DM		 938 return $properties;
939}
940
5b7974df
DM		 941sub delete_rule_properties {
942 my ($rule, $delete_str) = @_;
e34d0e58 943
5b7974df
DM		 944 foreach my $opt (PVE::Tools::split_list($delete_str)) {
945 raise_param_exc({ 'delete' => "no such property ('$opt')"})
946 if !defined($rule_properties->{$opt});
947 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
948 if $opt eq 'type' || $opt eq 'action';
949 delete $rule->{$opt};
950 }
951
952 return $rule;
953}
954
9a2745a0
DM		 955my $apply_macro = sub {
956 my ($macro_name, $param, $verify) = @_;
957
958 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
959 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
960
961 my $rules = [];
962
963 foreach my $templ (@$macro_rules) {
964 my $rule = {};
965 my $param_used = {};
966 foreach my $k (keys %$templ) {
967 my $v = $templ->{$k};
968 if ($v eq 'PARAM') {
969 $v = $param->{$k};
970 $param_used->{$k} = 1;
971 } elsif ($v eq 'DEST') {
972 $v = $param->{dest};
973 $param_used->{dest} = 1;
974 } elsif ($v eq 'SOURCE') {
975 $v = $param->{source};
976 $param_used->{source} = 1;
977 }
978
979 if (!defined($v)) {
980 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 981 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 982 die "$msg\n";
983 }
984 $rule->{$k} = $v;
985 }
986 foreach my $k (keys %$param) {
987 next if $k eq 'macro';
988 next if !defined($param->{$k});
989 next if $param_used->{$k};
990 if (defined($rule->{$k})) {
991 if ($rule->{$k} ne $param->{$k}) {
992 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 993 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 994 die "$msg\n";
995 }
996 } else {
997 $rule->{$k} = $param->{$k};
998 }
999 }
1000 push @$rules, $rule;
1001 }
1002
1003 return $rules;
1004};
1005
7ca36671
DM		 1006sub verify_rule {
1007 my ($rule, $allow_groups) = @_;
1008
1009 my $type = $rule->{type};
1010
1011 raise_param_exc({ type => "missing property"}) if !$type;
1012 raise_param_exc({ action => "missing property"}) if !$rule->{action};
e34d0e58 1013
7ca36671
DM		 1014 if ($type eq 'in' || $type eq 'out') {
1015 raise_param_exc({ action => "unknown action '$rule->{action}'"})
1016 if $rule->{action} !~ m/^(ACCEPT|DROP|REJECT)$/;
1017 } elsif ($type eq 'group') {
e34d0e58 1018 raise_param_exc({ type => "security groups not allowed"})
7ca36671 1019 if !$allow_groups;
e34d0e58 1020 raise_param_exc({ action => "invalid characters in security group name"})
44be8ceb 1021 if $rule->{action} !~ m/^${security_group_name_pattern}$/;
7ca36671
DM		 1022 } else {
1023 raise_param_exc({ type => "unknown rule type '$type'"});
1024 }
e34d0e58 1025
dba740a9
DM		 1026 if ($rule->{iface}) {
1027 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
1028 raise_param_exc({ iface => $@ }) if $@;
1029 }
7ca36671
DM		 1030
1031 if ($rule->{macro}) {
1032 my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})};
1033 raise_param_exc({ macro => "unknown macro '$rule->{macro}'"}) if !$preferred_name;
1034 $rule->{macro} = $preferred_name;
1035 }
1036
1037 if ($rule->{dport}) {
1038 eval { parse_port_name_number_or_range($rule->{dport}); };
1039 raise_param_exc({ dport => $@ }) if $@;
1040 }
1041
1042 if ($rule->{sport}) {
1043 eval { parse_port_name_number_or_range($rule->{sport}); };
1044 raise_param_exc({ sport => $@ }) if $@;
1045 }
1046
1047 if ($rule->{source}) {
1048 eval { parse_address_list($rule->{source}); };
1049 raise_param_exc({ source => $@ }) if $@;
1050 }
1051
1052 if ($rule->{dest}) {
1053 eval { parse_address_list($rule->{dest}); };
1054 raise_param_exc({ dest => $@ }) if $@;
1055 }
1056
9a2745a0
DM		 1057 if ($rule->{macro}) {
1058 &$apply_macro($rule->{macro}, $rule, 1);
1059 }
1060
7ca36671
DM		 1061 return $rule;
1062}
1063
9c7e0858
DM		 1064sub copy_rule_data {
1065 my ($rule, $param) = @_;
1066
1067 foreach my $k (keys %$rule_properties) {
1068 if (defined(my $v = $param->{$k})) {
1069 if ($v eq '' || $v eq '-') {
1070 delete $rule->{$k};
1071 } else {
1072 $rule->{$k} = $v;
1073 }
1074 } else {
1075 delete $rule->{$k};
1076 }
1077 }
7ca36671
DM		 1078
1079 # verify rule now
1080
9c7e0858
DM		 1081 return $rule;
1082}
1083
1084# core functions
780bcc0f
DM		 1085my $bridge_firewall_enabled = 0;
1086
1087sub enable_bridge_firewall {
1088
1089 return if $bridge_firewall_enabled; # only once
1090
5f0a912c
DM		 1091 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1092 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1093
6a8a75db
DM		 1094 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1095 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1096
780bcc0f
DM		 1097 $bridge_firewall_enabled = 1;
1098}
1099
8cebfa6f 1100my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 1101
b16e818e
DM		 1102sub iptables_restore_cmdlist {
1103 my ($cmdlist) = @_;
3a616aa0 1104
3fa83edf 1105 run_command("/sbin/iptables-restore -n", input => $cmdlist);
3a616aa0
AD		 1106}
1107
34cdedfa
AD		 1108sub ipset_restore_cmdlist {
1109 my ($cmdlist) = @_;
1110
dd7a13fd 1111 run_command("/usr/sbin/ipset restore", input => $cmdlist);
34cdedfa
AD		 1112}
1113
de2a57cd
DM		 1114sub iptables_get_chains {
1115
1116 my $res = {};
1117
1118 # check what chains we want to track
1119 my $is_pvefw_chain = sub {
1120 my $name = shift;
1121
dec84fcd
DM		 1122 return 1 if $name =~ m/^PVEFW-\S+$/;
1123
de2a57cd 1124 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 1125
1126 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1127
9e15114a
DM		 1128 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1129
a01c32c7 1130 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
f50656c2 1131 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 1132
1133 return undef;
1134 };
1135
1136 my $table = '';
1137
c4a2e5ae
DM		 1138 my $hooks = {};
1139
de2a57cd
DM		 1140 my $parser = sub {
1141 my $line = shift;
1142
1143 return if $line =~ m/^#/;
1144 return if $line =~ m/^\s*$/;
1145
1146 if ($line =~ m/^\*(\S+)$/) {
1147 $table = $1;
1148 return;
1149 }
1150
1151 return if $table ne 'filter';
1152
1153 if ($line =~ m/^:(\S+)\s/) {
1154 my $chain = $1;
1155 return if !&$is_pvefw_chain($chain);
3fa83edf 1156 $res->{$chain} = "unknown";
09d5f68e 1157 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1158 my ($chain, $sig) = ($1, $2);
de2a57cd 1159 return if !&$is_pvefw_chain($chain);
3fa83edf 1160 $res->{$chain} = $sig;
c4a2e5ae
DM		 1161 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1162 $hooks->{$1} = 1;
de2a57cd
DM		 1163 } else {
1164 # simply ignore the rest
1165 return;
1166 }
1167 };
1168
1169 run_command("/sbin/iptables-save", outfunc => $parser);
1170
c4a2e5ae 1171 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1172}
1173
9bf7d929
DM		 1174sub iptables_chain_digest {
1175 my ($rules) = @_;
1176 my $digest = Digest::SHA->new('sha1');
1177 foreach my $rule (@$rules) { # order is important
1178 $digest->add($rule);
1179 }
1180 return $digest->b64digest;
1181}
1182
3f95d14a
DM		 1183sub ipset_chain_digest {
1184 my ($rules) = @_;
4bd0a9c4 1185
3f95d14a
DM		 1186 my $digest = Digest::SHA->new('sha1');
1187 foreach my $rule (sort @$rules) { # note: sorted
1188 $digest->add($rule);
1189 }
1190 return $digest->b64digest;
1191}
1192
34cdedfa
AD		 1193sub ipset_get_chains {
1194
1195 my $res = {};
1196 my $chains = {};
1197
1198 my $parser = sub {
1199 my $line = shift;
1200
1201 return if $line =~ m/^#/;
1202 return if $line =~ m/^\s*$/;
4b96e877 1203 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1204 my $chain = $1;
1205 $line =~ s/\s+$//; # delete trailing white space
1206 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1207 } else {
1208 # simply ignore the rest
1209 return;
1210 }
1211 };
1212
3f95d14a 1213 run_command("/usr/sbin/ipset save", outfunc => $parser);
34cdedfa 1214
3f95d14a
DM		 1215 # compute digest for each chain
1216 foreach my $chain (keys %$chains) {
1217 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1218 }
1219
1220 return $res;
1221}
1222
eba0fb64 1223sub ruleset_generate_cmdstr {
ba791b1f 1224 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
3a616aa0 1225
00bb4391 1226 return if defined($rule->{enable}) && !$rule->{enable};
11bac5c2 1227
e5076eee
DM		 1228 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1229
1230 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
1231 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
e5076eee 1232
41524a58 1233 my @cmd = ();
3a616aa0 1234
eba0fb64
DM		 1235 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1236 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1237
