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b6360c3f
DM		 1package PVE::Firewall;
2
3use warnings;
4use strict;
cbb5d6f3 5use POSIX;
b6360c3f 6use Data::Dumper;
09d5f68e 7use Digest::SHA;
c8301d63 8use PVE::INotify;
7ca36671 9use PVE::Exception qw(raise raise_param_exc);
e74a87f5 10use PVE::JSONSchema qw(register_standard_option get_standard_option);
c8301d63 11use PVE::Cluster;
5f0a912c 12use PVE::ProcFSTools;
009ee3ac 13use PVE::Tools qw($IPV4RE);
6b9f68a2 14use File::Basename;
5e1267a5
DM		 15use File::Path;
16use IO::File;
ecbea048 17use Net::IP;
1a301a8d 18use PVE::Tools qw(run_command lock_file dir_glob_foreach);
30c1ae52 19use Encode;
ecbea048 20
63c91681 21my $hostfw_conf_filename = "/etc/pve/local/host.fw";
fca39c2c
DM		 22my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw";
23
cbb5d6f3 24# dynamically include PVE::QemuServer and PVE::OpenVZ
d9fee004
DM		 25# to avoid dependency problems
26my $have_qemu_server;
27eval {
28 require PVE::QemuServer;
29 $have_qemu_server = 1;
30};
31
32my $have_pve_manager;
33eval {
34 require PVE::OpenVZ;
35 $have_pve_manager = 1;
36};
37
009ee3ac
DM		 38PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr);
39sub pve_verify_ipv4_or_cidr {
40 my ($cidr, $noerr) = @_;
41
30f1b100
DM		 42 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
43 return $cidr if Net::IP->new($cidr);
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
DM		 55 minLength => 2,
56 maxLength => 20,
57});
58
6302c41f
DM		 59PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
60 description => "Log level.",
61 type => 'string',
62 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
63 optional => 1,
64});
65
44be8ceb
DM		 66my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
67my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
c14dacdf 68
387d0ffc
DM		 69PVE::JSONSchema::register_standard_option('pve-security-group-name', {
70 description => "Security Group name.",
71 type => 'string',
44be8ceb 72 pattern => $security_group_name_pattern,
387d0ffc
DM		 73 minLength => 2,
74 maxLength => 20,
e74a87f5 75});
009ee3ac 76
cbb5d6f3
DM		 77my $feature_ipset_nomatch = 0;
78eval {
79 my (undef, undef, $release) = POSIX::uname();
80 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
81 my ($major, $minor) = ($1, $2);
82 $feature_ipset_nomatch = 1 if ($major > 3) ||
83 ($major == 3 && $minor >= 7);
84 }
85
86};
87
5e1267a5 88use Data::Dumper;
b6360c3f 89
c8301d63
DM		 90my $nodename = PVE::INotify::nodename();
91
06320eb0 92my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
6b9f68a2 93my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status";
06320eb0 94
2d404ffc
DM		 95my $default_log_level = 'info';
96
97my $log_level_hash = {
98 debug => 7,
99 info => 6,
100 notice => 5,
101 warning => 4,
102 err => 3,
103 crit => 2,
104 alert => 1,
105 emerg => 0,
106};
107
857f62c8 108# imported/converted from: /usr/share/shorewall/macro.*
961b4928 109my $pve_fw_macros = {
857f62c8 110 'Amanda' => [
ebd54ae9 111 "Amanda Backup",
857f62c8
DM		 112 { action => 'PARAM', proto => 'udp', dport => '10080' },
113 { action => 'PARAM', proto => 'tcp', dport => '10080' },
114 ],
115 'Auth' => [
ebd54ae9 116 "Auth (identd) traffic",
857f62c8
DM		 117 { action => 'PARAM', proto => 'tcp', dport => '113' },
118 ],
119 'BGP' => [
ebd54ae9 120 "Border Gateway Protocol traffic",
857f62c8
DM		 121 { action => 'PARAM', proto => 'tcp', dport => '179' },
122 ],
123 'BitTorrent' => [
ebd54ae9 124 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 125 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 126 { action => 'PARAM', proto => 'udp', dport => '6881' },
127 ],
128 'BitTorrent32' => [
ebd54ae9 129 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 130 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
131 { action => 'PARAM', proto => 'udp', dport => '6881' },
132 ],
133 'CVS' => [
ebd54ae9 134 "Concurrent Versions System pserver traffic",
857f62c8
DM		 135 { action => 'PARAM', proto => 'tcp', dport => '2401' },
136 ],
137 'Citrix' => [
ebd54ae9 138 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 139 { action => 'PARAM', proto => 'tcp', dport => '1494' },
140 { action => 'PARAM', proto => 'udp', dport => '1604' },
141 { action => 'PARAM', proto => 'tcp', dport => '2598' },
142 ],
143 'DAAP' => [
ebd54ae9 144 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 145 { action => 'PARAM', proto => 'tcp', dport => '3689' },
146 { action => 'PARAM', proto => 'udp', dport => '3689' },
147 ],
148 'DCC' => [
ebd54ae9 149 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 150 { action => 'PARAM', proto => 'tcp', dport => '6277' },
151 ],
152 'DHCPfwd' => [
ebd54ae9 153 "Forwarded DHCP traffic (bidirectional)",
857f62c8
DM		 154 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
155 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '67:68', sport => '67:68' },
156 ],
157 'DNS' => [
ebd54ae9 158 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 159 { action => 'PARAM', proto => 'udp', dport => '53' },
160 { action => 'PARAM', proto => 'tcp', dport => '53' },
161 ],
162 'Distcc' => [
ebd54ae9 163 "Distributed Compiler service",
857f62c8
DM		 164 { action => 'PARAM', proto => 'tcp', dport => '3632' },
165 ],
857f62c8 166 'FTP' => [
ebd54ae9 167 "File Transfer Protocol",
857f62c8
DM		 168 { action => 'PARAM', proto => 'tcp', dport => '21' },
169 ],
170 'Finger' => [
ebd54ae9 171 "Finger protocol (RFC 742)",
857f62c8
DM		 172 { action => 'PARAM', proto => 'tcp', dport => '79' },
173 ],
174 'GNUnet' => [
ebd54ae9 175 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 176 { action => 'PARAM', proto => 'tcp', dport => '2086' },
177 { action => 'PARAM', proto => 'udp', dport => '2086' },
178 { action => 'PARAM', proto => 'tcp', dport => '1080' },
179 { action => 'PARAM', proto => 'udp', dport => '1080' },
180 ],
181 'GRE' => [
ebd54ae9 182 "Generic Routing Encapsulation tunneling protocol (bidirectional)",
857f62c8
DM		 183 { action => 'PARAM', proto => '47' },
184 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' },
185 ],
186 'Git' => [
ebd54ae9 187 "Git distributed revision control traffic",
857f62c8
DM		 188 { action => 'PARAM', proto => 'tcp', dport => '9418' },
189 ],
857f62c8 190 'HKP' => [
ebd54ae9 191 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 192 { action => 'PARAM', proto => 'tcp', dport => '11371' },
193 ],
194 'HTTP' => [
ebd54ae9 195 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 196 { action => 'PARAM', proto => 'tcp', dport => '80' },
197 ],
857f62c8 198 'HTTPS' => [
ebd54ae9 199 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 200 { action => 'PARAM', proto => 'tcp', dport => '443' },
201 ],
202 'ICPV2' => [
ebd54ae9 203 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 204 { action => 'PARAM', proto => 'udp', dport => '3130' },
205 ],
206 'ICQ' => [
ebd54ae9 207 "AOL Instant Messenger traffic",
857f62c8
DM		 208 { action => 'PARAM', proto => 'tcp', dport => '5190' },
209 ],
210 'IMAP' => [
ebd54ae9 211 "Internet Message Access Protocol",
857f62c8
DM		 212 { action => 'PARAM', proto => 'tcp', dport => '143' },
213 ],
214 'IMAPS' => [
ebd54ae9 215 "Internet Message Access Protocol over SSL",
857f62c8
DM		 216 { action => 'PARAM', proto => 'tcp', dport => '993' },
217 ],
218 'IPIP' => [
ebd54ae9 219 "IPIP capsulation traffic (bidirectional)",
857f62c8
DM		 220 { action => 'PARAM', proto => '94' },
221 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '94' },
222 ],
857f62c8 223 'IPsec' => [
ebd54ae9 224 "IPsec traffic (bidirectional)",
857f62c8
DM		 225 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
226 { action => 'PARAM', proto => '50' },
227 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' },
228 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' },
229 ],
230 'IPsecah' => [
ebd54ae9 231 "IPsec authentication (AH) traffic (bidirectional)",
857f62c8
DM		 232 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
233 { action => 'PARAM', proto => '51' },
234 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' },
235 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '51' },
236 ],
237 'IPsecnat' => [
ebd54ae9 238 "IPsec traffic and Nat-Traversal (bidirectional)",
857f62c8
DM		 239 { action => 'PARAM', proto => 'udp', dport => '500' },
240 { action => 'PARAM', proto => 'udp', dport => '4500' },
241 { action => 'PARAM', proto => '50' },
242 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500' },
243 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '4500' },
244 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' },
245 ],
246 'IRC' => [
ebd54ae9 247 "Internet Relay Chat traffic",
857f62c8
DM		 248 { action => 'PARAM', proto => 'tcp', dport => '6667' },
249 ],
857f62c8 250 'Jetdirect' => [
ebd54ae9 251 "HP Jetdirect printing",
857f62c8
DM		 252 { action => 'PARAM', proto => 'tcp', dport => '9100' },
253 ],
254 'L2TP' => [
ebd54ae9 255 "Layer 2 Tunneling Protocol traffic",
857f62c8
DM		 256 { action => 'PARAM', proto => 'udp', dport => '1701' },
257 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1701' },
258 ],
259 'LDAP' => [
ebd54ae9 260 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 261 { action => 'PARAM', proto => 'tcp', dport => '389' },
262 ],
263 'LDAPS' => [
ebd54ae9 264 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 265 { action => 'PARAM', proto => 'tcp', dport => '636' },
266 ],
267 'MSNP' => [
ebd54ae9 268 "Microsoft Notification Protocol",
857f62c8
DM		 269 { action => 'PARAM', proto => 'tcp', dport => '1863' },
270 ],
271 'MSSQL' => [
ebd54ae9 272 "Microsoft SQL Server",
857f62c8
DM		 273 { action => 'PARAM', proto => 'tcp', dport => '1433' },
274 ],
275 'Mail' => [
ebd54ae9 276 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 277 { action => 'PARAM', proto => 'tcp', dport => '25' },
278 { action => 'PARAM', proto => 'tcp', dport => '465' },
279 { action => 'PARAM', proto => 'tcp', dport => '587' },
280 ],
281 'Munin' => [
ebd54ae9 282 "Munin networked resource monitoring traffic",
857f62c8
DM		 283 { action => 'PARAM', proto => 'tcp', dport => '4949' },
284 ],
285 'MySQL' => [
ebd54ae9 286 "MySQL server",
857f62c8
DM		 287 { action => 'PARAM', proto => 'tcp', dport => '3306' },
288 ],
289 'NNTP' => [
ebd54ae9 290 "NNTP traffic (Usenet).",
857f62c8
DM		 291 { action => 'PARAM', proto => 'tcp', dport => '119' },
292 ],
293 'NNTPS' => [
ebd54ae9 294 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 295 { action => 'PARAM', proto => 'tcp', dport => '563' },
296 ],
297 'NTP' => [
ebd54ae9 298 "Network Time Protocol (ntpd)",
857f62c8
DM		 299 { action => 'PARAM', proto => 'udp', dport => '123' },
300 ],
301 'NTPbi' => [
ebd54ae9 302 "Bi-directional NTP (for NTP peers)",
857f62c8
DM		 303 { action => 'PARAM', proto => 'udp', dport => '123' },
304 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '123' },
