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update update_nf_conntrack_max && nf_conntrack_tcp_timeout_established after modules...
[pve-firewall.git] / src / PVE / Firewall.pm
CommitLineData
b6360c3f
DM		 1package PVE::Firewall;
2
3use warnings;
4use strict;
cbb5d6f3 5use POSIX;
b6360c3f 6use Data::Dumper;
09d5f68e 7use Digest::SHA;
c8301d63 8use PVE::INotify;
7ca36671 9use PVE::Exception qw(raise raise_param_exc);
e74a87f5 10use PVE::JSONSchema qw(register_standard_option get_standard_option);
c8301d63 11use PVE::Cluster;
5f0a912c 12use PVE::ProcFSTools;
009ee3ac 13use PVE::Tools qw($IPV4RE);
6b9f68a2 14use File::Basename;
5e1267a5
DM		 15use File::Path;
16use IO::File;
ecbea048 17use Net::IP;
1a301a8d 18use PVE::Tools qw(run_command lock_file dir_glob_foreach);
30c1ae52 19use Encode;
ecbea048 20
63c91681 21my $hostfw_conf_filename = "/etc/pve/local/host.fw";
fca39c2c
DM		 22my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw";
23
cbb5d6f3 24# dynamically include PVE::QemuServer and PVE::OpenVZ
d9fee004
DM		 25# to avoid dependency problems
26my $have_qemu_server;
27eval {
28 require PVE::QemuServer;
29 $have_qemu_server = 1;
30};
31
32my $have_pve_manager;
33eval {
34 require PVE::OpenVZ;
35 $have_pve_manager = 1;
36};
37
009ee3ac
DM		 38PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr);
39sub pve_verify_ipv4_or_cidr {
40 my ($cidr, $noerr) = @_;
41
30f1b100
DM		 42 if ($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
cbb5d6f3 1312 foreach my $tmp (@$rules) {
ba791b1f 1313 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) {
e5076eee
DM		 1314 ruleset_addrule($ruleset, $chain, $cmdstr);
1315 }
41524a58 1316 }
3fa83edf 1317}
0f168d7b 1318
eba0fb64
DM		 1319sub ruleset_generate_rule_insert {
1320 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1321
e5076eee
DM		 1322 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1323
eba0fb64
DM		 1324 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
1325 ruleset_insertrule($ruleset, $chain, $cmdstr);
1326 }
1327}
3fa83edf
DM		 1328
1329sub ruleset_create_chain {
1330 my ($ruleset, $chain) = @_;
3a616aa0 1331
d050c724 1332 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1333 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1334
3fa83edf
DM		 1335 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1336
1337 $ruleset->{$chain} = [];
3a616aa0
AD		 1338}
1339
3fa83edf
DM		 1340sub ruleset_chain_exist {
1341 my ($ruleset, $chain) = @_;
3a616aa0 1342
3fa83edf
DM		 1343 return $ruleset->{$chain} ? 1 : undef;
1344}
3a616aa0 1345
3fa83edf
DM		 1346sub ruleset_addrule {
1347 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1348
3fa83edf 1349 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1350
3fa83edf
DM		 1351 push @{$ruleset->{$chain}}, "-A $chain $rule";
1352}
3a616aa0 1353
3fa83edf
DM		 1354sub ruleset_insertrule {
1355 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1356
3fa83edf 1357 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1358
3fa83edf
DM		 1359 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1360}
3a616aa0 1361
782c4cde
DM		 1362sub get_log_rule_base {
1363 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1364
782c4cde
DM		 1365 die "internal error - no log level" if !defined($loglevel);
1366
1367 $vmid = 0 if !defined($vmid);
1368
cbb5d6f3 1369 # Note: we use special format for prefix to pass further
782c4cde
DM		 1370 # info to log daemon (VMID, LOGVELEL and CHAIN)
1371
1372 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1373}
1374
1375sub ruleset_addlog {
1376 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1377
1378 return if !defined($loglevel);
1379
1380 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1381
1382 $logrule = "$rule $logrule" if defined($rule);
1383
1384 ruleset_addrule($ruleset, $chain, $logrule)
1385}
1386
3fa83edf 1387sub generate_bridge_chains {
1a301a8d 1388 my ($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config) = @_;
530c005e
DM		 1389
1390 my $options = $hostfw_conf->{options} || {};
1391
1392 die "error: detected direct route to bridge '$bridge'\n"
1393 if !$options->{allow_bridge_route} && $routing_table->{$bridge};
2f3d8d76 1394
5927497d
DM		 1395 if (!ruleset_chain_exist($ruleset, "$bridge-FW")) {
1396 ruleset_create_chain($ruleset, "$bridge-FW");
3cc81077
DM		 1397 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW");
1398 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW");
3fa83edf 1399 }
3a616aa0 1400
3fa83edf
DM		 1401 if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) {
1402 ruleset_create_chain($ruleset, "$bridge-OUT");