ba791b1f
AD		 1238 my $source = $rule->{source};
1239 my $dest = $rule->{dest};
1240
cbb5d6f3 1241 if ($source) {
44be8ceb
DM		 1242 if ($source =~ m/^\+/) {
1243 if ($source =~ m/^\+(${security_group_name_pattern})$/) {
1244 die "no such ipset '$1'\n" if !$cluster_conf->{ipset}->{$1};
1245 push @cmd, "-m set --match-set PVEFW-$1 src";
1246 } else {
1247 die "invalid security group name '$source'\n";
1248 }
1249 } elsif ($source =~ m/^${ip_alias_pattern}$/){
81d574a7
DM		 1250 my $alias = lc($source);
1251 my $e = $cluster_conf->{aliases}->{$alias};
1252 die "no such alias $source\n" if !$e;
1253 push @cmd, "-s $e->{cidr}";
ac8242cc 1254 } elsif ($source =~ m/\-/){
ba791b1f
AD		 1255 push @cmd, "-m iprange --src-range $source";
1256
cbb5d6f3 1257 } else {
ba791b1f
AD		 1258 push @cmd, "-s $source";
1259 }
1260 }
1261
cbb5d6f3 1262 if ($dest) {
44be8ceb
DM		 1263 if ($dest =~ m/^\+/) {
1264 if ($dest =~ m/^\+(${security_group_name_pattern})$/) {
1265 die "no such ipset '$1'\n" if !$cluster_conf->{ipset}->{$1};
1266 push @cmd, "-m set --match-set PVEFW-$1 dst";
1267 } else {
1268 die "invalid security group name '$dest'\n";
1269 }
1270 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
51b40846 1271 my $alias = lc($dest);
81d574a7
DM		 1272 my $e = $cluster_conf->{aliases}->{$alias};
1273 die "no such alias $dest" if !$e;
1274 push @cmd, "-d $e->{cidr}";
cbb5d6f3 1275 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
ba791b1f
AD		 1276 push @cmd, "-m iprange --dst-range $dest";
1277
cbb5d6f3 1278 } else {
d6d2a385 1279 push @cmd, "-d $dest";
ba791b1f
AD		 1280 }
1281 }
4b586518 1282
181390b0 1283 if ($rule->{proto}) {
41524a58 1284 push @cmd, "-p $rule->{proto}";
e3a1d391 1285
181390b0 1286 my $multiport = 0;
e5076eee
DM		 1287 $multiport++ if $nbdport > 1;
1288 $multiport++ if $nbsport > 1;
e3a1d391 1289
41524a58 1290 push @cmd, "--match multiport" if $multiport;
4b586518 1291
cbb5d6f3 1292 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1293 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1294
1295 if ($rule->{dport}) {
1296 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
1297 # Note: we use dport to store --icmp-type
1298 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 1299 push @cmd, "-m icmp --icmp-type $rule->{dport}";
181390b0 1300 } else {
e5076eee 1301 if ($nbdport > 1) {
181390b0 1302 if ($multiport == 2) {
41524a58 1303 push @cmd, "--ports $rule->{dport}";
181390b0 1304 } else {
41524a58 1305 push @cmd, "--dports $rule->{dport}";
181390b0 1306 }
e3a1d391 1307 } else {
41524a58 1308 push @cmd, "--dport $rule->{dport}";
e3a1d391 1309 }
4b586518
DM		 1310 }
1311 }
4b586518 1312
181390b0 1313 if ($rule->{sport}) {
e5076eee 1314 if ($nbsport > 1) {
41524a58 1315 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 1316 } else {
41524a58 1317 push @cmd, "--sport $rule->{sport}";
181390b0 1318 }
4b586518 1319 }
181390b0 1320 } elsif ($rule->{dport} || $rule->{sport}) {
93d96f83
DM		 1321 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
1322 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
4b586518
DM		 1323 }
1324
41524a58 1325 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 1326
1327 if (my $action = $rule->{action}) {
cbb5d6f3 1328 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 1329 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 1330 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 1331 }
3a616aa0 1332
eba0fb64
DM		 1333 return scalar(@cmd) ? join(' ', @cmd) : undef;
1334}
1335
1336sub ruleset_generate_rule {
ba791b1f 1337 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
eba0fb64 1338
e5076eee
DM		 1339 my $rules;
1340
1341 if ($rule->{macro}) {
1342 $rules = &$apply_macro($rule->{macro}, $rule);
1343 } else {
1344 $rules = [ $rule ];
1345 }
1346
d4091b82
DM		 1347 # update all or nothing
1348
1349 my @cmds = ();
cbb5d6f3 1350 foreach my $tmp (@$rules) {
ba791b1f 1351 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) {
d4091b82 1352 push @cmds, $cmdstr;
e5076eee 1353 }
41524a58 1354 }
d4091b82
DM		 1355
1356 foreach my $cmdstr (@cmds) {
1357 ruleset_addrule($ruleset, $chain, $cmdstr);
1358 }
3fa83edf 1359}
0f168d7b 1360
eba0fb64
DM		 1361sub ruleset_generate_rule_insert {
1362 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1363
e5076eee
DM		 1364 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1365
eba0fb64
DM		 1366 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
1367 ruleset_insertrule($ruleset, $chain, $cmdstr);
1368 }
1369}
3fa83edf
DM		 1370
1371sub ruleset_create_chain {
1372 my ($ruleset, $chain) = @_;
3a616aa0 1373
d050c724 1374 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1375 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1376
3fa83edf
DM		 1377 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1378
1379 $ruleset->{$chain} = [];
3a616aa0
AD		 1380}
1381
3fa83edf
DM		 1382sub ruleset_chain_exist {
1383 my ($ruleset, $chain) = @_;
3a616aa0 1384
3fa83edf
DM		 1385 return $ruleset->{$chain} ? 1 : undef;
1386}
3a616aa0 1387
3fa83edf
DM		 1388sub ruleset_addrule {
1389 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1390
3fa83edf 1391 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1392
3fa83edf
DM		 1393 push @{$ruleset->{$chain}}, "-A $chain $rule";
1394}
3a616aa0 1395
3fa83edf
DM		 1396sub ruleset_insertrule {
1397 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1398
3fa83edf 1399 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1400
3fa83edf
DM		 1401 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1402}
3a616aa0 1403
782c4cde
DM		 1404sub get_log_rule_base {
1405 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1406
782c4cde
DM		 1407 die "internal error - no log level" if !defined($loglevel);
1408
1409 $vmid = 0 if !defined($vmid);
1410
cbb5d6f3 1411 # Note: we use special format for prefix to pass further
782c4cde
DM		 1412 # info to log daemon (VMID, LOGVELEL and CHAIN)
1413
1414 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1415}
1416
1417sub ruleset_addlog {
1418 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1419
1420 return if !defined($loglevel);
1421
1422 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1423
1424 $logrule = "$rule $logrule" if defined($rule);
1425
88733a74 1426 ruleset_addrule($ruleset, $chain, $logrule);
782c4cde
DM		 1427}
1428
ead850e8 1429sub ruleset_add_chain_policy {
782c4cde 1430 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1431
1432 if ($policy eq 'ACCEPT') {
1433
1434 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1435 { ACCEPT => $accept_action});
1436
1437 } elsif ($policy eq 'DROP') {
1438
1439 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1440
782c4cde 1441 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1442
1443 ruleset_addrule($ruleset, $chain, "-j DROP");
1444 } elsif ($policy eq 'REJECT') {
1445 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1446
782c4cde 1447 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1448
1449 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1450 } else {
1451 # should not happen
1452 die "internal error: unknown policy '$policy'";
1453 }
1454}
1455
e2943485
DM		 1456sub ruleset_chain_add_conn_filters {
1457 my ($ruleset, $chain, $accept) = @_;
1458
1459 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1460 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1461}
1462
1463sub ruleset_chain_add_input_filters {
2428e394
AD		 1464 my ($ruleset, $chain, $options, $cluster_conf, $loglevel) = @_;
1465
1466 if ($cluster_conf->{ipset}->{blacklist}){
1467 ruleset_addlog($ruleset, $chain, 0, "DROP: ", $loglevel, "-m set --match-set PVEFW-blacklist src");
1468 ruleset_addrule($ruleset, $chain, "-m set --match-set PVEFW-blacklist src -j DROP");
1469 }
e2943485
DM		 1470
1471 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1472 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1473 }
1474
1475 if ($options->{tcpflags}) {
1476 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1477 }
1478}
1479
9e15114a 1480sub ruleset_create_vm_chain {
58638f2c 1481 my ($ruleset, $chain, $options, $macaddr, $direction) = @_;
3a616aa0 1482
9e15114a 1483 ruleset_create_chain($ruleset, $chain);
b47ecc88 1484 my $accept = generate_nfqueue($options);
3a616aa0 1485
ce15d90b 1486 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1487 if ($direction eq 'OUT') {
cbb5d6f3 1488 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