305 ],
857f62c8 306 'OSPF' => [
ebd54ae9 307 "OSPF multicast traffic",
857f62c8
DM		 308 { action => 'PARAM', proto => '89' },
309 ],
310 'OpenVPN' => [
ebd54ae9 311 "OpenVPN traffic",
857f62c8
DM		 312 { action => 'PARAM', proto => 'udp', dport => '1194' },
313 ],
314 'PCA' => [
ebd54ae9 315 "Symantec PCAnywere (tm)",
857f62c8
DM		 316 { action => 'PARAM', proto => 'udp', dport => '5632' },
317 { action => 'PARAM', proto => 'tcp', dport => '5631' },
318 ],
319 'POP3' => [
ebd54ae9 320 "POP3 traffic",
857f62c8
DM		 321 { action => 'PARAM', proto => 'tcp', dport => '110' },
322 ],
323 'POP3S' => [
ebd54ae9 324 "Encrypted POP3 traffic",
857f62c8
DM		 325 { action => 'PARAM', proto => 'tcp', dport => '995' },
326 ],
327 'PPtP' => [
ebd54ae9 328 "Point-to-Point Tunneling Protocol",
857f62c8
DM		 329 { action => 'PARAM', proto => '47' },
330 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' },
331 { action => 'PARAM', proto => 'tcp', dport => '1723' },
332 ],
333 'Ping' => [
ebd54ae9 334 "ICMP echo request",
269d4f13 335 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 336 ],
337 'PostgreSQL' => [
ebd54ae9 338 "PostgreSQL server",
857f62c8
DM		 339 { action => 'PARAM', proto => 'tcp', dport => '5432' },
340 ],
341 'Printer' => [
ebd54ae9 342 "Line Printer protocol printing",
857f62c8
DM		 343 { action => 'PARAM', proto => 'tcp', dport => '515' },
344 ],
345 'RDP' => [
ebd54ae9 346 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 347 { action => 'PARAM', proto => 'tcp', dport => '3389' },
348 ],
349 'RIPbi' => [
ebd54ae9 350 "Routing Information Protocol (bidirectional)",
857f62c8
DM		 351 { action => 'PARAM', proto => 'udp', dport => '520' },
352 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '520' },
353 ],
354 'RNDC' => [
ebd54ae9 355 "BIND remote management protocol",
857f62c8
DM		 356 { action => 'PARAM', proto => 'tcp', dport => '953' },
357 ],
358 'Razor' => [
ebd54ae9 359 "Razor Antispam System",
857f62c8
DM		 360 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
361 ],
362 'Rdate' => [
ebd54ae9 363 "Remote time retrieval (rdate)",
857f62c8
DM		 364 { action => 'PARAM', proto => 'tcp', dport => '37' },
365 ],
366 'Rsync' => [
ebd54ae9 367 "Rsync server",
857f62c8
DM		 368 { action => 'PARAM', proto => 'tcp', dport => '873' },
369 ],
370 'SANE' => [
ebd54ae9 371 "SANE network scanning",
857f62c8
DM		 372 { action => 'PARAM', proto => 'tcp', dport => '6566' },
373 ],
374 'SMB' => [
ebd54ae9 375 "Microsoft SMB traffic",
857f62c8
DM		 376 { action => 'PARAM', proto => 'udp', dport => '135,445' },
377 { action => 'PARAM', proto => 'udp', dport => '137:139' },
378 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
379 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
380 ],
381 'SMBBI' => [
ebd54ae9 382 "Microsoft SMB traffic (bidirectional)",
857f62c8
DM		 383 { action => 'PARAM', proto => 'udp', dport => '135,445' },
384 { action => 'PARAM', proto => 'udp', dport => '137:139' },
385 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
386 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
387 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '135,445' },
388 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '137:139' },
389 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1024:65535', sport => '137' },
390 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'tcp', dport => '135,139,445' },
391 ],
392 'SMBswat' => [
ebd54ae9 393 "Samba Web Administration Tool",
857f62c8
DM		 394 { action => 'PARAM', proto => 'tcp', dport => '901' },
395 ],
396 'SMTP' => [
ebd54ae9 397 "Simple Mail Transfer Protocol",
857f62c8
DM		 398 { action => 'PARAM', proto => 'tcp', dport => '25' },
399 ],
400 'SMTPS' => [
ebd54ae9 401 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 402 { action => 'PARAM', proto => 'tcp', dport => '465' },
403 ],
404 'SNMP' => [
ebd54ae9 405 "Simple Network Management Protocol",
857f62c8
DM		 406 { action => 'PARAM', proto => 'udp', dport => '161:162' },
407 { action => 'PARAM', proto => 'tcp', dport => '161' },
408 ],
409 'SPAMD' => [
ebd54ae9 410 "Spam Assassin SPAMD traffic",
857f62c8
DM		 411 { action => 'PARAM', proto => 'tcp', dport => '783' },
412 ],
413 'SSH' => [
ebd54ae9 414 "Secure shell traffic",
857f62c8
DM		 415 { action => 'PARAM', proto => 'tcp', dport => '22' },
416 ],
417 'SVN' => [
ebd54ae9 418 "Subversion server (svnserve)",
857f62c8
DM		 419 { action => 'PARAM', proto => 'tcp', dport => '3690' },
420 ],
421 'SixXS' => [
ebd54ae9 422 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 423 { action => 'PARAM', proto => 'tcp', dport => '3874' },
424 { action => 'PARAM', proto => 'udp', dport => '3740' },
425 { action => 'PARAM', proto => '41' },
426 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
427 ],
428 'Squid' => [
ebd54ae9 429 "Squid web proxy traffic",
857f62c8
DM		 430 { action => 'PARAM', proto => 'tcp', dport => '3128' },
431 ],
432 'Submission' => [
ebd54ae9 433 "Mail message submission traffic",
857f62c8
DM		 434 { action => 'PARAM', proto => 'tcp', dport => '587' },
435 ],
436 'Syslog' => [
ebd54ae9 437 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 438 { action => 'PARAM', proto => 'udp', dport => '514' },
439 { action => 'PARAM', proto => 'tcp', dport => '514' },
440 ],
441 'TFTP' => [
ebd54ae9 442 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 443 { action => 'PARAM', proto => 'udp', dport => '69' },
444 ],
445 'Telnet' => [
ebd54ae9 446 "Telnet traffic",
857f62c8
DM		 447 { action => 'PARAM', proto => 'tcp', dport => '23' },
448 ],
449 'Telnets' => [
ebd54ae9 450 "Telnet over SSL",
857f62c8
DM		 451 { action => 'PARAM', proto => 'tcp', dport => '992' },
452 ],
453 'Time' => [
ebd54ae9 454 "RFC 868 Time protocol",
857f62c8
DM		 455 { action => 'PARAM', proto => 'tcp', dport => '37' },
456 ],
457 'Trcrt' => [
ebd54ae9 458 "Traceroute (for up to 30 hops) traffic",
857f62c8 459 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 460 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 461 ],
462 'VNC' => [
ebd54ae9 463 "VNC traffic for VNC display's 0 - 9",
857f62c8
DM		 464 { action => 'PARAM', proto => 'tcp', dport => '5900:5909' },
465 ],
466 'VNCL' => [
ebd54ae9 467 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 468 { action => 'PARAM', proto => 'tcp', dport => '5500' },
469 ],
470 'Web' => [
ebd54ae9 471 "WWW traffic (HTTP and HTTPS)",
857f62c8 472 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 473 { action => 'PARAM', proto => 'tcp', dport => '443' },
474 ],
857f62c8 475 'Webcache' => [
ebd54ae9 476 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 477 { action => 'PARAM', proto => 'tcp', dport => '8080' },
478 ],
479 'Webmin' => [
ebd54ae9 480 "Webmin traffic",
857f62c8
DM		 481 { action => 'PARAM', proto => 'tcp', dport => '10000' },
482 ],
483 'Whois' => [
ebd54ae9 484 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 485 { action => 'PARAM', proto => 'tcp', dport => '43' },
486 ],
961b4928
DM		 487};
488
489my $pve_fw_parsed_macros;
ebd54ae9 490my $pve_fw_macro_descr;
961b4928 491my $pve_fw_preferred_macro_names = {};
3a616aa0 492
d8f2505e
DM		 493my $pve_std_chains = {
494 'PVEFW-SET-ACCEPT-MARK' => [
495 "-j MARK --set-mark 1",
496 ],
79929d9c
DM		 497 'PVEFW-DropBroadcast' => [
498 # same as shorewall 'Broadcast'
499 # simply DROP BROADCAST/MULTICAST/ANYCAST
500 # we can use this to reduce logging
501 { action => 'DROP', dsttype => 'BROADCAST' },
502 { action => 'DROP', dsttype => 'MULTICAST' },
503 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 504 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 505 ],
506 'PVEFW-reject' => [
507 # same as shorewall 'reject'
508 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 509 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c
DM		 510 { action => 'DROP', proto => 'icmp' },
511 "-p tcp -j REJECT --reject-with tcp-reset",
512 "-p udp -j REJECT --reject-with icmp-port-unreachable",
513 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
514 "-j REJECT --reject-with icmp-host-prohibited",
515 ],
516 'PVEFW-Drop' => [
cbb5d6f3 517 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 518 # but REJECT/DROP some packages to reduce logging,
519 # and ACCEPT critical ICMP types
520 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
521 # we are not interested in BROADCAST/MULTICAST/ANYCAST
522 { action => 'PVEFW-DropBroadcast' },
523 # ACCEPT critical ICMP types
524 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
525 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
526 # Drop packets with INVALID state
527 "-m conntrack --ctstate INVALID -j DROP",
528 # Drop Microsoft SMB noise
529 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
530 { action => 'DROP', proto => 'udp', dport => '137:139'},
531 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
532 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
533 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
534 # Drop new/NotSyn traffic so that it doesn't get logged
535 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
536 # Drop DNS replies
537 { action => 'DROP', proto => 'udp', sport => 53 },
538 ],
539 'PVEFW-Reject' => [
cbb5d6f3 540 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 541 # but REJECT/DROP some packages to reduce logging,
542 # and ACCEPT critical ICMP types
543 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
544 # we are not interested in BROADCAST/MULTICAST/ANYCAST
545 { action => 'PVEFW-DropBroadcast' },
546 # ACCEPT critical ICMP types
547 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
548 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
549 # Drop packets with INVALID state
550 "-m conntrack --ctstate INVALID -j DROP",
551 # Drop Microsoft SMB noise
552 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
553 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
554 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
555 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
556 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
557 # Drop new/NotSyn traffic so that it doesn't get logged
558 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
559 # Drop DNS replies
560 { action => 'DROP', proto => 'udp', sport => 53 },
561 ],
d86659ef
DM		 562 'PVEFW-tcpflags' => [
563 # same as shorewall tcpflags action.
564 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
565 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
566 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
567 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
568 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
569 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
570 ],
bee633ab
DM		 571 'PVEFW-smurfs' => [
572 # same as shorewall smurfs action
573 # Filter packets for smurfs (packets with a broadcast address as the source).