1a301a8d
AD		 1403
1404 if($options->{optimize}){
1405 foreach my $interface (@{$bridges_config->{$bridge}}) {
1406 ruleset_addrule($ruleset, "$bridge-OUT", "-m physdev --physdev-is-bridged --physdev-in $interface -g PVEFW-SET-ACCEPT-MARK");
1407 }
1408 }
1409
3cc81077
DM		 1410 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT");
1411 ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT");
9fcad984
AD		 1412 }
1413
1414 if (!ruleset_chain_exist($ruleset, "$bridge-IN")) {
1415 ruleset_create_chain($ruleset, "$bridge-IN");
1a301a8d
AD		 1416
1417 if($options->{optimize}){
1418 foreach my $interface (@{$bridges_config->{$bridge}}) {
1419 ruleset_addrule($ruleset, "$bridge-IN", "-m physdev --physdev-is-bridged --physdev-out $interface -j ACCEPT");
1420 }
1421 }
1422
3cc81077 1423 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN");
fdb0bf20 1424 ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT");
7323008d 1425 # accept traffic to unmanaged bridge ports
3cc81077 1426 ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT ");
3fa83edf
DM		 1427 }
1428}
3a616aa0 1429
ead850e8 1430sub ruleset_add_chain_policy {
782c4cde 1431 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1432
1433 if ($policy eq 'ACCEPT') {
1434
1435 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1436 { ACCEPT => $accept_action});
1437
1438 } elsif ($policy eq 'DROP') {
1439
1440 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1441
782c4cde 1442 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1443
1444 ruleset_addrule($ruleset, $chain, "-j DROP");
1445 } elsif ($policy eq 'REJECT') {
1446 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1447
782c4cde 1448 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1449
1450 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1451 } else {
1452 # should not happen
1453 die "internal error: unknown policy '$policy'";
1454 }
1455}
1456
9e15114a 1457sub ruleset_create_vm_chain {
6bafd113 1458 my ($ruleset, $chain, $options, $host_options, $macaddr, $direction) = @_;
3a616aa0 1459
9e15114a 1460 ruleset_create_chain($ruleset, $chain);
b47ecc88 1461 my $accept = generate_nfqueue($options);
3a616aa0 1462
6bafd113 1463 if (!(defined($host_options->{nosmurfs}) && $host_options->{nosmurfs} == 0)) {
9e15114a 1464 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
bee633ab
DM		 1465 }
1466
ce15d90b 1467 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1468 if ($direction eq 'OUT') {
cbb5d6f3 1469 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
0f168d7b 1470 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1471 } else {
cbb5d6f3 1472 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
0f168d7b 1473 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1474 }
ce15d90b
DM		 1475 }
1476
6bafd113 1477 if ($host_options->{tcpflags}) {
9e15114a 1478 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
bee633ab
DM		 1479 }
1480
9e15114a 1481 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
cbb5d6f3 1482 if ($direction eq 'OUT') {
b47ecc88 1483 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK");
cbb5d6f3 1484 } else {
b47ecc88
AD		 1485 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1486 }
cbb5d6f3 1487
b21aca2c
DM		 1488 if ($direction eq 'OUT') {
1489 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1490 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1491 }
9e15114a 1492 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1493 }
9e15114a
DM		 1494}
1495
1496sub ruleset_generate_vm_rules {
fca39c2c 1497 my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_;
9e15114a
DM		 1498
1499 my $lc_direction = lc($direction);
c29f55c9 1500
92e976b3
DM		 1501 foreach my $rule (@$rules) {
1502 next if $rule->{iface} && $rule->{iface} ne $netid;
ea9e5116 1503 next if !$rule->{enable};
92e976b3 1504 if ($rule->{type} eq 'group') {
cbb5d6f3 1505 my $group_chain = "GROUP-$rule->{action}-$direction";
92e976b3 1506 if(!ruleset_chain_exist($ruleset, $group_chain)){
fca39c2c 1507 generate_group_rules($ruleset, $cluster_conf, $rule->{action});
92e976b3 1508 }
9e15114a 1509 ruleset_addrule($ruleset, $chain, "-j $group_chain");
b47ecc88
AD		 1510 if ($direction eq 'OUT'){
1511 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN");
1512 }else{
1513 my $accept = generate_nfqueue($options);
1514 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept");
1515 }
1516
92e976b3
DM		 1517 } else {
1518 next if $rule->{type} ne $lc_direction;
1519 if ($direction eq 'OUT') {
cbb5d6f3 1520 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 1521 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