0f168d7b 1489 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1490 } else {
cbb5d6f3 1491 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
0f168d7b 1492 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1493 }
ce15d90b
DM		 1494 }
1495
b21aca2c
DM		 1496 if ($direction eq 'OUT') {
1497 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1498 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1499 }
9e15114a 1500 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1501 }
9e15114a
DM		 1502}
1503
4bc6b5ac
DM		 1504sub ruleset_add_group_rule {
1505 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action) = @_;
1506
1507 my $group = $rule->{action};
1508 my $group_chain = "GROUP-$group-$direction";
1509 if(!ruleset_chain_exist($ruleset, $group_chain)){
1510 generate_group_rules($ruleset, $cluster_conf, $group);
1511 }
f8b12fff
DM		 1512
1513 if ($direction eq 'OUT' && $rule->{iface_out}) {
1514 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out} -j $group_chain");
1515 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1516 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in} -j $group_chain");
4bc6b5ac
DM		 1517 } else {
1518 ruleset_addrule($ruleset, $chain, "-j $group_chain");
1519 }
1520
1521 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $action");
1522}
1523
9e15114a 1524sub ruleset_generate_vm_rules {
fca39c2c 1525 my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_;
9e15114a
DM		 1526
1527 my $lc_direction = lc($direction);
c29f55c9 1528
6b8ca015
DM		 1529 my $in_accept = generate_nfqueue($options);
1530
92e976b3
DM		 1531 foreach my $rule (@$rules) {
1532 next if $rule->{iface} && $rule->{iface} ne $netid;
ea9e5116 1533 next if !$rule->{enable};
92e976b3 1534 if ($rule->{type} eq 'group') {
4bc6b5ac
DM		 1535 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
1536 $direction eq 'OUT' ? 'RETURN' : $in_accept);
92e976b3
DM		 1537 } else {
1538 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 1539 eval {
1540 if ($direction eq 'OUT') {
1541 ruleset_generate_rule($ruleset, $chain, $rule,
e34d0e58 1542 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
921dfb33
DM		 1543 undef, $cluster_conf);
1544 } else {
e34d0e58
DM		 1545 ruleset_generate_rule($ruleset, $chain, $rule,
1546 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
921dfb33
DM		 1547 undef, $cluster_conf);
1548 }
1549 };
1550 warn $@ if $@;
4e6112f9 1551 }
3a616aa0 1552 }
9e15114a
DM		 1553}
1554
b47ecc88
AD		 1555sub generate_nfqueue {
1556 my ($options) = @_;
1557
73089769
DM		 1558 if ($options->{ips}) {
1559 my $action = "NFQUEUE";
1560 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1561 if (defined($3) && defined($1)) {
b47ecc88 1562 $action .= " --queue-balance $1:$3";
73089769 1563 } elsif (defined($1)) {
b47ecc88
AD		 1564 $action .= " --queue-num $1";
1565 }
1566 }
8dc92812 1567 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 1568 return $action;
1569 } else {
1570 return "ACCEPT";
b47ecc88 1571 }
b47ecc88
AD		 1572}
1573
da6fc60b 1574sub ruleset_generate_vm_ipsrules {
a01c32c7 1575 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 1576
1577 if ($options->{ips} && $direction eq 'IN') {
1578 my $nfqueue = generate_nfqueue($options);
1579
a01c32c7 1580 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 1581 ruleset_create_chain($ruleset, "PVEFW-IPS");
1582 }
1583
a01c32c7 1584 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
da6fc60b
AD		 1585 }
1586}
1587
9e15114a 1588sub generate_venet_rules_direction {
58638f2c 1589 my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
9e15114a 1590
9e15114a
DM		 1591 my $lc_direction = lc($direction);
1592
1593 my $rules = $vmfw_conf->{rules};
1594
1595 my $options = $vmfw_conf->{options};
1596 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1597
1598 my $chain = "venet0-$vmid-$direction";
1599
58638f2c 1600 ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction);
9e15114a 1601
fca39c2c 1602 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction);
9e15114a
DM		 1603
1604 # implement policy
1605 my $policy;
1606
1607 if ($direction eq 'OUT') {
1608 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1609 } else {
1610 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1611 }
1612
b47ecc88
AD		 1613 my $accept = generate_nfqueue($options);
1614 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1615 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1616
eba0fb64 1617 if ($direction eq 'OUT') {
41389aed 1618 ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", {
eba0fb64
DM		 1619 action => $chain,
1620 source => $ip,
1621 iface_in => 'venet0'});
1622 } else {
41389aed 1623 ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", {
eba0fb64
DM		 1624 action => $chain,
1625 dest => $ip,
1626 iface_out => 'venet0'});
1627 }
9e15114a
DM		 1628}
1629
1630sub generate_tap_rules_direction {
58638f2c 1631 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction) = @_;
9e15114a
DM		 1632
1633 my $lc_direction = lc($direction);
1634
1635 my $rules = $vmfw_conf->{rules};
1636
1637 my $options = $vmfw_conf->{options};
1638 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1639
1640 my $tapchain = "$iface-$direction";
1641
58638f2c 1642 ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction);
9e15114a 1643
fca39c2c 1644 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options);
3a616aa0 1645
a01c32c7 1646 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 1647
ccae0b50
DM		 1648 # implement policy
1649 my $policy;
1650
1651 if ($direction eq 'OUT') {
72f63fde 1652 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
ccae0b50 1653 } else {
72f63fde 1654 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
ccae0b50
DM		 1655 }
1656
b47ecc88
AD		 1657 my $accept = generate_nfqueue($options);
1658 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1659 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
3a616aa0 1660
3fa83edf 1661 # plug the tap chain to bridge chain
3cc81077 1662 if ($direction eq 'IN') {
a01c32c7
DM		 1663 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
1664 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
3cc81077 1665 } else {
a01c32c7
DM		 1666 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
1667 "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain");
3cc81077 1668 }
3a616aa0
AD		 1669}
1670
d18c1e2b 1671sub enable_host_firewall {
fca39c2c 1672 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
0bd5f137 1673
92e976b3 1674 my $options = $hostfw_conf->{options};
63324b09 1675 my $cluster_options = $cluster_conf->{options};
92e976b3 1676 my $rules = $hostfw_conf->{rules};
35f0c37e 1677 my $cluster_rules = $cluster_conf->{rules};
178a63be 1678
3fa83edf 1679 # host inbound firewall
dec84fcd
DM		 1680 my $chain = "PVEFW-HOST-IN";
1681 ruleset_create_chain($ruleset, $chain);
0bd5f137 1682
178a63be
DM		 1683 my $loglevel = get_option_log_level($options, "log_level_in");
1684
e2943485 1685 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
4ac863a6 1686
e2943485 1687 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2428e394 1688 ruleset_chain_add_input_filters($ruleset, $chain, $options, $cluster_conf, $loglevel);
fb424a00 1689
23e888f8
DM		 1690 # we use RETURN because we need to check also tap rules
1691 my $accept_action = 'RETURN';
1692
cc8dc02f
DM		 1693 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1694
35f0c37e
DM		 1695 # add host rules first, so that cluster wide rules can be overwritten
1696 foreach my $rule (@$rules, @$cluster_rules) {
f8b12fff 1697 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
4bc6b5ac
DM		 1698 if ($rule->{type} eq 'group') {
1699 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action);
1700 } elsif ($rule->{type} eq 'in') {
4bc6b5ac
DM		 1701 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
1702 undef, $cluster_conf);
4bc6b5ac 1703 }
f8b12fff 1704 delete $rule->{iface_in};
0bd5f137 1705 }
eb399cef
DM		 1706
1707 # allow standard traffic for management ipset (includes cluster network)
1708 my $mngmntsrc = "-m set --match-set PVEFW-management src";
1709 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API
1710 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
1711 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
1712 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22 -j $accept_action"); # SSH
3bc79f87 1713
525778d7 1714 my $localnet = local_network();
3bc79f87 1715
eb399cef 1716 # corosync
525778d7 1717 if ($localnet) {