574 "-s 0.0.0.0/32 -j RETURN",
575 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
576 "-s 224.0.0.0/4 -g PVEFW-smurflog",
577 ],
d8f2505e
DM		 578};
579
4b586518
DM		 580# iptables -p icmp -h
581my $icmp_type_names = {
582 any => 1,
583 'echo-reply' => 1,
584 'destination-unreachable' => 1,
585 'network-unreachable' => 1,
586 'host-unreachable' => 1,
587 'protocol-unreachable' => 1,
588 'port-unreachable' => 1,
589 'fragmentation-needed' => 1,
590 'source-route-failed' => 1,
591 'network-unknown' => 1,
592 'host-unknown' => 1,
593 'network-prohibited' => 1,
594 'host-prohibited' => 1,
595 'TOS-network-unreachable' => 1,
596 'TOS-host-unreachable' => 1,
597 'communication-prohibited' => 1,
598 'host-precedence-violation' => 1,
599 'precedence-cutoff' => 1,
600 'source-quench' => 1,
601 'redirect' => 1,
602 'network-redirect' => 1,
603 'host-redirect' => 1,
604 'TOS-network-redirect' => 1,
605 'TOS-host-redirect' => 1,
606 'echo-request' => 1,
607 'router-advertisement' => 1,
608 'router-solicitation' => 1,
609 'time-exceeded' => 1,
610 'ttl-zero-during-transit' => 1,
611 'ttl-zero-during-reassembly' => 1,
612 'parameter-problem' => 1,
613 'ip-header-bad' => 1,
614 'required-option-missing' => 1,
615 'timestamp-request' => 1,
616 'timestamp-reply' => 1,
617 'address-mask-request' => 1,
618 'address-mask-reply' => 1,
619};
620
54cd19a8 621sub init_firewall_macros {
6158271d 622
961b4928 623 $pve_fw_parsed_macros = {};
9aab3127 624
961b4928 625 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 626 my $lc_name = lc($k);
627 my $macro = $pve_fw_macros->{$k};
ebd54ae9
DM		 628 if (!ref($macro->[0])) {
629 $pve_fw_macro_descr->{$k} = shift @$macro;
630 }
e5076eee
DM		 631 $pve_fw_preferred_macro_names->{$lc_name} = $k;
632 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 633 }
9aab3127
DM		 634}
635
54cd19a8
DM		 636init_firewall_macros();
637
ebd54ae9
DM		 638sub get_macros {
639 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
640}
641
fcba0beb
DM		 642my $etc_services;
643
644sub get_etc_services {
645
646 return $etc_services if $etc_services;
647
648 my $filename = "/etc/services";
649
650 my $fh = IO::File->new($filename, O_RDONLY);
651 if (!$fh) {
652 warn "unable to read '$filename' - $!\n";
653 return {};
654 }
655
656 my $services = {};
657
658 while (my $line = <$fh>) {
659 chomp ($line);
660 next if $line =~m/^#/;
661 next if ($line =~m/^\s*$/);
662
663 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
664 $services->{byid}->{$2}->{name} = $1;
35b66e9d 665 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 666 $services->{byid}->{$2}->{$3} = 1;
667 $services->{byname}->{$1} = $services->{byid}->{$2};
668 }
669 }
670
671 close($fh);
672
6158271d
DM		 673 $etc_services = $services;
674
3a616aa0 675
fcba0beb
DM		 676 return $etc_services;
677}
678
679my $etc_protocols;
680
681sub get_etc_protocols {
682 return $etc_protocols if $etc_protocols;
683
684 my $filename = "/etc/protocols";
685
686 my $fh = IO::File->new($filename, O_RDONLY);
687 if (!$fh) {
688 warn "unable to read '$filename' - $!\n";
689 return {};
690 }
691
692 my $protocols = {};
693
694 while (my $line = <$fh>) {
695 chomp ($line);
696 next if $line =~m/^#/;
697 next if ($line =~m/^\s*$/);
698
699 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
700 $protocols->{byid}->{$2}->{name} = $1;
701 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
702 }
703 }
704
705 close($fh);
706
707 $etc_protocols = $protocols;
708
709 return $etc_protocols;
710}
711
ecbea048
DM		 712sub parse_address_list {
713 my ($str) = @_;
714
28311400 715 return if $str =~ m/^(\+)(\S+)$/; # ipset ref
44be8ceb 716 return if $str =~ m/^${ip_alias_pattern}$/;
d72beb8e 717
3162af6b
DM		 718 my $count = 0;
719 my $iprange = 0;
720 foreach my $elem (split(/,/, $str)) {
721 $count++;
722 if (!Net::IP->new($elem)) {
ecbea048
DM		 723 my $err = Net::IP::Error();
724 die "invalid IP address: $err\n";
725 }
3162af6b 726 $iprange = 1 if $elem =~ m/-/;
ecbea048 727 }
3162af6b
DM		 728
729 die "you can use a range in a list\n" if $iprange && $count > 1;
ecbea048 730}
dddd9413 731
fcba0beb
DM		 732sub parse_port_name_number_or_range {
733 my ($str) = @_;
734
735 my $services = PVE::Firewall::get_etc_services();
7ca36671 736 my $count = 0;
041b7e8e
DM		 737 my $icmp_port = 0;
738
fcba0beb 739 foreach my $item (split(/,/, $str)) {
7ca36671
DM		 740 $count++;
741 if ($item =~ m/^(\d+):(\d+)$/) {
742 my ($port1, $port2) = ($1, $2);
743 die "invalid port '$port1'\n" if $port1 > 65535;
744 die "invalid port '$port2'\n" if $port2 > 65535;
745 } elsif ($item =~ m/^(\d+)$/) {
746 my $port = $1;
747 die "invalid port '$port'\n" if $port > 65535;
748 } else {
041b7e8e
DM		 749 if ($icmp_type_names->{$item}) {
750 $icmp_port = 1;
751 } else {
752 die "invalid port '$item'\n" if !$services->{byname}->{$item};
753 }
fcba0beb
DM		 754 }
755 }
756
041b7e8e
DM		 757 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
758
7ca36671 759 return $count;
fcba0beb
DM		 760}
761
54cd19a8
DM		 762PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
763sub pve_fw_verify_port_spec {
764 my ($portstr) = @_;
765
7ca36671 766 parse_port_name_number_or_range($portstr);
54cd19a8
DM		 767
768 return $portstr;
769}
770
771PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec);
772sub pve_fw_verify_v4addr_spec {
773 my ($list) = @_;
774
775 parse_address_list($list);
776
777 return $list;
778}
779
780PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
781sub pve_fw_verify_protocol_spec {
782 my ($proto) = @_;
783
784 my $protocols = get_etc_protocols();
785
786 die "unknown protocol '$proto'\n" if $proto &&
787 !(defined($protocols->{byname}->{$proto}) ||
788 defined($protocols->{byid}->{$proto}));
789
790 return $proto;
791}
792
793
d1c53b3e 794# helper function for API
d1c53b3e 795
5d38d64f
DM		 796sub copy_opject_with_digest {
797 my ($object) = @_;
798
799 my $sha = Digest::SHA->new('sha1');
800
801 my $res = {};
802 foreach my $k (sort keys %$object) {
803 my $v = $object->{$k};
0365eb68 804 next if !defined($v);
5d38d64f
DM		 805 $res->{$k} = $v;
806 $sha->add($k, ':', $v, "\n");
807 }
808
809 my $digest = $sha->b64digest;
810
811 $res->{digest} = $digest;
812
813 return wantarray ? ($res, $digest) : $res;
814}
815
816sub copy_list_with_digest {
817 my ($list) = @_;
818
819 my $sha = Digest::SHA->new('sha1');
820
821 my $res = [];
822 foreach my $entry (@$list) {
823 my $data = {};
824 foreach my $k (sort keys %$entry) {
825 my $v = $entry->{$k};
0365eb68 826 next if !defined($v);
5d38d64f
DM		 827 $data->{$k} = $v;
828 $sha->add($k, ':', $v, "\n");
829 }
830 push @$res, $data;
831 }
832
833 my $digest = $sha->b64digest;
834
835 foreach my $entry (@$res) {
836 $entry->{digest} = $digest;
837 }
838
839 return wantarray ? ($res, $digest) : $res;
840}
841
9c7e0858
DM		 842my $rule_properties = {
843 pos => {
844 description => "Update rule at position <pos>.",
845 type => 'integer',
846 minimum => 0,
847 optional => 1,
848 },
c71e785f 849 digest => get_standard_option('pve-config-digest'),
9c7e0858
DM		 850 type => {
851 type => 'string',
852 optional => 1,
853 enum => ['in', 'out', 'group'],
854 },
855 action => {
c14dacdf 856 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 857 type => 'string',
858 optional => 1,
44be8ceb 859 pattern => $security_group_name_pattern,
c14dacdf
DM		 860 maxLength => 20,
861 minLength => 2,
9c7e0858 862 },
e5076eee
DM		 863 macro => {
864 type => 'string',
865 optional => 1,
54cd19a8 866 maxLength => 128,
e5076eee 867 },
54cd19a8 868 iface => get_standard_option('pve-iface', { optional => 1 }),
9c7e0858 869 source => {
54cd19a8 870 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 871 optional => 1,
872 },
873 dest => {
54cd19a8 874 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 875 optional => 1,
876 },
877 proto => {
54cd19a8 878 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 879 optional => 1,
880 },
881 enable => {
882 type => 'boolean',
883 optional => 1,
884 },
885 sport => {
54cd19a8 886 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 887 optional => 1,
888 },
889 dport => {
54cd19a8 890 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 891 optional => 1,
892 },
893 comment => {
894 type => 'string',
895 optional => 1,
896 },
897};
898
899sub add_rule_properties {
900 my ($properties) = @_;
901
902 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 903 my $h = $rule_properties->{$k};
904 # copy data, so that we can modify later without side effects
905 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 906 }
cbb5d6f3 907
9c7e0858
DM		 908 return $properties;
909}
910
5b7974df
DM		 911sub delete_rule_properties {
912 my ($rule, $delete_str) = @_;
913
914 foreach my $opt (PVE::Tools::split_list($delete_str)) {
915 raise_param_exc({ 'delete' => "no such property ('$opt')"})
916 if !defined($rule_properties->{$opt});
917 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
918 if $opt eq 'type' || $opt eq 'action';
919 delete $rule->{$opt};
920 }
921
922 return $rule;
923}
924
9a2745a0
DM		 925my $apply_macro = sub {
926 my ($macro_name, $param, $verify) = @_;
927
928 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
929 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
930
931 my $rules = [];
932
933 foreach my $templ (@$macro_rules) {
934 my $rule = {};
935 my $param_used = {};
936 foreach my $k (keys %$templ) {
937 my $v = $templ->{$k};
938 if ($v eq 'PARAM') {
939 $v = $param->{$k};
940 $param_used->{$k} = 1;
941 } elsif ($v eq 'DEST') {
942 $v = $param->{dest};
943 $param_used->{dest} = 1;
944 } elsif ($v eq 'SOURCE') {
945 $v = $param->{source};
946 $param_used->{source} = 1;
947 }
948
949 if (!defined($v)) {
950 my $msg = "missing parameter '$k' in macro '$macro_name'";
951 raise_param_exc({ macro => $msg }) if $verify;
952 die "$msg\n";
953 }
954 $rule->{$k} = $v;
955 }
956 foreach my $k (keys %$param) {
957 next if $k eq 'macro';
958 next if !defined($param->{$k});
959 next if $param_used->{$k};
960 if (defined($rule->{$k})) {
961 if ($rule->{$k} ne $param->{$k}) {
962 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
963 raise_param_exc({ $k => $msg }) if $verify;
964 die "$msg\n";
965 }
966 } else {
967 $rule->{$k} = $param->{$k};
968 }
969 }
970 push @$rules, $rule;
971 }
972
973 return $rules;
974};
975
7ca36671
DM		 976sub verify_rule {
977 my ($rule, $allow_groups) = @_;
978
979 my $type = $rule->{type};
980
981 raise_param_exc({ type => "missing property"}) if !$type;
982 raise_param_exc({ action => "missing property"}) if !$rule->{action};
983
984 if ($type eq 'in' || $type eq 'out') {
985 raise_param_exc({ action => "unknown action '$rule->{action}'"})
986 if $rule->{action} !~ m/^(ACCEPT|DROP|REJECT)$/;
987 } elsif ($type eq 'group') {
988 raise_param_exc({ type => "security groups not allowed"})
989 if !$allow_groups;
990 raise_param_exc({ action => "invalid characters in security group name"})
44be8ceb 991 if $rule->{action} !~ m/^${security_group_name_pattern}$/;
7ca36671
DM		 992 } else {
993 raise_param_exc({ type => "unknown rule type '$type'"});
994 }
995
996 # fixme: verify $rule->{iface}?
997
998 if ($rule->{macro}) {
999 my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})};
1000 raise_param_exc({ macro => "unknown macro '$rule->{macro}'"}) if !$preferred_name;
1001 $rule->{macro} = $preferred_name;
1002 }
1003
1004 if ($rule->{dport}) {
1005 eval { parse_port_name_number_or_range($rule->{dport}); };
1006 raise_param_exc({ dport => $@ }) if $@;
1007 }
1008
1009 if ($rule->{sport}) {
1010 eval { parse_port_name_number_or_range($rule->{sport}); };
1011 raise_param_exc({ sport => $@ }) if $@;
1012 }
1013
1014 if ($rule->{source}) {
1015 eval { parse_address_list($rule->{source}); };
1016 raise_param_exc({ source => $@ }) if $@;
1017 }
1018
1019 if ($rule->{dest}) {
1020 eval { parse_address_list($rule->{dest}); };
1021 raise_param_exc({ dest => $@ }) if $@;
1022 }
1023
9a2745a0
DM		 1024 if ($rule->{macro}) {
1025 &$apply_macro($rule->{macro}, $rule, 1);
1026 }
1027
7ca36671
DM		 1028 return $rule;
1029}
1030
9c7e0858
DM		 1031sub copy_rule_data {
1032 my ($rule, $param) = @_;
1033
1034 foreach my $k (keys %$rule_properties) {
1035 if (defined(my $v = $param->{$k})) {
1036 if ($v eq '' || $v eq '-') {
1037 delete $rule->{$k};
1038 } else {
1039 $rule->{$k} = $v;
1040 }
1041 } else {
1042 delete $rule->{$k};
1043 }
1044 }
7ca36671
DM		 1045
1046 # verify rule now
1047
9c7e0858
DM		 1048 return $rule;
1049}
1050
1051# core functions
780bcc0f
DM		 1052my $bridge_firewall_enabled = 0;
1053
1054sub enable_bridge_firewall {
1055
1056 return if $bridge_firewall_enabled; # only once
1057
5f0a912c
DM		 1058 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1059 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1060
6a8a75db
DM		 1061 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1062 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1063
780bcc0f
DM		 1064 $bridge_firewall_enabled = 1;
1065}
1066
8cebfa6f 1067my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 1068
b16e818e
DM		 1069sub iptables_restore_cmdlist {
1070 my ($cmdlist) = @_;
3a616aa0 1071
3fa83edf 1072 run_command("/sbin/iptables-restore -n", input => $cmdlist);
3a616aa0
AD		 1073}
1074
34cdedfa
AD		 1075sub ipset_restore_cmdlist {
1076 my ($cmdlist) = @_;
1077
dd7a13fd 1078 run_command("/usr/sbin/ipset restore", input => $cmdlist);
34cdedfa
AD		 1079}
1080
de2a57cd
DM		 1081sub iptables_get_chains {
1082
1083 my $res = {};
1084
1085 # check what chains we want to track
1086 my $is_pvefw_chain = sub {
1087 my $name = shift;
1088
dec84fcd
DM		 1089 return 1 if $name =~ m/^PVEFW-\S+$/;
1090
de2a57cd 1091 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 1092
1093 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1094