c5191f57 1718 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7
DM		 1719 ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule");
1720 ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87 1721 }
0bd5f137 1722
23e888f8 1723 # implement input policy
63324b09 1724 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1725 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1726
3fa83edf 1727 # host outbound firewall
aadd745e 1728 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1729 ruleset_create_chain($ruleset, $chain);
1730
178a63be
DM		 1731 $loglevel = get_option_log_level($options, "log_level_out");
1732
dec84fcd 1733 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
e2943485
DM		 1734
1735 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
1736
23e888f8
DM		 1737 # we use RETURN because we may want to check other thigs later
1738 $accept_action = 'RETURN';
1739
cc8dc02f
DM		 1740 ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
1741
35f0c37e
DM		 1742 # add host rules first, so that cluster wide rules can be overwritten
1743 foreach my $rule (@$rules, @$cluster_rules) {
f8b12fff 1744 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
4bc6b5ac
DM		 1745 if ($rule->{type} eq 'group') {
1746 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action);
1747 } elsif ($rule->{type} eq 'out') {
4bc6b5ac
DM		 1748 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
1749 undef, $cluster_conf);
4bc6b5ac 1750 }
f8b12fff 1751 delete $rule->{iface_out};
0bd5f137
AD		 1752 }
1753
3bc79f87 1754 # allow standard traffic on cluster network
525778d7
DM		 1755 if ($localnet) {
1756 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006 -j $accept_action"); # PVE API
1757 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22 -j $accept_action"); # SSH
1758 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console
1759 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy
3bc79f87 1760
c5191f57 1761 my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
525778d7 1762 ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule");
f573ae2c 1763 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule");
3bc79f87
DM		 1764 }
1765
23e888f8 1766 # implement output policy
63324b09 1767 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 1768 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 1769
dec84fcd
DM		 1770 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
1771 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 1772}
1773
1774sub generate_group_rules {
fca39c2c 1775 my ($ruleset, $cluster_conf, $group) = @_;
9d31b418 1776
c6f5cc88 1777 my $rules = $cluster_conf->{groups}->{$group};
6158271d 1778
b4deedab
DM		 1779 if (!$rules) {
1780 warn "no such security group '$group'\n";
1781 $rules = []; # create empty chain
1782 }
1783
3fa83edf 1784 my $chain = "GROUP-${group}-IN";
9d31b418 1785
3fa83edf 1786 ruleset_create_chain($ruleset, $chain);
b47ecc88 1787 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1788
92e976b3
DM		 1789 foreach my $rule (@$rules) {
1790 next if $rule->{type} ne 'in';
ba791b1f 1791 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418
AD		 1792 }
1793
3fa83edf 1794 $chain = "GROUP-${group}-OUT";
9d31b418 1795
3fa83edf 1796 ruleset_create_chain($ruleset, $chain);
4e6112f9 1797 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1798
92e976b3
DM		 1799 foreach my $rule (@$rules) {
1800 next if $rule->{type} ne 'out';
1801 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1802 # check also other tap rules later
cbb5d6f3 1803 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 1804 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418 1805 }
9d31b418
AD		 1806}
1807
51bae274
DM		 1808my $MAX_NETS = 32;
1809my $valid_netdev_names = {};
1810for (my $i = 0; $i < $MAX_NETS; $i++) {
1811 $valid_netdev_names->{"net$i"} = 1;
1812}
5e1267a5 1813
51bae274 1814sub parse_fw_rule {
dba740a9 1815 my ($line, $allow_iface, $allow_groups) = @_;
5e1267a5 1816
dba740a9
DM		 1817 my ($type, $action, $macro, $iface, $source, $dest, $proto, $dport, $sport);
1818
1819 chomp $line;
51bae274 1820
11bac5c2 1821 # we can add single line comments to the end of the rule
30c1ae52 1822 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
11bac5c2
DM		 1823
1824 # we can disable a rule when prefixed with '|'
ea9e5116
DM		 1825 my $enable = 1;
1826
1827 $enable = 0 if $line =~ s/^\|//;
51bae274 1828
dba740a9
DM		 1829 $line =~ s/^(\S+)\s+(\S+)\s*// ||
1830 die "unable to parse rule: $line\n";
1831
1832 $type = lc($1);
1833 $action = $2;
92e976b3
DM		 1834
1835 if ($type eq 'in' || $type eq 'out') {
1836 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1837 # OK
1838 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
e5076eee
DM		 1839 $action = $2;
1840 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1841 die "unknown macro '$1'\n" if !$preferred_name;
1842 $macro = $preferred_name;
92e976b3
DM		 1843 } else {
1844 die "unknown action '$action'\n";
1845 }
1846 } elsif ($type eq 'group') {
92e976b3 1847 die "groups disabled\n" if !$allow_groups;
44be8ceb 1848 die "invalid characters in group name\n" if $action !~ m/^${security_group_name_pattern}$/;
51bae274 1849 } else {
92e976b3 1850 die "unknown rule type '$type'\n";
51bae274
DM		 1851 }
1852
dba740a9
DM		 1853 while (length($line)) {
1854 if ($line =~ s/^-i (\S+)\s*//) {
1855 die "parameter -i not allowed\n" if !$allow_iface;
1856 $iface = $1;
1857 PVE::JSONSchema::pve_verify_iface($iface);
1858 next;
1859 }
51bae274 1860
dba740a9 1861 last if $type eq 'group';
51bae274 1862
dba740a9
DM		 1863 if ($line =~ s/^-p (\S+)\s*//) {
1864 $proto = $1;
1865 pve_fw_verify_protocol_spec($proto);
1866 next;
1867 }
1868 if ($line =~ s/^-dport (\S+)\s*//) {
1869 $dport = $1;
1870 parse_port_name_number_or_range($dport);
1871 next;
1872 }
1873 if ($line =~ s/^-sport (\S+)\s*//) {
1874 $sport = $1;
1875 parse_port_name_number_or_range($sport);
1876 next;
1877 }
1878 if ($line =~ s/^-source (\S+)\s*//) {
1879 $source = $1;
1880 parse_address_list($source);
1881 next;
1882 }
1883 if ($line =~ s/^-dest (\S+)\s*//) {
1884 $dest = $1;
1885 parse_address_list($dest);
1886 next;
1887 }
51bae274 1888
dba740a9
DM		 1889 last;
1890 }
ba791b1f 1891
dba740a9 1892 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 1893
e5076eee 1894 return {
92e976b3 1895 type => $type,
ea9e5116 1896 enable => $enable,
11bac5c2 1897 comment => $comment,
51bae274 1898 action => $action,
e5076eee 1899 macro => $macro,
51bae274
DM		 1900 iface => $iface,
1901 source => $source,
1902 dest => $dest,
51bae274
DM		 1903 proto => $proto,
1904 dport => $dport,
1905 sport => $sport,
51bae274
DM		 1906 };
1907}
1908
2d404ffc 1909sub parse_vmfw_option {
85c6eaed
DM		 1910 my ($line) = @_;
1911
1912 my ($opt, $value);
1913
178a63be
DM		 1914 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1915
6bafd113 1916 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 1917 $opt = lc($1);
1918 $value = int($2);
178a63be
DM		 1919 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1920 $opt = lc($1);
1921 $value = $2 ? lc($3) : '';
72f63fde 1922 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 1923 $opt = lc($1);
1924 $value = uc($3);
b47ecc88
AD		 1925 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1926 $opt = lc($1);
1927 $value = $2;
9c6b6efd 1928 } else {
85c6eaed
DM		 1929 chomp $line;
1930 die "can't parse option '$line'\n"
1931 }
1932
1933 return ($opt, $value);
1934}
1935
2d404ffc
DM		 1936sub parse_hostfw_option {
1937 my ($line) = @_;
1938
1939 my ($opt, $value);
1940
1941 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1942
c50a5a68 1943 if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
2d404ffc
DM		 1944 $opt = lc($1);
1945 $value = int($2);
178a63be 1946 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 1947 $opt = lc($1);
1948 $value = $2 ? lc($3) : '';
28c082a1 1949 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 1950 $opt = lc($1);
1951 $value = int($2);
2d404ffc
DM		 1952 } else {
1953 chomp $line;
1954 die "can't parse option '$line'\n"
1955 }
1956
1957 return ($opt, $value);
1958}
1959
c6f5cc88
DM		 1960sub parse_clusterfw_option {
1961 my ($line) = @_;
1962
1963 my ($opt, $value);
1964
1965 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
1966 $opt = lc($1);
1967 $value = int($2);
63324b09
DM		 1968 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1969 $opt = lc($1);
1970 $value = uc($3);
c6f5cc88
DM		 1971 } else {