9e15114a
DM		 1095 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1096
1f94c9b5 1097 return 1 if $name =~ m/^vmbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
f50656c2 1098 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 1099
1100 return undef;
1101 };
1102
1103 my $table = '';
1104
c4a2e5ae
DM		 1105 my $hooks = {};
1106
de2a57cd
DM		 1107 my $parser = sub {
1108 my $line = shift;
1109
1110 return if $line =~ m/^#/;
1111 return if $line =~ m/^\s*$/;
1112
1113 if ($line =~ m/^\*(\S+)$/) {
1114 $table = $1;
1115 return;
1116 }
1117
1118 return if $table ne 'filter';
1119
1120 if ($line =~ m/^:(\S+)\s/) {
1121 my $chain = $1;
1122 return if !&$is_pvefw_chain($chain);
3fa83edf 1123 $res->{$chain} = "unknown";
09d5f68e 1124 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1125 my ($chain, $sig) = ($1, $2);
de2a57cd 1126 return if !&$is_pvefw_chain($chain);
3fa83edf 1127 $res->{$chain} = $sig;
c4a2e5ae
DM		 1128 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1129 $hooks->{$1} = 1;
de2a57cd
DM		 1130 } else {
1131 # simply ignore the rest
1132 return;
1133 }
1134 };
1135
1136 run_command("/sbin/iptables-save", outfunc => $parser);
1137
c4a2e5ae 1138 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1139}
1140
9bf7d929
DM		 1141sub iptables_chain_digest {
1142 my ($rules) = @_;
1143 my $digest = Digest::SHA->new('sha1');
1144 foreach my $rule (@$rules) { # order is important
1145 $digest->add($rule);
1146 }
1147 return $digest->b64digest;
1148}
1149
3f95d14a
DM		 1150sub ipset_chain_digest {
1151 my ($rules) = @_;
4bd0a9c4 1152
3f95d14a
DM		 1153 my $digest = Digest::SHA->new('sha1');
1154 foreach my $rule (sort @$rules) { # note: sorted
1155 $digest->add($rule);
1156 }
1157 return $digest->b64digest;
1158}
1159
34cdedfa
AD		 1160sub ipset_get_chains {
1161
1162 my $res = {};
1163 my $chains = {};
1164
1165 my $parser = sub {
1166 my $line = shift;
1167
1168 return if $line =~ m/^#/;
1169 return if $line =~ m/^\s*$/;
4b96e877 1170 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1171 my $chain = $1;
1172 $line =~ s/\s+$//; # delete trailing white space
1173 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1174 } else {
1175 # simply ignore the rest
1176 return;
1177 }
1178 };
1179
3f95d14a 1180 run_command("/usr/sbin/ipset save", outfunc => $parser);
34cdedfa 1181
3f95d14a
DM		 1182 # compute digest for each chain
1183 foreach my $chain (keys %$chains) {
1184 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1185 }
1186
1187 return $res;
1188}
1189
eba0fb64 1190sub ruleset_generate_cmdstr {
ba791b1f 1191 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
3a616aa0 1192
00bb4391 1193 return if defined($rule->{enable}) && !$rule->{enable};
11bac5c2 1194
e5076eee
DM		 1195 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1196
1197 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
1198 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
e5076eee 1199
41524a58 1200 my @cmd = ();
3a616aa0 1201
eba0fb64
DM		 1202 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1203 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1204
ba791b1f
AD		 1205 my $source = $rule->{source};
1206 my $dest = $rule->{dest};
1207
cbb5d6f3 1208 if ($source) {
44be8ceb
DM		 1209 if ($source =~ m/^\+/) {
1210 if ($source =~ m/^\+(${security_group_name_pattern})$/) {
1211 die "no such ipset '$1'\n" if !$cluster_conf->{ipset}->{$1};
1212 push @cmd, "-m set --match-set PVEFW-$1 src";
1213 } else {
1214 die "invalid security group name '$source'\n";
1215 }
1216 } elsif ($source =~ m/^${ip_alias_pattern}$/){
1217 die "no such alias $source\n" if !$cluster_conf->{aliases}->{$source};
92e1209b
AD		 1218 push @cmd, "-s $cluster_conf->{aliases}->{$source}";
1219
ac8242cc 1220 } elsif ($source =~ m/\-/){
ba791b1f
AD		 1221 push @cmd, "-m iprange --src-range $source";
1222
cbb5d6f3 1223 } else {
ba791b1f
AD		 1224 push @cmd, "-s $source";
1225 }
1226 }
1227
cbb5d6f3 1228 if ($dest) {
44be8ceb
DM		 1229 if ($dest =~ m/^\+/) {
1230 if ($dest =~ m/^\+(${security_group_name_pattern})$/) {
1231 die "no such ipset '$1'\n" if !$cluster_conf->{ipset}->{$1};
1232 push @cmd, "-m set --match-set PVEFW-$1 dst";
1233 } else {
1234 die "invalid security group name '$dest'\n";
1235 }
1236 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
92e1209b
AD		 1237 die "no such alias $dest" if !$cluster_conf->{aliases}->{$dest};
1238 push @cmd, "-d $cluster_conf->{aliases}->{$dest}";
1239
cbb5d6f3 1240 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
ba791b1f
AD		 1241 push @cmd, "-m iprange --dst-range $dest";
1242
cbb5d6f3 1243 } else {
d6d2a385 1244 push @cmd, "-d $dest";
ba791b1f
AD		 1245 }
1246 }
4b586518 1247
181390b0 1248 if ($rule->{proto}) {
41524a58 1249 push @cmd, "-p $rule->{proto}";
e3a1d391 1250
181390b0 1251 my $multiport = 0;
e5076eee
DM		 1252 $multiport++ if $nbdport > 1;
1253 $multiport++ if $nbsport > 1;
e3a1d391 1254
41524a58 1255 push @cmd, "--match multiport" if $multiport;
4b586518 1256
cbb5d6f3 1257 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1258 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1259
1260 if ($rule->{dport}) {
1261 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
1262 # Note: we use dport to store --icmp-type
1263 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 1264 push @cmd, "-m icmp --icmp-type $rule->{dport}";
181390b0 1265 } else {
e5076eee 1266 if ($nbdport > 1) {
181390b0 1267 if ($multiport == 2) {
41524a58 1268 push @cmd, "--ports $rule->{dport}";
181390b0 1269 } else {
41524a58 1270 push @cmd, "--dports $rule->{dport}";
181390b0 1271 }
e3a1d391 1272 } else {
41524a58 1273 push @cmd, "--dport $rule->{dport}";
e3a1d391 1274 }
4b586518
DM		 1275 }
1276 }
4b586518 1277
181390b0 1278 if ($rule->{sport}) {
e5076eee 1279 if ($nbsport > 1) {
41524a58 1280 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 1281 } else {
41524a58 1282 push @cmd, "--sport $rule->{sport}";
181390b0 1283 }
4b586518 1284 }
181390b0
DM		 1285 } elsif ($rule->{dport} || $rule->{sport}) {
1286 warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport};
1287 warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport};
4b586518
DM		 1288 }
1289
41524a58 1290 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 1291
1292 if (my $action = $rule->{action}) {
cbb5d6f3 1293 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 1294 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 1295 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 1296 }
3a616aa0 1297
eba0fb64
DM		 1298 return scalar(@cmd) ? join(' ', @cmd) : undef;
1299}
1300
1301sub ruleset_generate_rule {
ba791b1f 1302 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
eba0fb64 1303
e5076eee
DM		 1304 my $rules;
1305
1306 if ($rule->{macro}) {
1307 $rules = &$apply_macro($rule->{macro}, $rule);
1308 } else {
1309 $rules = [ $rule ];
1310 }
1311
d4091b82
DM		 1312 # update all or nothing
1313
1314 my @cmds = ();
cbb5d6f3 1315 foreach my $tmp (@$rules) {
ba791b1f 1316 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) {
d4091b82 1317 push @cmds, $cmdstr;
e5076eee 1318 }
41524a58 1319 }
d4091b82
DM		 1320
1321 foreach my $cmdstr (@cmds) {
1322 ruleset_addrule($ruleset, $chain, $cmdstr);
1323 }
3fa83edf 1324}
0f168d7b 1325
eba0fb64
DM		 1326sub ruleset_generate_rule_insert {
1327 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1328
e5076eee
DM		 1329 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1330
eba0fb64
DM		 1331 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
1332 ruleset_insertrule($ruleset, $chain, $cmdstr);
1333 }
1334}
3fa83edf
DM		 1335
1336sub ruleset_create_chain {
1337 my ($ruleset, $chain) = @_;
3a616aa0 1338
d050c724 1339 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1340 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1341
3fa83edf
DM		 1342 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1343
1344 $ruleset->{$chain} = [];
3a616aa0
AD		 1345}
1346
3fa83edf
DM		 1347sub ruleset_chain_exist {
1348 my ($ruleset, $chain) = @_;
3a616aa0 1349
3fa83edf
DM		 1350 return $ruleset->{$chain} ? 1 : undef;
1351}
3a616aa0 1352
3fa83edf
DM		 1353sub ruleset_addrule {
1354 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1355
3fa83edf 1356 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1357
3fa83edf
DM		 1358 push @{$ruleset->{$chain}}, "-A $chain $rule";
1359}
3a616aa0 1360
3fa83edf
DM		 1361sub ruleset_insertrule {
1362 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1363
3fa83edf 1364 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1365
3fa83edf
DM		 1366 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1367}
3a616aa0 1368
782c4cde
DM		 1369sub get_log_rule_base {
1370 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1371
782c4cde
DM		 1372 die "internal error - no log level" if !defined($loglevel);
1373
1374 $vmid = 0 if !defined($vmid);
1375
cbb5d6f3 1376 # Note: we use special format for prefix to pass further
782c4cde
DM		 1377 # info to log daemon (VMID, LOGVELEL and CHAIN)
1378
1379 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1380}
1381
1382sub ruleset_addlog {
1383 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1384
1385 return if !defined($loglevel);
1386
1387 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1388
1389 $logrule = "$rule $logrule" if defined($rule);
1390
1391 ruleset_addrule($ruleset, $chain, $logrule)
1392}
1393
3fa83edf 1394sub generate_bridge_chains {
1a301a8d 1395 my ($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config) = @_;
530c005e
DM		 1396
1397 my $options = $hostfw_conf->{options} || {};
1398
1399 die "error: detected direct route to bridge '$bridge'\n"
1400 if !$options->{allow_bridge_route} && $routing_table->{$bridge};
2f3d8d76 1401
5927497d
DM		 1402 if (!ruleset_chain_exist($ruleset, "$bridge-FW")) {
1403 ruleset_create_chain($ruleset, "$bridge-FW");
3cc81077
DM		 1404 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW");
1405 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW");
3fa83edf 1406 }
3a616aa0 1407
3fa83edf
DM		 1408 if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) {
1409 ruleset_create_chain($ruleset, "$bridge-OUT");
1a301a8d
AD		 1410
1411 if($options->{optimize}){
1412 foreach my $interface (@{$bridges_config->{$bridge}}) {
1413 ruleset_addrule($ruleset, "$bridge-OUT", "-m physdev --physdev-is-bridged --physdev-in $interface -g PVEFW-SET-ACCEPT-MARK");
1414 }
1415 }
1416
3cc81077
DM		 1417 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT");
1418 ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT");
9fcad984
AD		 1419 }
1420
1421 if (!ruleset_chain_exist($ruleset, "$bridge-IN")) {
1422 ruleset_create_chain($ruleset, "$bridge-IN");
1a301a8d
AD		 1423
1424 if($options->{optimize}){
1425 foreach my $interface (@{$bridges_config->{$bridge}}) {
1426 ruleset_addrule($ruleset, "$bridge-IN", "-m physdev --physdev-is-bridged --physdev-out $interface -j ACCEPT");
1427 }
1428 }
1429
3cc81077 1430 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN");
fdb0bf20 1431 ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT");
7323008d 1432 # accept traffic to unmanaged bridge ports
3cc81077 1433 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT ");
3fa83edf
DM		 1434 }
1435}
3a616aa0 1436
ead850e8 1437sub ruleset_add_chain_policy {
782c4cde 1438 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1439
1440 if ($policy eq 'ACCEPT') {
1441
1442 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1443 { ACCEPT => $accept_action});
1444
1445 } elsif ($policy eq 'DROP') {
1446
1447 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1448
782c4cde 1449 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1450
1451 ruleset_addrule($ruleset, $chain, "-j DROP");
1452 } elsif ($policy eq 'REJECT') {
1453 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1454
782c4cde 1455 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1456
1457 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1458 } else {
1459 # should not happen
1460 die "internal error: unknown policy '$policy'";
1461 }
1462}
1463
9e15114a 1464sub ruleset_create_vm_chain {
6bafd113 1465 my ($ruleset, $chain, $options, $host_options, $macaddr, $direction) = @_;
3a616aa0 1466
9e15114a 1467 ruleset_create_chain($ruleset, $chain);
b47ecc88 1468 my $accept = generate_nfqueue($options);
3a616aa0 1469
6bafd113 1470 if (!(defined($host_options->{nosmurfs}) && $host_options->{nosmurfs} == 0)) {
9e15114a 1471 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
bee633ab
DM		 1472 }
1473
ce15d90b 1474 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1475 if ($direction eq 'OUT') {
cbb5d6f3 1476 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
0f168d7b 1477 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1478 } else {
cbb5d6f3 1479 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
0f168d7b 1480 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1481 }
ce15d90b
DM		 1482 }
1483
6bafd113 1484 if ($host_options->{tcpflags}) {
9e15114a 1485 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
bee633ab
DM		 1486 }
1487
9e15114a 1488 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
cbb5d6f3 1489 if ($direction eq 'OUT') {
b47ecc88 1490 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK");
cbb5d6f3 1491 } else {
b47ecc88
AD		 1492 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1493 }
cbb5d6f3 1494
b21aca2c
DM		 1495 if ($direction eq 'OUT') {
1496 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1497 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1498 }
9e15114a 1499 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1500 }
9e15114a
DM		 1501}
1502
1503sub ruleset_generate_vm_rules {
fca39c2c 1504 my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_;
9e15114a
DM		 1505