1972 chomp $line;
1973 die "can't parse option '$line'\n"
1974 }
1975
1976 return ($opt, $value);
1977}
1978
e76a9f53 1979sub parse_alias {
92e1209b
AD		 1980 my ($line) = @_;
1981
81d574a7
DM		 1982 # we can add single line comments to the end of the line
1983 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
1984
92e1209b 1985 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7
DM		 1986 my ($name, $cidr) = ($1, $2);
1987 $cidr =~ s|/32$||;
1988 pve_verify_ipv4_or_cidr($cidr);
1989 my $data = {
1990 name => $name,
1991 cidr => $cidr,
1992 };
1993 $data->{comment} = $comment if $comment;
1994 return $data;
92e1209b
AD		 1995 }
1996
81d574a7 1997 return undef;
92e1209b
AD		 1998}
1999
51bae274
DM		 2000sub parse_vm_fw_rules {
2001 my ($filename, $fh) = @_;
2002
e76a9f53
DM		 2003 my $res = {
2004 rules => [],
2005 options => {},
2006 aliases => {},
2007 };
51bae274
DM		 2008
2009 my $section;
2010
5e1267a5
DM		 2011 while (defined(my $line = <$fh>)) {
2012 next if $line =~ m/^#/;
2013 next if $line =~ m/^\s*$/;
2014
961b4928
DM		 2015 my $linenr = $fh->input_line_number();
2016 my $prefix = "$filename (line $linenr)";
2017
85c6eaed 2018 if ($line =~ m/^\[(\S+)\]\s*$/i) {
5e1267a5 2019 $section = lc($1);
85c6eaed 2020 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 2021 next;
2022 }
51bae274 2023 if (!$section) {
961b4928 2024 warn "$prefix: skip line - no section";
5e1267a5
DM		 2025 next;
2026 }
2027
85c6eaed
DM		 2028 next if !$res->{$section}; # skip undefined section
2029
2030 if ($section eq 'options') {
6158271d 2031 eval {
2d404ffc 2032 my ($opt, $value) = parse_vmfw_option($line);
85c6eaed
DM		 2033 $res->{options}->{$opt} = $value;
2034 };
2035 warn "$prefix: $@" if $@;
2036 next;
2037 }
2038
e76a9f53
DM		 2039 if ($section eq 'aliases') {
2040 eval {
2041 my $data = parse_alias($line);
2042 $res->{aliases}->{lc($data->{name})} = $data;
2043 };
2044 warn "$prefix: $@" if $@;
2045 next;
2046 }
2047
e5076eee
DM		 2048 my $rule;
2049 eval { $rule = parse_fw_rule($line, 1, 1); };
51bae274 2050 if (my $err = $@) {
961b4928 2051 warn "$prefix: $err";
5e1267a5
DM		 2052 next;
2053 }
2054
e5076eee 2055 push @{$res->{$section}}, $rule;
51bae274
DM		 2056 }
2057
2058 return $res;
2059}
2060
2061sub parse_host_fw_rules {
2062 my ($filename, $fh) = @_;
2063
92e976b3 2064 my $res = { rules => [], options => {}};
51bae274
DM		 2065
2066 my $section;
2067
2068 while (defined(my $line = <$fh>)) {
2069 next if $line =~ m/^#/;
2070 next if $line =~ m/^\s*$/;
2071
961b4928
DM		 2072 my $linenr = $fh->input_line_number();
2073 my $prefix = "$filename (line $linenr)";
2074
2d404ffc 2075 if ($line =~ m/^\[(\S+)\]\s*$/i) {
51bae274 2076 $section = lc($1);
2d404ffc 2077 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 2078 next;
2079 }
51bae274 2080 if (!$section) {
961b4928 2081 warn "$prefix: skip line - no section";
5e1267a5
DM		 2082 next;
2083 }
2084
2d404ffc
DM		 2085 next if !$res->{$section}; # skip undefined section
2086
2087 if ($section eq 'options') {
2088 eval {
2d404ffc
DM		 2089 my ($opt, $value) = parse_hostfw_option($line);
2090 $res->{options}->{$opt} = $value;
2091 };
2092 warn "$prefix: $@" if $@;
2093 next;
2094 }
2095
e5076eee
DM		 2096 my $rule;
2097 eval { $rule = parse_fw_rule($line, 1, 1); };
ecbea048 2098 if (my $err = $@) {
961b4928 2099 warn "$prefix: $err";
ecbea048 2100 next;
ecbea048 2101 }
cbb5d6f3 2102
e5076eee 2103 push @{$res->{$section}}, $rule;
51bae274 2104 }
ecbea048 2105
51bae274
DM		 2106 return $res;
2107}
4cdbb3b7 2108
c6f5cc88 2109sub parse_cluster_fw_rules {
51bae274 2110 my ($filename, $fh) = @_;
5e1267a5 2111
51bae274
DM		 2112 my $section;
2113 my $group;
2114
e34d0e58
DM		 2115 my $res = {
2116 rules => [],
2117 options => {},
2118 aliases => {},
2119 groups => {},
2120 group_comments => {},
d72c631c 2121 ipset => {} ,
e34d0e58 2122 ipset_comments => {},
0d22acb3 2123 };
6158271d 2124
51bae274
DM		 2125 while (defined(my $line = <$fh>)) {
2126 next if $line =~ m/^#/;
2127 next if $line =~ m/^\s*$/;
2128
961b4928
DM		 2129 my $linenr = $fh->input_line_number();
2130 my $prefix = "$filename (line $linenr)";
2131
c6f5cc88
DM		 2132 if ($line =~ m/^\[options\]$/i) {
2133 $section = 'options';
2134 next;
2135 }
2136
92e1209b
AD		 2137 if ($line =~ m/^\[aliases\]$/i) {
2138 $section = 'aliases';
2139 next;
2140 }
2141
0d22acb3 2142 if ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
c6f5cc88 2143 $section = 'groups';
92e976b3 2144 $group = lc($1);
0d22acb3 2145 my $comment = $2;
c85c87f9 2146 $res->{$section}->{$group} = [];
649e4d57
DM		 2147 $res->{group_comments}->{$group} = decode('utf8', $comment)
2148 if $comment;
51bae274
DM		 2149 next;
2150 }
34cdedfa 2151
c6f5cc88
DM		 2152 if ($line =~ m/^\[rules\]$/i) {
2153 $section = 'rules';
2154 next;
2155 }
cbb5d6f3 2156
d72c631c 2157 if ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
34cdedfa
AD		 2158 $section = 'ipset';
2159 $group = lc($1);
d72c631c 2160 my $comment = $2;
c85c87f9 2161 $res->{$section}->{$group} = [];
e34d0e58 2162 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2163 if $comment;
34cdedfa
AD		 2164 next;
2165 }
2166
c6f5cc88 2167 if (!$section) {
cbb5d6f3 2168 warn "$prefix: skip line - no section\n";
51bae274
DM		 2169 next;
2170 }
2171
c6f5cc88
DM		 2172 if ($section eq 'options') {
2173 eval {
2174 my ($opt, $value) = parse_clusterfw_option($line);
2175 $res->{options}->{$opt} = $value;
2176 };
2177 warn "$prefix: $@" if $@;
92e1209b
AD		 2178 } elsif ($section eq 'aliases') {
2179 eval {
e76a9f53 2180 my $data = parse_alias($line);
81d574a7 2181 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2182 };
2183 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2184 } elsif ($section eq 'rules') {
2185 my $rule;
2186 eval { $rule = parse_fw_rule($line, 1, 1); };
2187 if (my $err = $@) {
2188 warn "$prefix: $err";
2189 next;
2190 }
2191 push @{$res->{$section}}, $rule;
2192 } elsif ($section eq 'groups') {
34cdedfa
AD		 2193 my $rule;
2194 eval { $rule = parse_fw_rule($line, 0, 0); };
2195 if (my $err = $@) {
2196 warn "$prefix: $err";
2197 next;
2198 }
3f95d14a 2199 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2200 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2201 # we can add single line comments to the end of the rule
2202 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2203
30f1b100 2204 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2205 my $nomatch = $1;
9d6f90e6 2206 my $cidr = $2;
2a052ee3 2207
44be8ceb 2208 if($cidr !~ m/^${ip_alias_pattern}$/) {
92e1209b 2209 $cidr =~ s|/32$||;
e34d0e58 2210
92e1209b
AD		 2211 eval { pve_verify_ipv4_or_cidr($cidr); };
2212 if (my $err = $@) {
2213 warn "$prefix: $cidr - $err";
2214 next;
2215 }
2a052ee3 2216 }
2a052ee3 2217
e34d0e58 2218 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2219 $entry->{nomatch} = 1 if $nomatch;
2220 $entry->{comment} = $comment if $comment;
e34d0e58 2221
9d6f90e6 2222 push @{$res->{$section}->{$group}}, $entry;
51bae274 2223 }
5e1267a5
DM		 2224 }
2225
2226 return $res;
2227}
2228
06320eb0
DM		 2229sub run_locked {
2230 my ($code, @param) = @_;
2231
2232 my $timeout = 10;
2233
2234 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2235
2236 die $@ if $@;
2237
2238 return $res;
2239}
2240
5e1267a5
DM		 2241sub read_local_vm_config {
2242
2243 my $openvz = {};
5e1267a5
DM		 2244 my $qemu = {};
2245
c8301d63 2246 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2247
c8301d63
DM		 2248 my $vmlist = PVE::Cluster::get_vmlist();
2249 return $vmdata if !$vmlist || !$vmlist->{ids};
2250 my $ids = $vmlist->{ids};
2251
2252 foreach my $vmid (keys %$ids) {
2253 next if !$vmid; # skip VE0
2254 my $d = $ids->{$vmid};
2255 next if !$d->{node} || $d->{node} ne $nodename;
2256 next if !$d->{type};
2257 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2258 if ($have_pve_manager) {
2259 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2260 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2261 $openvz->{$vmid} = $conf;
2262 }
c8301d63
DM		 2263 }
2264 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2265 if ($have_qemu_server) {
2266 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2267 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2268 $qemu->{$vmid} = $conf;
2269 }
c8301d63 2270 }
5e1267a5
DM		 2271 }
2272 }
d9fee004 2273
5e1267a5
DM		 2274 return $vmdata;
2275};
2276
e7b35711 2277sub load_vmfw_conf {
8aef5177 2278 my ($vmid, $dir) = @_;
e7b35711
DM		 2279
2280 my $vmfw_conf = {};
2281
8aef5177
DM		 2282 $dir = "/etc/pve/firewall" if !defined($dir);
2283
2284 my $filename = "$dir/$vmid.fw";
e7b35711
DM		 2285 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2286 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
2287 }
2288
2289 return $vmfw_conf;
2290}
2291
464f933e 2292my $format_rules = sub {
dba740a9 2293 my ($rules, $allow_iface) = @_;
464f933e
DM		 2294
2295 my $raw = '';
2296
2297 foreach my $rule (@$rules) {
c14dacdf 2298 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2299 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2300 $raw .= uc($rule->{type});
7ca36671
DM		 2301 if ($rule->{macro}) {
2302 $raw .= " $rule->{macro}($rule->{action})";
2303 } else {
2304 $raw .= " " . $rule->{action};
2305 }
dba740a9
DM		 2306 if ($allow_iface && $rule->{iface}) {
2307 $raw .= " -i $rule->{iface}";
2308 }
c14dacdf
DM		 2309
2310 if ($rule->{type} ne 'group') {
dba740a9
DM		 2311 $raw .= " -source $rule->{source}" if $rule->{source};
2312 $raw .= " -dest $rule->{dest}" if $rule->{dest};
2313 $raw .= " -p $rule->{proto}" if $rule->{proto};
2314 $raw .= " -dport $rule->{dport}" if $rule->{dport};
2315 $raw .= " -sport $rule->{sport}" if $rule->{sport};
c14dacdf
DM		 2316 }
2317
cbb5d6f3 2318 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2319 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2320 $raw .= "\n";
2321 } else {
c14dacdf 2322 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2323 }
2324 }
2325
2326 return $raw;
2327};
2328
2329my $format_options = sub {
68c90e21
DM		 2330 my ($options) = @_;
2331
2332 my $raw = '';
464f933e
DM		 2333
2334 $raw .= "[OPTIONS]\n\n";
2335 foreach my $opt (keys %$options) {
2336 $raw .= "$opt: $options->{$opt}\n";
2337 }
2338 $raw .= "\n";
68c90e21
DM		 2339
2340 return $raw;
464f933e
DM		 2341};
2342
0d5f0a0f
DM		 2343my $format_aliases = sub {
2344 my ($aliases) = @_;
2345
2346 my $raw = '';
2347
2348 $raw .= "[ALIASES]\n\n";
2349 foreach my $k (keys %$aliases) {
81d574a7
DM		 2350 my $e = $aliases->{$k};
2351 $raw .= "$e->{name} $e->{cidr}";
2352 $raw .= " # " . encode('utf8', $e->{comment})
2353 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2354 $raw .= "\n";
0d5f0a0f
DM		 2355 }
2356 $raw .= "\n";
2357
2358 return $raw;
2359};
2360
9d6f90e6
DM		 2361my $format_ipset = sub {
2362 my ($options) = @_;
2363
2364 my $raw = '';
2365
6e299ae3 2366 my $nethash = {};
9d6f90e6 2367 foreach my $entry (@$options) {
6e299ae3
DM		 2368 $nethash->{$entry->{cidr}} = $entry;
2369 }
2370
2371 foreach my $cidr (sort keys %$nethash) {
2372 my $entry = $nethash->{$cidr};
9d6f90e6
DM		 2373 my $line = $entry->{nomatch} ? '!' : '';
2374 $line .= $entry->{cidr};
2375 $line .= " # " . encode('utf8', $entry->{comment})
2376 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2377 $raw .= "$line\n";
2378 }
e34d0e58 2379
9d6f90e6
DM		 2380 return $raw;
2381};
2382
464f933e
DM		 2383sub save_vmfw_conf {
2384 my ($vmid, $vmfw_conf) = @_;
2385
2386 my $raw = '';
2387
2388 my $options = $vmfw_conf->{options};
68c90e21 2389 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2390
e76a9f53
DM		 2391 my $aliases = $vmfw_conf->{aliases};
2392 $raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
2393
8824b2f0 2394 my $rules = $vmfw_conf->{rules} || [];
464f933e
DM		 2395 if (scalar(@$rules)) {
2396 $raw .= "[RULES]\n\n";
2397 $raw .= &$format_rules($rules, 1);
2398 $raw .= "\n";
2399 }
2400
2401 my $filename = "/etc/pve/firewall/$vmid.fw";
2402 PVE::Tools::file_set_contents($filename, $raw);
2403}
2404
6fc63ffd 2405sub read_vm_firewall_configs {
8aef5177
DM		 2406 my ($vmdata, $dir) = @_;
2407
6fc63ffd 2408 my $vmfw_configs = {};
c8301d63 2409
5e1267a5 2410 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
8aef5177 2411 my $vmfw_conf = load_vmfw_conf($vmid, $dir);
e7b35711
DM		 2412 next if !$vmfw_conf->{options}; # skip if file does not exists
2413 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2414 }
2415
6fc63ffd 2416 return $vmfw_configs;
5e1267a5
DM		 2417}
2418
2d404ffc
DM		 2419sub get_option_log_level {
2420 my ($options, $k) = @_;
2421
2422 my $v = $options->{$k};
178a63be 2423 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2424
2425 return undef if $v eq '' || $v eq 'nolog';
2426
2427 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2428
2429 return $v if ($v >= 0) && ($v <= 7);
2430
2431 warn "unknown log level ($k = '$v')\n";
2432
2433 return undef;
2434}
2435
d8f2505e 2436sub generate_std_chains {
2d404ffc 2437 my ($ruleset, $options) = @_;
cbb5d6f3 2438
2d404ffc
DM		 2439 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2440
2441 # same as shorewall smurflog.
782c4cde 2442 my $chain = 'PVEFW-smurflog';
12f3796e 2443 $pve_std_chains->{$chain} = [];
782c4cde
DM		 2444
2445 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2446 push @{$pve_std_chains->{$chain}}, "-j DROP";
2d404ffc
DM		 2447
2448 # same as shorewall logflags action.
2449 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2450 $chain = 'PVEFW-logflags';
12f3796e
DM		 2451 $pve_std_chains->{$chain} = [];
2452
782c4cde
DM		 2453 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2454 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2455 push @{$pve_std_chains->{$chain}}, "-j DROP";
d8f2505e
DM		 2456
2457 foreach my $chain (keys %$pve_std_chains) {
2458 ruleset_create_chain($ruleset, $chain);
2459 foreach my $rule (@{$pve_std_chains->{$chain}}) {
2460 if (ref($rule)) {
2461 ruleset_generate_rule($ruleset, $chain, $rule);
2462 } else {
2463 ruleset_addrule($ruleset, $chain, $rule);
2464 }
2465 }
2466 }
2467}
2468
34cdedfa 2469sub generate_ipset_chains {
dd7a13fd 2470 my ($ipset_ruleset, $fw_conf) = @_;
34cdedfa 2471
dd7a13fd 2472 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
92e1209b 2473 generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}, $fw_conf->{aliases});
34cdedfa
AD		 2474 }
2475}
2476
2477sub generate_ipset {
92e1209b 2478 my ($ipset_ruleset, $name, $options, $aliases) = @_;
34cdedfa 2479
dd7a13fd
DM		 2480 my $hashsize = scalar(@$options);
2481 if ($hashsize <= 64) {
2a052ee3 2482 $hashsize = 64;
dd7a13fd 2483 } else {
2a052ee3
AD		 2484 $hashsize = round_powerof2($hashsize);
2485 }
2486
dd7a13fd 2487 push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize";
34cdedfa 2488
30f1b100
DM		 2489 # remove duplicates
2490 my $nethash = {};
9d6f90e6 2491 foreach my $entry (@$options) {
92e1209b 2492 my $cidr = $entry->{cidr};
d4091b82 2493 if ($cidr =~ m/^${ip_alias_pattern}$/) {
81d574a7
DM		 2494 my $alias = lc($cidr);
2495 if ($aliases->{$alias}) {
2496 $entry->{cidr} = $aliases->{$alias}->{cidr};
7dd13259 2497 $nethash->{$entry->{cidr}} = $entry;
d4091b82 2498 } else {
81d574a7 2499 warn "no such alias '$cidr'\n" if !$aliases->{$alias};
d4091b82 2500 }
7dd13259
DM		 2501 } else {
2502 $nethash->{$entry->{cidr}} = $entry;
92e1209b 2503 }
30f1b100
DM		 2504 }
2505
2506 foreach my $cidr (sort keys %$nethash) {
2507 my $entry = $nethash->{$cidr};
2508
9d6f90e6
DM		 2509 my $cmd = "add $name $cidr";
2510 if ($entry->{nomatch}) {
2511 if ($feature_ipset_nomatch) {
2512 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2513 } else {
2514 warn "ignore !$cidr - nomatch not supported by kernel\n";
2515 }
2516 } else {
2517 push @{$ipset_ruleset->{$name}}, $cmd;
2518 }
34cdedfa 2519 }
2a052ee3
AD		 2520}
2521
2522sub round_powerof2 {
dd7a13fd 2523 my ($int) = @_;
2a052ee3 2524
dd7a13fd
DM		 2525 $int--;
2526 $int |= $int >> $_ foreach (1,2,4,8,16);
2527 return ++$int;
34cdedfa
AD		 2528}
2529
fca39c2c 2530sub load_clusterfw_conf {
8aef5177
DM		 2531 my ($filename) = @_;
2532
2533 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 2534
fca39c2c 2535 my $cluster_conf = {};
8aef5177
DM		 2536 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2537 $cluster_conf = parse_cluster_fw_rules($filename, $fh);
51bae274 2538 }
5e1267a5 2539
fca39c2c 2540 return $cluster_conf;
e5d76bde
DM		 2541}
2542
fca39c2c
DM		 2543sub save_clusterfw_conf {
2544 my ($cluster_conf) = @_;
9c7e0858
DM		 2545
2546 my $raw = '';
9c7e0858 2547
c6f5cc88 2548 my $options = $cluster_conf->{options};
68c90e21 2549 $raw .= &$format_options($options) if scalar(keys %$options);
9c7e0858 2550
0d5f0a0f
DM		 2551 my $aliases = $cluster_conf->{aliases};
2552 $raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
e34d0e58 2553
9d6f90e6 2554 foreach my $ipset (sort keys %{$cluster_conf->{ipset}}) {
d72c631c 2555 if (my $comment = $cluster_conf->{ipset_comments}->{$ipset}) {
649e4d57