1506 my $lc_direction = lc($direction);
c29f55c9 1507
6b8ca015
DM		 1508 my $in_accept = generate_nfqueue($options);
1509
92e976b3
DM		 1510 foreach my $rule (@$rules) {
1511 next if $rule->{iface} && $rule->{iface} ne $netid;
ea9e5116 1512 next if !$rule->{enable};
92e976b3 1513 if ($rule->{type} eq 'group') {
cbb5d6f3 1514 my $group_chain = "GROUP-$rule->{action}-$direction";
92e976b3 1515 if(!ruleset_chain_exist($ruleset, $group_chain)){
fca39c2c 1516 generate_group_rules($ruleset, $cluster_conf, $rule->{action});
92e976b3 1517 }
9e15114a 1518 ruleset_addrule($ruleset, $chain, "-j $group_chain");
b47ecc88
AD		 1519 if ($direction eq 'OUT'){
1520 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN");
1521 }else{
1522 my $accept = generate_nfqueue($options);
1523 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept");
1524 }
1525
92e976b3
DM		 1526 } else {
1527 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 1528 eval {
1529 if ($direction eq 'OUT') {
1530 ruleset_generate_rule($ruleset, $chain, $rule,
1531 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
1532 undef, $cluster_conf);
1533 } else {
1534 ruleset_generate_rule($ruleset, $chain, $rule,
1535 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
1536 undef, $cluster_conf);
1537 }
1538 };
1539 warn $@ if $@;
4e6112f9 1540 }
3a616aa0 1541 }
9e15114a
DM		 1542}
1543
b47ecc88
AD		 1544sub generate_nfqueue {
1545 my ($options) = @_;
1546
73089769
DM		 1547 if ($options->{ips}) {
1548 my $action = "NFQUEUE";
1549 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1550 if (defined($3) && defined($1)) {
b47ecc88 1551 $action .= " --queue-balance $1:$3";
73089769 1552 } elsif (defined($1)) {
b47ecc88
AD		 1553 $action .= " --queue-num $1";
1554 }
1555 }
8dc92812 1556 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 1557 return $action;
1558 } else {
1559 return "ACCEPT";
b47ecc88 1560 }
b47ecc88
AD		 1561}
1562
da6fc60b
AD		 1563sub ruleset_generate_vm_ipsrules {
1564 my ($ruleset, $options, $direction, $iface, $bridge) = @_;
1565
1566 if ($options->{ips} && $direction eq 'IN') {
1567 my $nfqueue = generate_nfqueue($options);
1568
1569 if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) {
1570 ruleset_create_chain($ruleset, "PVEFW-IPS");
1571 }
1572
1573 if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) {
1574 ruleset_create_chain($ruleset, "$bridge-IPS");
1575 ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS");
1576 }
1577
1578 ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
1579 }
1580}
1581
9e15114a 1582sub generate_venet_rules_direction {
6bafd113 1583 my ($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
9e15114a 1584
5176619e 1585 parse_address_list($ip); # make sure we have a valid $ip list
9e15114a
DM		 1586
1587 my $lc_direction = lc($direction);
1588
1589 my $rules = $vmfw_conf->{rules};
1590
1591 my $options = $vmfw_conf->{options};
6bafd113 1592 my $hostfw_options = $vmfw_conf->{options};
9e15114a
DM		 1593 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1594
1595 my $chain = "venet0-$vmid-$direction";
1596
6bafd113 1597 ruleset_create_vm_chain($ruleset, $chain, $options, $hostfw_options, undef, $direction);
9e15114a 1598
fca39c2c 1599 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction);
9e15114a
DM		 1600
1601 # implement policy
1602 my $policy;
1603
1604 if ($direction eq 'OUT') {
1605 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1606 } else {
1607 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1608 }
1609
b47ecc88
AD		 1610 my $accept = generate_nfqueue($options);
1611 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1612 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1613
38485daa 1614 # plug into FORWARD, INPUT and OUTPUT chain
eba0fb64
DM		 1615 if ($direction eq 'OUT') {
1616 ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", {
1617 action => $chain,
1618 source => $ip,
1619 iface_in => 'venet0'});
38485daa
DM		 1620
1621 ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", {
1622 action => $chain,
1623 source => $ip,
1624 iface_in => 'venet0'});
eba0fb64
DM		 1625 } else {
1626 ruleset_generate_rule($ruleset, "PVEFW-FORWARD", {
1627 action => $chain,
1628 dest => $ip,
1629 iface_out => 'venet0'});
38485daa
DM		 1630
1631 ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", {
1632 action => $chain,
1633 dest => $ip,
1634 iface_out => 'venet0'});
eba0fb64 1635 }
9e15114a
DM		 1636}
1637
1638sub generate_tap_rules_direction {
6bafd113 1639 my ($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_;
9e15114a
DM		 1640
1641 my $lc_direction = lc($direction);
1642
1643 my $rules = $vmfw_conf->{rules};
1644
1645 my $options = $vmfw_conf->{options};
6bafd113 1646 my $hostfw_options = $hostfw_conf->{options};
9e15114a
DM		 1647 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1648
1649 my $tapchain = "$iface-$direction";
1650
6bafd113 1651 ruleset_create_vm_chain($ruleset, $tapchain, $options, $hostfw_options, $macaddr, $direction);
9e15114a 1652
fca39c2c 1653 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options);
3a616aa0 1654
da6fc60b
AD		 1655 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge);
1656
ccae0b50
DM		 1657 # implement policy
1658 my $policy;
1659
1660 if ($direction eq 'OUT') {
72f63fde 1661 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
ccae0b50 1662 } else {
72f63fde 1663 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
ccae0b50
DM		 1664 }
1665
b47ecc88
AD		 1666 my $accept = generate_nfqueue($options);
1667 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1668 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
3a616aa0 1669
3fa83edf 1670 # plug the tap chain to bridge chain
3cc81077 1671 if ($direction eq 'IN') {
1a301a8d 1672 ruleset_addrule($ruleset, "$bridge-IN",
3cc81077
DM		 1673 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
1674 } else {
1a301a8d 1675 ruleset_addrule($ruleset, "$bridge-OUT",
3cc81077
DM		 1676 "-m physdev --physdev-in $iface -j $tapchain");
1677 }
3a616aa0
AD		 1678}
1679
d18c1e2b 1680sub enable_host_firewall {
fca39c2c 1681 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
0bd5f137 1682
92e976b3 1683 my $options = $hostfw_conf->{options};
63324b09 1684 my $cluster_options = $cluster_conf->{options};
92e976b3 1685 my $rules = $hostfw_conf->{rules};
35f0c37e 1686 my $cluster_rules = $cluster_conf->{rules};
178a63be 1687
3fa83edf 1688 # host inbound firewall
dec84fcd
DM		 1689 my $chain = "PVEFW-HOST-IN";
1690 ruleset_create_chain($ruleset, $chain);
0bd5f137 1691
178a63be
DM		 1692 my $loglevel = get_option_log_level($options, "log_level_in");
1693
4ac863a6
DM		 1694 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1695 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1696 }
1697
fb424a00
DM		 1698 if ($options->{tcpflags}) {
1699 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1700 }
1701
7fab95bc
DM		 1702 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1703 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
dec84fcd
DM		 1704 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
1705 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1706 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1707 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1708
23e888f8
DM		 1709 # we use RETURN because we need to check also tap rules
1710 my $accept_action = 'RETURN';
1711
35f0c37e
DM		 1712 # add host rules first, so that cluster wide rules can be overwritten
1713 foreach my $rule (@$rules, @$cluster_rules) {
92e976b3 1714 next if $rule->{type} ne 'in';
ba791b1f 1715 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf);
0bd5f137
AD		 1716 }
1717
23e888f8 1718 # implement input policy
63324b09 1719 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1720 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1721
3fa83edf 1722 # host outbound firewall
aadd745e 1723 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1724 ruleset_create_chain($ruleset, $chain);
1725
178a63be
DM		 1726 $loglevel = get_option_log_level($options, "log_level_out");
1727
7fab95bc
DM		 1728 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1729 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
dec84fcd
DM		 1730 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
1731 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1732 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1733 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1734
23e888f8
DM		 1735 # we use RETURN because we may want to check other thigs later
1736 $accept_action = 'RETURN';
1737
35f0c37e
DM		 1738 # add host rules first, so that cluster wide rules can be overwritten
1739 foreach my $rule (@$rules, @$cluster_rules) {
92e976b3 1740 next if $rule->{type} ne 'out';
ba791b1f 1741 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf);
0bd5f137
AD		 1742 }
1743
23e888f8 1744 # implement output policy
63324b09 1745 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 1746 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 1747
dec84fcd
DM		 1748 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
1749 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 1750}
1751
1752sub generate_group_rules {
fca39c2c 1753 my ($ruleset, $cluster_conf, $group) = @_;
c6f5cc88 1754 die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group};
9d31b418 1755
c6f5cc88 1756 my $rules = $cluster_conf->{groups}->{$group};
6158271d 1757
3fa83edf 1758 my $chain = "GROUP-${group}-IN";
9d31b418 1759
3fa83edf 1760 ruleset_create_chain($ruleset, $chain);
b47ecc88 1761 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1762
92e976b3
DM		 1763 foreach my $rule (@$rules) {
1764 next if $rule->{type} ne 'in';
ba791b1f 1765 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418
AD		 1766 }
1767
3fa83edf 1768 $chain = "GROUP-${group}-OUT";
9d31b418 1769
3fa83edf 1770 ruleset_create_chain($ruleset, $chain);
4e6112f9 1771 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1772
92e976b3
DM		 1773 foreach my $rule (@$rules) {
1774 next if $rule->{type} ne 'out';
1775 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1776 # check also other tap rules later
cbb5d6f3 1777 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 1778 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418 1779 }
9d31b418
AD		 1780}
1781
51bae274
DM		 1782my $MAX_NETS = 32;
1783my $valid_netdev_names = {};
1784for (my $i = 0; $i < $MAX_NETS; $i++) {
1785 $valid_netdev_names->{"net$i"} = 1;
1786}
5e1267a5 1787
51bae274
DM		 1788sub parse_fw_rule {
1789 my ($line, $need_iface, $allow_groups) = @_;
5e1267a5 1790
92e976b3 1791 my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport);
51bae274 1792
11bac5c2 1793 # we can add single line comments to the end of the rule
30c1ae52 1794 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
11bac5c2
DM		 1795
1796 # we can disable a rule when prefixed with '|'
ea9e5116
DM		 1797 my $enable = 1;
1798
1799 $enable = 0 if $line =~ s/^\|//;
51bae274
DM		 1800
1801 my @data = split(/\s+/, $line);
92e976b3 1802 my $expected_elements = $need_iface ? 8 : 7;
51bae274
DM		 1803
1804 die "wrong number of rule elements\n" if scalar(@data) > $expected_elements;
1805
1806 if ($need_iface) {
92e976b3 1807 ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data
51bae274 1808 } else {
92e976b3 1809 ($type, $action, $source, $dest, $proto, $dport, $sport) = @data;
51bae274
DM		 1810 }
1811
92e976b3 1812 die "incomplete rule\n" if ! ($type && $action);
51bae274 1813
961b4928 1814 my $macro;
961b4928 1815
92e976b3
DM		 1816 $type = lc($type);
1817
1818 if ($type eq 'in' || $type eq 'out') {
1819 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1820 # OK
1821 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
e5076eee
DM		 1822 $action = $2;
1823 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1824 die "unknown macro '$1'\n" if !$preferred_name;
1825 $macro = $preferred_name;
92e976b3
DM		 1826 } else {
1827 die "unknown action '$action'\n";
1828 }
1829 } elsif ($type eq 'group') {
1830 die "wrong number of rule elements\n" if scalar(@data) != 3;
1831 die "groups disabled\n" if !$allow_groups;
1832
44be8ceb 1833 die "invalid characters in group name\n" if $action !~ m/^${security_group_name_pattern}$/;
51bae274 1834 } else {
92e976b3 1835 die "unknown rule type '$type'\n";
51bae274
DM		 1836 }
1837
1838 if ($need_iface) {
1839 $iface = undef if $iface && $iface eq '-';
51bae274
DM		 1840 }
1841
1842 $proto = undef if $proto && $proto eq '-';
54cd19a8 1843 pve_fw_verify_protocol_spec($proto) if $proto;
51bae274
DM		 1844
1845 $source = undef if $source && $source eq '-';
1846 $dest = undef if $dest && $dest eq '-';
1847
1848 $dport = undef if $dport && $dport eq '-';
1849 $sport = undef if $sport && $sport eq '-';
1850
e5076eee
DM		 1851 parse_port_name_number_or_range($dport) if defined($dport);
1852 parse_port_name_number_or_range($sport) if defined($sport);
ba791b1f 1853
d72beb8e
DM		 1854 parse_address_list($source) if $source;
1855 parse_address_list($dest) if $dest;
51bae274 1856
e5076eee 1857 return {
92e976b3 1858 type => $type,
ea9e5116 1859 enable => $enable,
11bac5c2 1860 comment => $comment,
51bae274 1861 action => $action,
e5076eee 1862 macro => $macro,
51bae274
DM		 1863 iface => $iface,
1864 source => $source,
1865 dest => $dest,
51bae274
DM		 1866 proto => $proto,
1867 dport => $dport,
1868 sport => $sport,
51bae274
DM		 1869 };
1870}
1871
2d404ffc 1872sub parse_vmfw_option {
85c6eaed
DM		 1873 my ($line) = @_;
1874
1875 my ($opt, $value);
1876
178a63be
DM		 1877 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1878
6bafd113 1879 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 1880 $opt = lc($1);
1881 $value = int($2);
178a63be
DM		 1882 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1883 $opt = lc($1);