DM		 2556 my $utf8comment = encode('utf8', $comment);
2557 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
d72c631c
DM		 2558 } else {
2559 $raw .= "[IPSET $ipset]\n\n";
2560 }
9d6f90e6
DM		 2561 my $options = $cluster_conf->{ipset}->{$ipset};
2562 $raw .= &$format_ipset($options);
2563 $raw .= "\n";
2564 }
c6f5cc88
DM		 2565
2566 my $rules = $cluster_conf->{rules};
2567 if (scalar(@$rules)) {
2568 $raw .= "[RULES]\n\n";
63c91681 2569 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 2570 $raw .= "\n";
2571 }
2572
2573 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
2574 my $rules = $cluster_conf->{groups}->{$group};
0d22acb3 2575 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
649e4d57
DM		 2576 my $utf8comment = encode('utf8', $comment);
2577 $raw .= "[group $group] # $utf8comment\n\n";
0d22acb3
DM		 2578 } else {
2579 $raw .= "[group $group]\n\n";
2580 }
2581
63c91681 2582 $raw .= &$format_rules($rules, 0);
9c7e0858
DM		 2583 $raw .= "\n";
2584 }
2585
fca39c2c 2586 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 2587}
2588
8b27beb9 2589sub load_hostfw_conf {
8aef5177
DM		 2590 my ($filename) = @_;
2591
2592 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 2593
2594 my $hostfw_conf = {};
8aef5177
DM		 2595 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2596 $hostfw_conf = parse_host_fw_rules($filename, $fh);
8b27beb9
DM		 2597 }
2598 return $hostfw_conf;
2599}
2600
63c91681
DM		 2601sub save_hostfw_conf {
2602 my ($hostfw_conf) = @_;
2603
2604 my $raw = '';
2605
2606 my $options = $hostfw_conf->{options};
68c90e21 2607 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2608
63c91681
DM		 2609 my $rules = $hostfw_conf->{rules};
2610 if (scalar(@$rules)) {
2611 $raw .= "[RULES]\n\n";
2612 $raw .= &$format_rules($rules, 1);
2613 $raw .= "\n";
2614 }
2615
2616 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
2617}
2618
e5d76bde 2619sub compile {
8aef5177 2620 my ($cluster_conf, $hostfw_conf, $vmdata) = @_;
3dfa8a7f 2621
8aef5177
DM		 2622 my $vmfw_configs;
2623
2624 if ($vmdata) { # test mode
2625 my $testdir = $vmdata->{testdir} || die "no test directory specified";
2626 my $filename = "$testdir/cluster.fw";
8aef5177
DM		 2627 $cluster_conf = load_clusterfw_conf($filename);
2628
2629 $filename = "$testdir/host.fw";
8aef5177
DM		 2630 $hostfw_conf = load_hostfw_conf($filename);
2631
2632 $vmfw_configs = read_vm_firewall_configs($vmdata, $testdir);
2633 } else { # normal operation
2634 $cluster_conf = load_clusterfw_conf() if !$cluster_conf;
2635
2636 $hostfw_conf = load_hostfw_conf() if !$hostfw_conf;
2637
2638 $vmdata = read_local_vm_config();
2639 $vmfw_configs = read_vm_firewall_configs($vmdata);
2640 }
3dfa8a7f 2641
e5d76bde 2642
27083984 2643 $cluster_conf->{ipset}->{venet0} = [];
eb399cef 2644
525778d7
DM		 2645 my $localnet;
2646 if ($cluster_conf->{aliases}->{local_network}) {
2647 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2648 } else {
2649 $localnet = local_network() || '127.0.0.0/8';
2650 $cluster_conf->{aliases}->{local_network} = { cidr => $localnet };
2651 }
2652
2653 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
eb399cef 2654
3fa83edf
DM		 2655 my $ruleset = {};
2656
dec84fcd
DM		 2657 ruleset_create_chain($ruleset, "PVEFW-INPUT");
2658 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 2659
fadb13dd 2660 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 2661
8b27beb9 2662 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 2663
88733a74
AD		 2664 # fixme: what log level should we use here?
2665 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2666
097820b0 2667 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
88733a74 2668
e2943485 2669 ruleset_create_chain($ruleset, "PVEFW-VENET-OUT");
27083984
AD		 2670 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set PVEFW-venet0 src -j PVEFW-VENET-OUT");
2671 ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set PVEFW-venet0 src -j PVEFW-VENET-OUT");
e2943485
DM		 2672
2673 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
2428e394 2674 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2675
d1b41c08 2676 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
e2943485
DM		 2677
2678 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
d1b41c08 2679 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
e2943485
DM		 2680
2681 ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
2428e394 2682 ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options, $cluster_conf, $loglevel);
e2943485 2683
27083984 2684 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set PVEFW-venet0 dst -j PVEFW-VENET-IN");
e2943485 2685
92e976b3 2686 generate_std_chains($ruleset, $hostfw_options);
fadb13dd 2687
6d2ab017 2688 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 2689
fca39c2c 2690 enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable;
3fa83edf 2691
27083984 2692 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set PVEFW-venet0 dst -j PVEFW-VENET-IN");
62689a1e 2693
6158271d 2694 # generate firewall rules for QEMU VMs
3fa83edf
DM		 2695 foreach my $vmid (keys %{$vmdata->{qemu}}) {
2696 my $conf = $vmdata->{qemu}->{$vmid};
6fc63ffd 2697 my $vmfw_conf = $vmfw_configs->{$vmid};
fa9c4a6f 2698 next if !$vmfw_conf;
03940656 2699 next if !$vmfw_conf->{options}->{enable};
3fa83edf
DM		 2700
2701 foreach my $netid (keys %$conf) {
2702 next if $netid !~ m/^net(\d+)$/;
2703 my $net = PVE::QemuServer::parse_net($conf->{$netid});
f953da2d 2704 next if !$net->{firewall};
3fa83edf 2705 my $iface = "tap${vmid}i$1";
5e1267a5 2706
c29f55c9 2707 my $macaddr = $net->{macaddr};
58638f2c 2708 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
a01c32c7 2709 $vmfw_conf, $vmid, 'IN');
58638f2c 2710 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
a01c32c7 2711 $vmfw_conf, $vmid, 'OUT');
3fa83edf
DM		 2712 }
2713 }
c8301d63
DM		 2714
2715 # generate firewall rules for OpenVZ containers
2716 foreach my $vmid (keys %{$vmdata->{openvz}}) {
2717 my $conf = $vmdata->{openvz}->{$vmid};
2718
2719 my $vmfw_conf = $vmfw_configs->{$vmid};
2720 next if !$vmfw_conf;
03940656 2721 next if !$vmfw_conf->{options}->{enable};
c8301d63
DM		 2722
2723 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
2724 my $ip = $conf->{ip_address}->{value};
e34d0e58 2725 $ip =~ s/\s+/,/g;
27083984
AD		 2726 parse_address_list($ip); # make sure we have a valid $ip list
2727
2728 my @ips = split(',', $ip);
2729
2730 foreach my $singleip (@ips) {
2731 my $venet0ipset = {};
2732 $venet0ipset->{cidr} = $singleip;
2733 push @{$cluster_conf->{ipset}->{venet0}}, $venet0ipset;
2734 }
2735
58638f2c
DM		 2736 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN');
2737 generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT');
c8301d63
DM		 2738 }
2739
2740 if ($conf->{netif} && $conf->{netif}->{value}) {
2741 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
c8301d63
DM		 2742 foreach my $netid (keys %$netif) {
2743 my $d = $netif->{$netid};
530c005e 2744
12d0f130 2745 my $macaddr = $d->{mac};
c8301d63 2746 my $iface = $d->{host_ifname};
58638f2c 2747 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
a01c32c7 2748 $vmfw_conf, $vmid, 'IN');
58638f2c 2749 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
a01c32c7 2750 $vmfw_conf, $vmid, 'OUT');
c8301d63
DM		 2751 }
2752 }
2753 }
c0413e35 2754
097820b0
AD		 2755 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
2756 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
2757 }
2758
27083984
AD		 2759 my $ipset_ruleset = {};
2760 generate_ipset_chains($ipset_ruleset, $cluster_conf);
2761
3dfa8a7f 2762 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 2763}
2764
2765sub get_ruleset_status {
4bd0a9c4 2766 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 2767
2768 my $statushash = {};
2769
2770 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 2771 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 2772
3fa83edf
DM		 2773 $statushash->{$chain}->{sig} = $sig;
2774
2775 my $oldsig = $active_chains->{$chain};
2776 if (!defined($oldsig)) {
2777 $statushash->{$chain}->{action} = 'create';
2778 } else {
2779 if ($oldsig eq $sig) {
2780 $statushash->{$chain}->{action} = 'exists';
2781 } else {
2782 $statushash->{$chain}->{action} = 'update';
2783 }
2784 }
2785 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2786 foreach my $cmd (@{$ruleset->{$chain}}) {
2787 print "\t$cmd\n" if $verbose;
2788 }
2789 }
2790
2791 foreach my $chain (sort keys %$active_chains) {
2792 if (!defined($ruleset->{$chain})) {
2793 my $sig = $active_chains->{$chain};
2794 $statushash->{$chain}->{action} = 'delete';
2795 $statushash->{$chain}->{sig} = $sig;
2796 print "delete $chain ($sig)\n" if $verbose;
2797 }
6158271d 2798 }
2a052ee3 2799
3fa83edf
DM		 2800 return $statushash;
2801}
2802
3fa83edf
DM		 2803sub print_sig_rule {
2804 my ($chain, $sig) = @_;
2805
09d5f68e
DM		 2806 # We just use this to store a SHA1 checksum used to detect changes
2807 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 2808}
2809
df7cb349 2810sub get_ruleset_cmdlist {
a84f4d96 2811 my ($ruleset, $verbose) = @_;
3fa83edf 2812
3fa83edf 2813 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 2814
4bd0a9c4
DM		 2815 my ($active_chains, $hooks) = iptables_get_chains();
2816 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 2817
2818 # create missing chains first
2819 foreach my $chain (sort keys %$ruleset) {
2820 my $stat = $statushash->{$chain};
2821 die "internal error" if !$stat;
2822 next if $stat->{action} ne 'create';
886aba9c 2823
3fa83edf
DM		 2824 $cmdlist .= ":$chain - [0:0]\n";
2825 }
2826
4bd0a9c4
DM		 2827 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2828 if (!$hooks->{$h}) {
2829 $cmdlist .= "-A $h -j PVEFW-$h\n";
2830 }
3fa83edf
DM		 2831 }
2832
2833 foreach my $chain (sort keys %$ruleset) {
2834 my $stat = $statushash->{$chain};
2835 die "internal error" if !$stat;
2836
2837 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2838 $cmdlist .= "-F $chain\n";
2839 foreach my $cmd (@{$ruleset->{$chain}}) {
2840 $cmdlist .= "$cmd\n";
2841 }
2842 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2843 } elsif ($stat->{action} eq 'delete') {
f5d28682 2844 die "internal error"; # this should not happen
3fa83edf
DM		 2845 } elsif ($stat->{action} eq 'exists') {
2846 # do nothing
2847 } else {
2848 die "internal error - unknown status '$stat->{action}'";
2849 }
2850 }
2851
f5d28682
DM		 2852 foreach my $chain (keys %$statushash) {
2853 next if $statushash->{$chain}->{action} ne 'delete';
2854 $cmdlist .= "-F $chain\n";
2855 }
2856 foreach my $chain (keys %$statushash) {
2857 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 2858 next if $chain eq 'PVEFW-INPUT';
2859 next if $chain eq 'PVEFW-OUTPUT';
2860 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 2861 $cmdlist .= "-X $chain\n";
2862 }
2863
3f95d14a 2864 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 2865
3fa83edf
DM		 2866 $cmdlist .= "COMMIT\n";
2867
3f95d14a 2868 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 2869}
2870
34cdedfa 2871sub get_ipset_cmdlist {
dd7a13fd 2872 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 2873
2874 my $cmdlist = "";
2875
dd7a13fd
DM		 2876 my $delete_cmdlist = "";
2877
4bd0a9c4
DM		 2878 my $active_chains = ipset_get_chains();
2879 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 2880
e34d0e58 2881 # remove stale _swap chains
30f1b100
DM		 2882 foreach my $chain (keys %$active_chains) {
2883 if ($chain =~ m/^PVEFW-\S+_swap$/) {
2884 $cmdlist .= "destroy $chain\n";
2885 }
2886 }
2887
dd7a13fd
DM		 2888 foreach my $chain (sort keys %$ruleset) {
2889 my $stat = $statushash->{$chain};
2890 die "internal error" if !$stat;
2a052ee3 2891
dd7a13fd
DM		 2892 if ($stat->{action} eq 'create') {
2893 foreach my $cmd (@{$ruleset->{$chain}}) {
34cdedfa
AD		 2894 $cmdlist .= "$cmd\n";
2895 }
dd7a13fd 2896 }
34cdedfa 2897
dd7a13fd
DM		 2898 if ($stat->{action} eq 'update') {
2899 my $chain_swap = $chain."_swap";
cbb5d6f3 2900
dd7a13fd
DM		 2901 foreach my $cmd (@{$ruleset->{$chain}}) {
2902 $cmd =~ s/$chain/$chain_swap/;
2903 $cmdlist .= "$cmd\n";
34cdedfa 2904 }
dd7a13fd
DM		 2905 $cmdlist .= "swap $chain_swap $chain\n";
2906 $cmdlist .= "flush $chain_swap\n";
2907 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 2908 }
34cdedfa 2909
dd7a13fd 2910 }
3f95d14a 2911
dd7a13fd
DM		 2912 foreach my $chain (keys %$statushash) {
2913 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 2914
dd7a13fd
DM		 2915 $delete_cmdlist .= "flush $chain\n";
2916 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 2917 }
2918
dd7a13fd 2919 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 2920
dd7a13fd 2921 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 2922}
2923
6b9f68a2 2924sub apply_ruleset {
34cdedfa 2925 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
6b9f68a2
DM		 2926
2927 enable_bridge_firewall();
2928
cbb5d6f3 2929 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 2930 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 2931
81a0bf43 2932 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
2a052ee3 2933
81a0bf43
DM		 2934 if ($verbose) {
2935 if ($ipset_changes) {
2936 print "ipset changes:\n";
2937 print $ipset_create_cmdlist if $ipset_create_cmdlist;
2938 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
2939 }
3f95d14a 2940
81a0bf43
DM		 2941 if ($changes) {
2942 print "iptables changes:\n";
2943 print $cmdlist;
2944 }
2945 }
3fa83edf 2946
2a052ee3 2947 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 2948
3fa83edf
DM		 2949 iptables_restore_cmdlist($cmdlist);
2950
dd7a13fd 2951 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 2952
6158271d 2953 # test: re-read status and check if everything is up to date
4bd0a9c4 2954 my $active_chains = iptables_get_chains();
81a0bf43 2955 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 2956
2957 my $errors;
2958 foreach my $chain (sort keys %$ruleset) {
2959 my $stat = $statushash->{$chain};
2960 if ($stat->{action} ne 'exists') {
2961 warn "unable to update chain '$chain'\n";
2962 $errors = 1;
2963 }
2964 }
b6360c3f 2965
3fa83edf 2966 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 2967
2968 update_nf_conntrack_max($hostfw_conf);
2969
2970 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
2971
b6360c3f
DM		 2972}
2973
490cdead
DM		 2974sub update_nf_conntrack_max {
2975 my ($hostfw_conf) = @_;
2976
2977 my $max = 65536; # reasonable default
2978
2979 my $options = $hostfw_conf->{options} || {};
2980
2981 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
2982 $max = $options->{nf_conntrack_max};
2983 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2984 }
2985
2986 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
2987 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
2988
2989 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
2990
2991 if ($current != $max) {
2992 my $hashsize = int($max/4);
2993 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
2994 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
2995 }
2996}
2997
28c082a1
AD		 2998sub update_nf_conntrack_tcp_timeout_established {
2999 my ($hostfw_conf) = @_;
3000
3001 my $options = $hostfw_conf->{options} || {};
3002
3003 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
3004
3005 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3006}
3007
c4a2e5ae
DM		 3008sub remove_pvefw_chains {
3009
3010 my ($chash, $hooks) = iptables_get_chains();
3011 my $cmdlist = "*filter\n";
3012
3013 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3014 if ($hooks->{$h}) {
3015 $cmdlist .= "-D $h -j PVEFW-$h\n";
3016 }
3017 }
cbb5d6f3 3018
c4a2e5ae
DM		 3019 foreach my $chain (keys %$chash) {
3020 $cmdlist .= "-F $chain\n";
3021 }
3022
3023 foreach my $chain (keys %$chash) {
3024 $cmdlist .= "-X $chain\n";
3025 }
3026 $cmdlist .= "COMMIT\n";
3027
3028 iptables_restore_cmdlist($cmdlist);
3029}
3030
8b453a09
DM		 3031sub init {
3032 my $cluster_conf = load_clusterfw_conf();
3033 my $cluster_options = $cluster_conf->{options};
3034 my $enable = $cluster_options->{enable};
3035
3036 return if !$enable;
3037
3038 # load required modules here
3039}
3040
6b9f68a2 3041sub update {
e2beb7aa 3042 my ($verbose) = @_;
6b9f68a2
DM		 3043
3044 my $code = sub {
3dfa8a7f
DM		 3045
3046 my $cluster_conf = load_clusterfw_conf();
3047 my $cluster_options = $cluster_conf->{options};
3048
51e57fee 3049 my $enable = $cluster_options->{enable};
3dfa8a7f 3050
e2beb7aa 3051 die "Firewall is disabled - cannot start\n" if !$enable;
3dfa8a7f
DM		 3052
3053 if (!$enable) {
b22130d3 3054 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 3055 print "Firewall disabled\n" if $verbose;
3056 return;
3057 }
3058
3059 my $hostfw_conf = load_hostfw_conf();
3060
3061 my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 3062
e2beb7aa 3063 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose);
6b9f68a2
DM		 3064 };
3065
3066 run_locked($code);
3067}
3068
b6360c3f 30691;
Firewall test scripts