1884 $value = $2 ? lc($3) : '';
72f63fde 1885 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 1886 $opt = lc($1);
1887 $value = uc($3);
b47ecc88
AD		 1888 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1889 $opt = lc($1);
1890 $value = $2;
9c6b6efd 1891 } else {
85c6eaed
DM		 1892 chomp $line;
1893 die "can't parse option '$line'\n"
1894 }
1895
1896 return ($opt, $value);
1897}
1898
2d404ffc
DM		 1899sub parse_hostfw_option {
1900 my ($line) = @_;
1901
1902 my ($opt, $value);
1903
1904 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1905
9166ddf8 1906 if ($line =~ m/^(enable|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) {
2d404ffc
DM		 1907 $opt = lc($1);
1908 $value = int($2);
178a63be 1909 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 1910 $opt = lc($1);
1911 $value = $2 ? lc($3) : '';
28c082a1 1912 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 1913 $opt = lc($1);
1914 $value = int($2);
2d404ffc
DM		 1915 } else {
1916 chomp $line;
1917 die "can't parse option '$line'\n"
1918 }
1919
1920 return ($opt, $value);
1921}
1922
c6f5cc88
DM		 1923sub parse_clusterfw_option {
1924 my ($line) = @_;
1925
1926 my ($opt, $value);
1927
1928 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
1929 $opt = lc($1);
1930 $value = int($2);
63324b09
DM		 1931 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1932 $opt = lc($1);
1933 $value = uc($3);
c6f5cc88
DM		 1934 } else {
1935 chomp $line;
1936 die "can't parse option '$line'\n"
1937 }
1938
1939 return ($opt, $value);
1940}
1941
92e1209b
AD		 1942sub parse_clusterfw_alias {
1943 my ($line) = @_;
1944
1945 my ($opt, $value);
1946 if ($line =~ m/^(\S+)\s(\S+)$/) {
1947 $opt = lc($1);
1948 if($2){
1949 $2 =~ s|/32$||;
1950 pve_verify_ipv4_or_cidr($2) if $2;
1951 $value = $2;
1952 }
1953 } else {
1954 chomp $line;
1955 die "can't parse option '$line'\n";
1956 }
1957
1958 return ($opt, $value);
1959}
1960
51bae274
DM		 1961sub parse_vm_fw_rules {
1962 my ($filename, $fh) = @_;
1963
92e976b3 1964 my $res = { rules => [], options => {}};
51bae274
DM		 1965
1966 my $section;
1967
5e1267a5
DM		 1968 while (defined(my $line = <$fh>)) {
1969 next if $line =~ m/^#/;
1970 next if $line =~ m/^\s*$/;
1971
961b4928
DM		 1972 my $linenr = $fh->input_line_number();
1973 my $prefix = "$filename (line $linenr)";
1974
85c6eaed 1975 if ($line =~ m/^\[(\S+)\]\s*$/i) {
5e1267a5 1976 $section = lc($1);
85c6eaed 1977 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 1978 next;
1979 }
51bae274 1980 if (!$section) {
961b4928 1981 warn "$prefix: skip line - no section";
5e1267a5
DM		 1982 next;
1983 }
1984
85c6eaed
DM		 1985 next if !$res->{$section}; # skip undefined section
1986
1987 if ($section eq 'options') {
6158271d 1988 eval {
2d404ffc 1989 my ($opt, $value) = parse_vmfw_option($line);
85c6eaed
DM		 1990 $res->{options}->{$opt} = $value;
1991 };
1992 warn "$prefix: $@" if $@;
1993 next;
1994 }
1995
e5076eee
DM		 1996 my $rule;
1997 eval { $rule = parse_fw_rule($line, 1, 1); };
51bae274 1998 if (my $err = $@) {
961b4928 1999 warn "$prefix: $err";
5e1267a5
DM		 2000 next;
2001 }
2002
e5076eee 2003 push @{$res->{$section}}, $rule;
51bae274
DM		 2004 }
2005
2006 return $res;
2007}
2008
2009sub parse_host_fw_rules {
2010 my ($filename, $fh) = @_;
2011
92e976b3 2012 my $res = { rules => [], options => {}};
51bae274
DM		 2013
2014 my $section;
2015
2016 while (defined(my $line = <$fh>)) {
2017 next if $line =~ m/^#/;
2018 next if $line =~ m/^\s*$/;
2019
961b4928
DM		 2020 my $linenr = $fh->input_line_number();
2021 my $prefix = "$filename (line $linenr)";
2022
2d404ffc 2023 if ($line =~ m/^\[(\S+)\]\s*$/i) {
51bae274 2024 $section = lc($1);
2d404ffc 2025 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 2026 next;
2027 }
51bae274 2028 if (!$section) {
961b4928 2029 warn "$prefix: skip line - no section";
5e1267a5
DM		 2030 next;
2031 }
2032
2d404ffc
DM		 2033 next if !$res->{$section}; # skip undefined section
2034
2035 if ($section eq 'options') {
2036 eval {
2d404ffc
DM		 2037 my ($opt, $value) = parse_hostfw_option($line);
2038 $res->{options}->{$opt} = $value;
2039 };
2040 warn "$prefix: $@" if $@;
2041 next;
2042 }
2043
e5076eee
DM		 2044 my $rule;
2045 eval { $rule = parse_fw_rule($line, 1, 1); };
ecbea048 2046 if (my $err = $@) {
961b4928 2047 warn "$prefix: $err";
ecbea048 2048 next;
ecbea048 2049 }
cbb5d6f3 2050
e5076eee 2051 push @{$res->{$section}}, $rule;
51bae274 2052 }
ecbea048 2053
51bae274
DM		 2054 return $res;
2055}
4cdbb3b7 2056
c6f5cc88 2057sub parse_cluster_fw_rules {
51bae274 2058 my ($filename, $fh) = @_;
5e1267a5 2059
51bae274
DM		 2060 my $section;
2061 my $group;
2062
0d22acb3
DM		 2063 my $res = {
2064 rules => [],
2065 options => {},
2066 groups => {},
2067 group_comments => {},
d72c631c
DM		 2068 ipset => {} ,
2069 ipset_comments => {},
0d22acb3 2070 };
6158271d 2071
51bae274
DM		 2072 while (defined(my $line = <$fh>)) {
2073 next if $line =~ m/^#/;
2074 next if $line =~ m/^\s*$/;
2075
961b4928
DM		 2076 my $linenr = $fh->input_line_number();
2077 my $prefix = "$filename (line $linenr)";
2078
c6f5cc88
DM		 2079 if ($line =~ m/^\[options\]$/i) {
2080 $section = 'options';
2081 next;
2082 }
2083
92e1209b
AD		 2084 if ($line =~ m/^\[aliases\]$/i) {
2085 $section = 'aliases';
2086 next;
2087 }
2088
0d22acb3 2089 if ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
c6f5cc88 2090 $section = 'groups';
92e976b3 2091 $group = lc($1);
0d22acb3 2092 my $comment = $2;
c85c87f9 2093 $res->{$section}->{$group} = [];
649e4d57
DM		 2094 $res->{group_comments}->{$group} = decode('utf8', $comment)
2095 if $comment;
51bae274
DM		 2096 next;
2097 }
34cdedfa 2098
c6f5cc88
DM		 2099 if ($line =~ m/^\[rules\]$/i) {
2100 $section = 'rules';
2101 next;
2102 }
cbb5d6f3 2103
d72c631c 2104 if ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
34cdedfa
AD		 2105 $section = 'ipset';
2106 $group = lc($1);
d72c631c 2107 my $comment = $2;
c85c87f9 2108 $res->{$section}->{$group} = [];
649e4d57
DM		 2109 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
2110 if $comment;
34cdedfa
AD		 2111 next;
2112 }
2113
c6f5cc88 2114 if (!$section) {
cbb5d6f3 2115 warn "$prefix: skip line - no section\n";
51bae274
DM		 2116 next;
2117 }
2118
c6f5cc88
DM		 2119 if ($section eq 'options') {
2120 eval {
2121 my ($opt, $value) = parse_clusterfw_option($line);
2122 $res->{options}->{$opt} = $value;
2123 };
2124 warn "$prefix: $@" if $@;
92e1209b
AD		 2125 } elsif ($section eq 'aliases') {
2126 eval {
2127 my ($opt, $value) = parse_clusterfw_alias($line);
2128 $res->{aliases}->{$opt} = $value;
2129 };
2130 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2131 } elsif ($section eq 'rules') {
2132 my $rule;
2133 eval { $rule = parse_fw_rule($line, 1, 1); };
2134 if (my $err = $@) {
2135 warn "$prefix: $err";
2136 next;
2137 }
2138 push @{$res->{$section}}, $rule;
2139 } elsif ($section eq 'groups') {
34cdedfa
AD		 2140 my $rule;
2141 eval { $rule = parse_fw_rule($line, 0, 0); };
2142 if (my $err = $@) {
2143 warn "$prefix: $err";
2144 next;
2145 }
3f95d14a 2146 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2147 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2148 # we can add single line comments to the end of the rule
2149 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2150
30f1b100 2151 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2152 my $nomatch = $1;
9d6f90e6 2153 my $cidr = $2;
2a052ee3 2154
44be8ceb 2155 if($cidr !~ m/^${ip_alias_pattern}$/) {
92e1209b 2156 $cidr =~ s|/32$||;
30f1b100 2157
92e1209b
AD		 2158 eval { pve_verify_ipv4_or_cidr($cidr); };
2159 if (my $err = $@) {
2160 warn "$prefix: $cidr - $err";
2161 next;
2162 }
2a052ee3 2163 }
2a052ee3 2164
9d6f90e6
DM		 2165 my $entry = { cidr => $cidr };
2166 $entry->{nomatch} = 1 if $nomatch;
2167 $entry->{comment} = $comment if $comment;
2168
2169 push @{$res->{$section}->{$group}}, $entry;
51bae274 2170 }
5e1267a5
DM		 2171 }
2172
2173 return $res;
2174}
2175
06320eb0
DM		 2176sub run_locked {
2177 my ($code, @param) = @_;
2178
2179 my $timeout = 10;
2180
2181 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2182
2183 die $@ if $@;
2184
2185 return $res;
2186}
2187
5e1267a5
DM		 2188sub read_local_vm_config {
2189
2190 my $openvz = {};
5e1267a5
DM		 2191 my $qemu = {};
2192
c8301d63 2193 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2194
c8301d63
DM		 2195 my $vmlist = PVE::Cluster::get_vmlist();
2196 return $vmdata if !$vmlist || !$vmlist->{ids};
2197 my $ids = $vmlist->{ids};
2198
2199 foreach my $vmid (keys %$ids) {
2200 next if !$vmid; # skip VE0
2201 my $d = $ids->{$vmid};
2202 next if !$d->{node} || $d->{node} ne $nodename;
2203 next if !$d->{type};
2204 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2205 if ($have_pve_manager) {
2206 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2207 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2208 $openvz->{$vmid} = $conf;
2209 }
c8301d63
DM		 2210 }
2211 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2212 if ($have_qemu_server) {
2213 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2214 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2215 $qemu->{$vmid} = $conf;
2216 }
c8301d63 2217 }
5e1267a5
DM		 2218 }
2219 }
d9fee004 2220
5e1267a5
DM		 2221 return $vmdata;
2222};
2223
1a301a8d
AD		 2224sub read_bridges_config {
2225
2226 my $bridgehash = {};
2227
2228 dir_glob_foreach('/sys/class/net', 'vmbr(\d+)', sub {
2229 my ($bridge) = @_;
2230
2231 dir_glob_foreach("/sys/class/net/$bridge/brif", '((eth|bond)(\d+)(\.(\d+))?)', sub {
2232 my ($interface) = @_;
2233 push @{$bridgehash->{$bridge}}, $interface;
2234 });
2235 });
2236
2237 return $bridgehash;
2238};
2239
e7b35711
DM		 2240sub load_vmfw_conf {
2241 my ($vmid) = @_;
2242
2243 my $vmfw_conf = {};
2244
2245 my $filename = "/etc/pve/firewall/$vmid.fw";
2246 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2247 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
2248 }
2249
2250 return $vmfw_conf;
2251}
2252
464f933e
DM		 2253my $format_rules = sub {
2254 my ($rules, $need_iface) = @_;
2255
2256 my $raw = '';
2257
2258 foreach my $rule (@$rules) {
c14dacdf 2259 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2260 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2261 $raw .= uc($rule->{type});
7ca36671
DM		 2262 if ($rule->{macro}) {
2263 $raw .= " $rule->{macro}($rule->{action})";
2264 } else {
2265 $raw .= " " . $rule->{action};
2266 }
464f933e 2267 $raw .= " " . ($rule->{iface} || '-') if $need_iface;
c14dacdf
DM		 2268
2269 if ($rule->{type} ne 'group') {
2270 $raw .= " " . ($rule->{source} || '-');
2271 $raw .= " " . ($rule->{dest} || '-');
2272 $raw .= " " . ($rule->{proto} || '-');
2273 $raw .= " " . ($rule->{dport} || '-');
2274 $raw .= " " . ($rule->{sport} || '-');
2275 }
2276
cbb5d6f3 2277 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2278 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2279 $raw .= "\n";
2280 } else {
c14dacdf 2281 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2282 }
2283 }
2284
2285 return $raw;
2286};
2287
2288my $format_options = sub {
68c90e21
DM		 2289 my ($options) = @_;
2290
2291 my $raw = '';
464f933e
DM		 2292
2293 $raw .= "[OPTIONS]\n\n";
2294 foreach my $opt (keys %$options) {
2295 $raw .= "$opt: $options->{$opt}\n";
2296 }
2297 $raw .= "\n";
68c90e21
DM		 2298
2299 return $raw;
464f933e
DM		 2300};
2301
0d5f0a0f
DM		 2302my $format_aliases = sub {
2303 my ($aliases) = @_;
2304
2305 my $raw = '';
2306
2307 $raw .= "[ALIASES]\n\n";
2308 foreach my $k (keys %$aliases) {
2309 $raw .= "$k $aliases->{$k}\n";
2310 }
2311 $raw .= "\n";
2312
2313 return $raw;
2314};
2315
9d6f90e6
DM		 2316my $format_ipset = sub {
2317 my ($options) = @_;
2318
2319 my $raw = '';
2320
6e299ae3 2321 my $nethash = {};
9d6f90e6 2322 foreach my $entry (@$options) {
6e299ae3
DM		 2323 $nethash->{$entry->{cidr}} = $entry;
2324 }
2325
2326 foreach my $cidr (sort keys %$nethash) {
2327 my $entry = $nethash->{$cidr};
9d6f90e6
DM		 2328 my $line = $entry->{nomatch} ? '!' : '';
2329 $line .= $entry->{cidr};
2330 $line .= " # " . encode('utf8', $entry->{comment})
2331 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2332 $raw .= "$line\n";
2333 }
2334
2335 return $raw;
2336};
2337
464f933e
DM		 2338sub save_vmfw_conf {
2339 my ($vmid, $vmfw_conf) = @_;
2340
2341 my $raw = '';
2342
2343 my $options = $vmfw_conf->{options};
68c90e21 2344 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2345
464f933e
DM		 2346 my $rules = $vmfw_conf->{rules};
2347 if (scalar(@$rules)) {
2348 $raw .= "[RULES]\n\n";
2349 $raw .= &$format_rules($rules, 1);
2350 $raw .= "\n";
2351 }
2352
2353 my $filename = "/etc/pve/firewall/$vmid.fw";
2354 PVE::Tools::file_set_contents($filename, $raw);
2355}
2356
6fc63ffd 2357sub read_vm_firewall_configs {
5e1267a5 2358 my ($vmdata) = @_;
6fc63ffd 2359 my $vmfw_configs = {};
c8301d63 2360
5e1267a5 2361 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
e7b35711
DM		 2362 my $vmfw_conf = load_vmfw_conf($vmid);
2363 next if !$vmfw_conf->{options}; # skip if file does not exists
2364 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2365 }
2366
6fc63ffd 2367 return $vmfw_configs;
5e1267a5
DM		 2368}
2369
2d404ffc
DM		 2370sub get_option_log_level {
2371 my ($options, $k) = @_;
2372
2373 my $v = $options->{$k};
178a63be 2374 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2375
2376 return undef if $v eq '' || $v eq 'nolog';
2377
2378 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2379
2380 return $v if ($v >= 0) && ($v <= 7);
2381
2382 warn "unknown log level ($k = '$v')\n";
2383
2384 return undef;
2385}
2386
d8f2505e 2387sub generate_std_chains {
2d404ffc 2388 my ($ruleset, $options) = @_;
cbb5d6f3 2389
2d404ffc
DM		 2390 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2391
2392 # same as shorewall smurflog.
782c4cde 2393 my $chain = 'PVEFW-smurflog';
12f3796e 2394 $pve_std_chains->{$chain} = [];
782c4cde
DM		 2395
2396 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2397 push @{$pve_std_chains->{$chain}}, "-j DROP";
2d404ffc
DM		 2398
2399 # same as shorewall logflags action.
2400 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2401 $chain = 'PVEFW-logflags';
12f3796e
DM		 2402 $pve_std_chains->{$chain} = [];
2403
782c4cde
DM		 2404 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2405 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2406 push @{$pve_std_chains->{$chain}}, "-j DROP";
d8f2505e
DM		 2407
2408 foreach my $chain (keys %$pve_std_chains) {
2409 ruleset_create_chain($ruleset, $chain);
2410 foreach my $rule (@{$pve_std_chains->{$chain}}) {
2411 if (ref($rule)) {
2412 ruleset_generate_rule($ruleset, $chain, $rule);
2413 } else {
2414 ruleset_addrule($ruleset, $chain, $rule);
2415 }
2416 }
2417 }
2418}
2419
34cdedfa 2420sub generate_ipset_chains {
dd7a13fd 2421 my ($ipset_ruleset, $fw_conf) = @_;
34cdedfa 2422
dd7a13fd 2423 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
92e1209b 2424 generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}, $fw_conf->{aliases});
34cdedfa
AD		 2425 }
2426}
2427
2428sub generate_ipset {
92e1209b 2429 my ($ipset_ruleset, $name, $options, $aliases) = @_;
34cdedfa 2430
dd7a13fd
DM		 2431 my $hashsize = scalar(@$options);
2432 if ($hashsize <= 64) {
2a052ee3 2433 $hashsize = 64;
dd7a13fd 2434 } else {
2a052ee3
AD		 2435 $hashsize = round_powerof2($hashsize);
2436 }
2437
dd7a13fd 2438 push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize";
34cdedfa 2439
30f1b100
DM		 2440 # remove duplicates
2441 my $nethash = {};
9d6f90e6 2442 foreach my $entry (@$options) {
92e1209b 2443 my $cidr = $entry->{cidr};
d4091b82
DM		 2444 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2445 if ($aliases->{$cidr}) {
2446 $entry->{cidr} = $aliases->{$cidr};
2447 } else {
2448 warn "no such alias '$cidr'\n" if !$aliases->{$cidr};
2449 }
92e1209b 2450 }
30f1b100
DM		 2451 $nethash->{$entry->{cidr}} = $entry;
2452 }
2453
2454 foreach my $cidr (sort keys %$nethash) {
2455 my $entry = $nethash->{$cidr};
2456
9d6f90e6
DM		 2457 my $cmd = "add $name $cidr";
2458 if ($entry->{nomatch}) {
2459 if ($feature_ipset_nomatch) {
2460 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2461 } else {
2462 warn "ignore !$cidr - nomatch not supported by kernel\n";
2463 }
2464 } else {
2465 push @{$ipset_ruleset->{$name}}, $cmd;
2466 }
34cdedfa 2467 }
2a052ee3
AD		 2468}
2469
2470sub round_powerof2 {
dd7a13fd 2471 my ($int) = @_;
2a052ee3 2472
dd7a13fd
DM		 2473 $int--;
2474 $int |= $int >> $_ foreach (1,2,4,8,16);
2475 return ++$int;
34cdedfa
AD		 2476}
2477
6b9f68a2
DM		 2478sub save_pvefw_status {
2479 my ($status) = @_;
2480
2481 die "unknown status '$status' - internal error"
2482 if $status !~ m/^(stopped|active)$/;
2483
2484 mkdir dirname($pve_fw_status_filename);
2485 PVE::Tools::file_set_contents($pve_fw_status_filename, $status);
2486}
2487
2488sub read_pvefw_status {
2489
2490 my $status = 'unknown';
2491
2492 return 'stopped' if ! -f $pve_fw_status_filename;
2493
2494 eval {
2495 $status = PVE::Tools::file_get_contents($pve_fw_status_filename);
2496 };
2497 warn $@ if $@;
2498
2499 return $status;
2500}
2501
530c005e
DM		 2502# fixme: move to pve-common PVE::ProcFSTools
2503sub read_proc_net_route {
2504 my $filename = "/proc/net/route";
2505
2506 my $res = {};
2507
2508 my $fh = IO::File->new ($filename, "r");
2509 return $res if !$fh;
2510
2511 my $int_to_quad = sub {
2512 return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0);
2513 };
2514
2515 while (defined(my $line = <$fh>)) {
2516 next if $line =~/^Iface\s+Destination/; # skip head
2517 my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8];
2518 push @{$res->{$iface}}, {
2519 dest => &$int_to_quad(hex($dest)),
2520 gateway => &$int_to_quad(hex($gateway)),
2521 mask => &$int_to_quad(hex($mask)),
2522 metric => $metric,
2523 mtu => $mtu,
2524 };
2525 }
2526
2527 return $res;
2528}
2529
fca39c2c 2530sub load_clusterfw_conf {
530c005e 2531
fca39c2c
DM		 2532 my $cluster_conf = {};
2533 if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) {
c6f5cc88 2534 $cluster_conf = parse_cluster_fw_rules($clusterfw_conf_filename, $fh);
51bae274 2535 }
5e1267a5 2536
fca39c2c 2537 return $cluster_conf;
e5d76bde
DM		 2538}
2539
fca39c2c
DM		 2540sub save_clusterfw_conf {
2541 my ($cluster_conf) = @_;
9c7e0858
DM		 2542
2543 my $raw = '';
9c7e0858 2544
c6f5cc88 2545 my $options = $cluster_conf->{options};
68c90e21 2546 $raw .= &$format_options($options) if scalar(keys %$options);
9c7e0858 2547
0d5f0a0f
DM		 2548 my $aliases = $cluster_conf->{aliases};
2549 $raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
2550
9d6f90e6 2551 foreach my $ipset (sort keys %{$cluster_conf->{ipset}}) {
d72c631c 2552 if (my $comment = $cluster_conf->{ipset_comments}->{$ipset}) {
649e4d57
DM		 2553 my $utf8comment = encode('utf8', $comment);
2554 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
d72c631c
DM		 2555 } else {
2556 $raw .= "[IPSET $ipset]\n\n";
2557 }
9d6f90e6
DM		 2558 my $options = $cluster_conf->{ipset}->{$ipset};
2559 $raw .= &$format_ipset($options);
2560 $raw .= "\n";
2561 }
c6f5cc88
DM		 2562
2563 my $rules = $cluster_conf->{rules};
2564 if (scalar(@$rules)) {
2565 $raw .= "[RULES]\n\n";
63c91681 2566 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 2567 $raw .= "\n";
2568 }
2569
2570 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
2571 my $rules = $cluster_conf->{groups}->{$group};
0d22acb3 2572 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
649e4d57
DM		 2573 my $utf8comment = encode('utf8', $comment);
2574 $raw .= "[group $group] # $utf8comment\n\n";
0d22acb3
DM		 2575 } else {
2576 $raw .= "[group $group]\n\n";
2577 }
2578
63c91681 2579 $raw .= &$format_rules($rules, 0);
9c7e0858
DM		 2580 $raw .= "\n";
2581 }
2582
fca39c2c 2583 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 2584}
2585
8b27beb9
DM		 2586sub load_hostfw_conf {
2587
2588 my $hostfw_conf = {};
63c91681
DM		 2589 if (my $fh = IO::File->new($hostfw_conf_filename, O_RDONLY)) {
2590 $hostfw_conf = parse_host_fw_rules($hostfw_conf_filename, $fh);
8b27beb9
DM		 2591 }
2592 return $hostfw_conf;
2593}
2594
63c91681
DM		 2595sub save_hostfw_conf {
2596 my ($hostfw_conf) = @_;
2597
2598 my $raw = '';
2599
2600 my $options = $hostfw_conf->{options};
68c90e21 2601 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2602
63c91681
DM		 2603 my $rules = $hostfw_conf->{rules};
2604 if (scalar(@$rules)) {
2605 $raw .= "[RULES]\n\n";
2606 $raw .= &$format_rules($rules, 1);
2607 $raw .= "\n";
2608 }
2609
2610 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
2611}
2612
e5d76bde 2613sub compile {
3dfa8a7f
DM		 2614 my ($cluster_conf, $hostfw_conf) = @_;
2615
2616 $cluster_conf = load_clusterfw_conf() if !$cluster_conf;
2617 $hostfw_conf = load_hostfw_conf() if !$hostfw_conf;
2618
e5d76bde
DM		 2619 my $vmdata = read_local_vm_config();
2620 my $vmfw_configs = read_vm_firewall_configs($vmdata);
2621
2622 my $routing_table = read_proc_net_route();
1a301a8d
AD		 2623
2624 my $bridges_config = read_bridges_config();
e5d76bde 2625
34cdedfa 2626 my $ipset_ruleset = {};
fca39c2c 2627 generate_ipset_chains($ipset_ruleset, $cluster_conf);
34cdedfa 2628
3fa83edf
DM		 2629 my $ruleset = {};
2630
dec84fcd
DM		 2631 ruleset_create_chain($ruleset, "PVEFW-INPUT");
2632 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 2633
fadb13dd 2634 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3fa83edf 2635
8b27beb9 2636 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 2637
92e976b3 2638 generate_std_chains($ruleset, $hostfw_options);
fadb13dd 2639
6d2ab017 2640 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 2641
fca39c2c 2642 enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable;
3fa83edf 2643
6158271d 2644 # generate firewall rules for QEMU VMs
3fa83edf
DM		 2645 foreach my $vmid (keys %{$vmdata->{qemu}}) {
2646 my $conf = $vmdata->{qemu}->{$vmid};
6fc63ffd 2647 my $vmfw_conf = $vmfw_configs->{$vmid};
fa9c4a6f
DM		 2648 next if !$vmfw_conf;
2649 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
3fa83edf
DM		 2650
2651 foreach my $netid (keys %$conf) {
2652 next if $netid !~ m/^net(\d+)$/;
2653 my $net = PVE::QemuServer::parse_net($conf->{$netid});
2654 next if !$net;
2655 my $iface = "tap${vmid}i$1";
5e1267a5 2656
3fa83edf
DM		 2657 my $bridge = $net->{bridge};
2658 next if !$bridge; # fixme: ?
2659
2660 $bridge .= "v$net->{tag}" if $net->{tag};
2661
1a301a8d 2662 generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config);
3fa83edf 2663
c29f55c9 2664 my $macaddr = $net->{macaddr};
6bafd113 2665 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2666 $vmfw_conf, $vmid, $bridge, 'IN');
6bafd113 2667 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2668 $vmfw_conf, $vmid, $bridge, 'OUT');
3fa83edf
DM		 2669 }
2670 }
c8301d63
DM		 2671
2672 # generate firewall rules for OpenVZ containers
2673 foreach my $vmid (keys %{$vmdata->{openvz}}) {
2674 my $conf = $vmdata->{openvz}->{$vmid};
2675
2676 my $vmfw_conf = $vmfw_configs->{$vmid};
2677 next if !$vmfw_conf;
2678 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
2679
2680 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
2681 my $ip = $conf->{ip_address}->{value};
6bafd113
DM		 2682 generate_venet_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'IN');
2683 generate_venet_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'OUT');
c8301d63
DM		 2684 }
2685
2686 if ($conf->{netif} && $conf->{netif}->{value}) {
2687 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
c8301d63
DM		 2688 foreach my $netid (keys %$netif) {
2689 my $d = $netif->{$netid};
2690 my $bridge = $d->{bridge};
2691 if (!$bridge) {
2692 warn "no bridge device for CT $vmid iface '$netid'\n";
2693 next; # fixme?
2694 }
cbb5d6f3 2695
1a301a8d 2696 generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config);
530c005e 2697
12d0f130 2698 my $macaddr = $d->{mac};
c8301d63 2699 my $iface = $d->{host_ifname};
6bafd113 2700 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2701 $vmfw_conf, $vmid, $bridge, 'IN');
6bafd113 2702 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2703 $vmfw_conf, $vmid, $bridge, 'OUT');
c8301d63
DM		 2704 }
2705 }
2706 }
c0413e35 2707
cc10e5d7 2708 if($hostfw_options->{optimize}){
da6fc60b 2709
e9d9a73e 2710 my $accept = ruleset_chain_exist($ruleset, "PVEFW-IPS") ? "PVEFW-IPS" : "ACCEPT";
da6fc60b 2711 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
cc10e5d7
AD		 2712 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP");
2713 }
2714
eba0fb64
DM		 2715 # fixme: what log level should we use here?
2716 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2717
c98c037d
DM		 2718 # fixme: should we really block inter-bridge traffic?
2719
2720 # always allow traffic from containers?
2721 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN");
2722
eba0fb64 2723 # disable interbridge routing
cbb5d6f3 2724 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop");
eba0fb64 2725 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop");
cbb5d6f3
DM		 2726 ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+");
2727 ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+");
2728 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP");
eba0fb64
DM		 2729 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP");
2730
3dfa8a7f 2731 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 2732}
2733
2734sub get_ruleset_status {
4bd0a9c4 2735 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 2736
2737 my $statushash = {};
2738
2739 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 2740 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 2741
3fa83edf
DM		 2742 $statushash->{$chain}->{sig} = $sig;
2743
2744 my $oldsig = $active_chains->{$chain};
2745 if (!defined($oldsig)) {
2746 $statushash->{$chain}->{action} = 'create';
2747 } else {
2748 if ($oldsig eq $sig) {
2749 $statushash->{$chain}->{action} = 'exists';
2750 } else {
2751 $statushash->{$chain}->{action} = 'update';
2752 }
2753 }
2754 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2755 foreach my $cmd (@{$ruleset->{$chain}}) {
2756 print "\t$cmd\n" if $verbose;
2757 }
2758 }
2759
2760 foreach my $chain (sort keys %$active_chains) {
2761 if (!defined($ruleset->{$chain})) {
2762 my $sig = $active_chains->{$chain};
2763 $statushash->{$chain}->{action} = 'delete';
2764 $statushash->{$chain}->{sig} = $sig;
2765 print "delete $chain ($sig)\n" if $verbose;
2766 }
6158271d 2767 }
2a052ee3 2768
3fa83edf
DM		 2769 return $statushash;
2770}
2771
3fa83edf
DM		 2772sub print_sig_rule {
2773 my ($chain, $sig) = @_;
2774
09d5f68e
DM		 2775 # We just use this to store a SHA1 checksum used to detect changes
2776 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 2777}
2778
df7cb349 2779sub get_ruleset_cmdlist {
a84f4d96 2780 my ($ruleset, $verbose) = @_;
3fa83edf 2781
3fa83edf 2782 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 2783
4bd0a9c4
DM		 2784 my ($active_chains, $hooks) = iptables_get_chains();
2785 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 2786
2787 # create missing chains first
2788 foreach my $chain (sort keys %$ruleset) {
2789 my $stat = $statushash->{$chain};
2790 die "internal error" if !$stat;
2791 next if $stat->{action} ne 'create';
886aba9c 2792
3fa83edf
DM		 2793 $cmdlist .= ":$chain - [0:0]\n";
2794 }
2795
4bd0a9c4
DM		 2796 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2797 if (!$hooks->{$h}) {
2798 $cmdlist .= "-A $h -j PVEFW-$h\n";
2799 }
3fa83edf
DM		 2800 }
2801
2802 foreach my $chain (sort keys %$ruleset) {
2803 my $stat = $statushash->{$chain};
2804 die "internal error" if !$stat;
2805
2806 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2807 $cmdlist .= "-F $chain\n";
2808 foreach my $cmd (@{$ruleset->{$chain}}) {
2809 $cmdlist .= "$cmd\n";
2810 }
2811 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2812 } elsif ($stat->{action} eq 'delete') {
f5d28682 2813 die "internal error"; # this should not happen
3fa83edf
DM		 2814 } elsif ($stat->{action} eq 'exists') {
2815 # do nothing
2816 } else {
2817 die "internal error - unknown status '$stat->{action}'";
2818 }
2819 }
2820
f5d28682
DM		 2821 foreach my $chain (keys %$statushash) {
2822 next if $statushash->{$chain}->{action} ne 'delete';
2823 $cmdlist .= "-F $chain\n";
2824 }
2825 foreach my $chain (keys %$statushash) {
2826 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 2827 next if $chain eq 'PVEFW-INPUT';
2828 next if $chain eq 'PVEFW-OUTPUT';
2829 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 2830 $cmdlist .= "-X $chain\n";
2831 }
2832
3f95d14a 2833 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 2834
3fa83edf
DM		 2835 $cmdlist .= "COMMIT\n";
2836
3f95d14a 2837 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 2838}
2839
34cdedfa 2840sub get_ipset_cmdlist {
dd7a13fd 2841 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 2842
2843 my $cmdlist = "";
2844
dd7a13fd
DM		 2845 my $delete_cmdlist = "";
2846
4bd0a9c4
DM		 2847 my $active_chains = ipset_get_chains();
2848 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 2849
30f1b100
DM		 2850 # remove stale _swap chains
2851 foreach my $chain (keys %$active_chains) {
2852 if ($chain =~ m/^PVEFW-\S+_swap$/) {
2853 $cmdlist .= "destroy $chain\n";
2854 }
2855 }
2856
dd7a13fd
DM		 2857 foreach my $chain (sort keys %$ruleset) {
2858 my $stat = $statushash->{$chain};
2859 die "internal error" if !$stat;
2a052ee3 2860
dd7a13fd
DM		 2861 if ($stat->{action} eq 'create') {
2862 foreach my $cmd (@{$ruleset->{$chain}}) {
34cdedfa
AD		 2863 $cmdlist .= "$cmd\n";
2864 }
dd7a13fd 2865 }
34cdedfa 2866
dd7a13fd
DM		 2867 if ($stat->{action} eq 'update') {
2868 my $chain_swap = $chain."_swap";
cbb5d6f3 2869
dd7a13fd
DM		 2870 foreach my $cmd (@{$ruleset->{$chain}}) {
2871 $cmd =~ s/$chain/$chain_swap/;
2872 $cmdlist .= "$cmd\n";
34cdedfa 2873 }
dd7a13fd
DM		 2874 $cmdlist .= "swap $chain_swap $chain\n";
2875 $cmdlist .= "flush $chain_swap\n";
2876 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 2877 }
34cdedfa 2878
dd7a13fd 2879 }
3f95d14a 2880
dd7a13fd
DM		 2881 foreach my $chain (keys %$statushash) {
2882 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 2883
dd7a13fd
DM		 2884 $delete_cmdlist .= "flush $chain\n";
2885 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 2886 }
2887
dd7a13fd 2888 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 2889
dd7a13fd 2890 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 2891}
2892
6b9f68a2 2893sub apply_ruleset {
34cdedfa 2894 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
6b9f68a2
DM		 2895
2896 enable_bridge_firewall();
2897
cbb5d6f3 2898 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 2899 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 2900
81a0bf43 2901 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
2a052ee3 2902
81a0bf43
DM		 2903 if ($verbose) {
2904 if ($ipset_changes) {
2905 print "ipset changes:\n";
2906 print $ipset_create_cmdlist if $ipset_create_cmdlist;
2907 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
2908 }
3f95d14a 2909
81a0bf43
DM		 2910 if ($changes) {
2911 print "iptables changes:\n";
2912 print $cmdlist;
2913 }
2914 }
3fa83edf 2915
2a052ee3 2916 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 2917
3fa83edf
DM		 2918 iptables_restore_cmdlist($cmdlist);
2919
dd7a13fd 2920 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 2921
6158271d 2922 # test: re-read status and check if everything is up to date
4bd0a9c4 2923 my $active_chains = iptables_get_chains();
81a0bf43 2924 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 2925
2926 my $errors;
2927 foreach my $chain (sort keys %$ruleset) {
2928 my $stat = $statushash->{$chain};
2929 if ($stat->{action} ne 'exists') {
2930 warn "unable to update chain '$chain'\n";
2931 $errors = 1;
2932 }
2933 }
b6360c3f 2934
3fa83edf 2935 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 2936
2937 update_nf_conntrack_max($hostfw_conf);
2938
2939 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
2940
b6360c3f
DM		 2941}
2942
490cdead
DM		 2943sub update_nf_conntrack_max {
2944 my ($hostfw_conf) = @_;
2945
2946 my $max = 65536; # reasonable default
2947
2948 my $options = $hostfw_conf->{options} || {};
2949
2950 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
2951 $max = $options->{nf_conntrack_max};
2952 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2953 }
2954
2955 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
2956 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
2957
2958 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
2959
2960 if ($current != $max) {
2961 my $hashsize = int($max/4);
2962 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
2963 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
2964 }
2965}
2966
28c082a1
AD		 2967sub update_nf_conntrack_tcp_timeout_established {
2968 my ($hostfw_conf) = @_;
2969
2970 my $options = $hostfw_conf->{options} || {};
2971
2972 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
2973
2974 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
2975}
2976
c4a2e5ae
DM		 2977sub remove_pvefw_chains {
2978
2979 my ($chash, $hooks) = iptables_get_chains();
2980 my $cmdlist = "*filter\n";
2981
2982 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2983 if ($hooks->{$h}) {
2984 $cmdlist .= "-D $h -j PVEFW-$h\n";
2985 }
2986 }
cbb5d6f3 2987
c4a2e5ae
DM		 2988 foreach my $chain (keys %$chash) {
2989 $cmdlist .= "-F $chain\n";
2990 }
2991
2992 foreach my $chain (keys %$chash) {
2993 $cmdlist .= "-X $chain\n";
2994 }
2995 $cmdlist .= "COMMIT\n";
2996
2997 iptables_restore_cmdlist($cmdlist);
2998}
2999
6b9f68a2
DM		 3000sub update {
3001 my ($start, $verbose) = @_;
3002
3003 my $code = sub {
3dfa8a7f
DM		 3004
3005 my $cluster_conf = load_clusterfw_conf();
3006 my $cluster_options = $cluster_conf->{options};
3007
51e57fee 3008 my $enable = $cluster_options->{enable};
3dfa8a7f 3009
6b9f68a2
DM		 3010 my $status = read_pvefw_status();
3011
3dfa8a7f
DM		 3012 die "Firewall is disabled - cannot start\n" if !$enable && $start;
3013
3014 if (!$enable) {
b22130d3 3015 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 3016 print "Firewall disabled\n" if $verbose;
3017 return;
3018 }
3019
3020 my $hostfw_conf = load_hostfw_conf();
3021
3022 my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 3023
6b9f68a2
DM		 3024 if ($start || $status eq 'active') {
3025
3026 save_pvefw_status('active') if ($status ne 'active');
3027
34cdedfa 3028 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose);
6b9f68a2
DM		 3029 } else {
3030 print "Firewall not active (status = $status)\n" if $verbose;
3031 }
3032 };
3033
3034 run_locked($code);
3035}
3036
3037
b6360c3f 30381;
Firewall test scripts