4e6112f9 1522 } else {
b47ecc88 1523 my $accept = generate_nfqueue($options);
ba791b1f 1524 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject" }, undef, $cluster_conf);
3a616aa0 1525 }
4e6112f9 1526 }
3a616aa0 1527 }
9e15114a
DM		 1528}
1529
b47ecc88
AD		 1530sub generate_nfqueue {
1531 my ($options) = @_;
1532
1533 my $action = "";
1534 if($options->{ips}){
1535 $action = "NFQUEUE";
1536 if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1537 if(defined($3) && defined($1)) {
1538 $action .= " --queue-balance $1:$3";
1539 }elsif (defined($1)) {
1540 $action .= " --queue-num $1";
1541 }
1542 }
8dc92812 1543 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
b47ecc88
AD		 1544 }else{
1545 $action = "ACCEPT";
1546 }
1547
1548 return $action;
1549}
1550
da6fc60b
AD		 1551sub ruleset_generate_vm_ipsrules {
1552 my ($ruleset, $options, $direction, $iface, $bridge) = @_;
1553
1554 if ($options->{ips} && $direction eq 'IN') {
1555 my $nfqueue = generate_nfqueue($options);
1556
1557 if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) {
1558 ruleset_create_chain($ruleset, "PVEFW-IPS");
1559 }
1560
1561 if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) {
1562 ruleset_create_chain($ruleset, "$bridge-IPS");
1563 ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS");
1564 }
1565
1566 ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
1567 }
1568}
1569
9e15114a 1570sub generate_venet_rules_direction {
6bafd113 1571 my ($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
9e15114a 1572
5176619e 1573 parse_address_list($ip); # make sure we have a valid $ip list
9e15114a
DM		 1574
1575 my $lc_direction = lc($direction);
1576
1577 my $rules = $vmfw_conf->{rules};
1578
1579 my $options = $vmfw_conf->{options};
6bafd113 1580 my $hostfw_options = $vmfw_conf->{options};
9e15114a
DM		 1581 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1582
1583 my $chain = "venet0-$vmid-$direction";
1584
6bafd113 1585 ruleset_create_vm_chain($ruleset, $chain, $options, $hostfw_options, undef, $direction);
9e15114a 1586
fca39c2c 1587 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction);
9e15114a
DM		 1588
1589 # implement policy
1590 my $policy;
1591
1592 if ($direction eq 'OUT') {
1593 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1594 } else {
1595 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1596 }
1597
b47ecc88
AD		 1598 my $accept = generate_nfqueue($options);
1599 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1600 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1601
38485daa 1602 # plug into FORWARD, INPUT and OUTPUT chain
eba0fb64
DM		 1603 if ($direction eq 'OUT') {
1604 ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", {
1605 action => $chain,
1606 source => $ip,
1607 iface_in => 'venet0'});
38485daa
DM		 1608
1609 ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", {
1610 action => $chain,
1611 source => $ip,
1612 iface_in => 'venet0'});
eba0fb64
DM		 1613 } else {
1614 ruleset_generate_rule($ruleset, "PVEFW-FORWARD", {
1615 action => $chain,
1616 dest => $ip,
1617 iface_out => 'venet0'});
38485daa
DM		 1618
1619 ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", {
1620 action => $chain,
1621 dest => $ip,
1622 iface_out => 'venet0'});
eba0fb64 1623 }
9e15114a
DM		 1624}
1625
1626sub generate_tap_rules_direction {
6bafd113 1627 my ($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_;
9e15114a
DM		 1628
1629 my $lc_direction = lc($direction);
1630
1631 my $rules = $vmfw_conf->{rules};
1632
1633 my $options = $vmfw_conf->{options};
6bafd113 1634 my $hostfw_options = $hostfw_conf->{options};
9e15114a
DM		 1635 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1636
1637 my $tapchain = "$iface-$direction";
1638
6bafd113 1639 ruleset_create_vm_chain($ruleset, $tapchain, $options, $hostfw_options, $macaddr, $direction);
9e15114a 1640
fca39c2c 1641 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options);
3a616aa0 1642
da6fc60b
AD		 1643 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge);
1644
ccae0b50
DM		 1645 # implement policy
1646 my $policy;
1647
1648 if ($direction eq 'OUT') {
72f63fde 1649 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
ccae0b50 1650 } else {
72f63fde 1651 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
ccae0b50
DM		 1652 }
1653
b47ecc88
AD		 1654 my $accept = generate_nfqueue($options);
1655 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1656 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
3a616aa0 1657
3fa83edf 1658 # plug the tap chain to bridge chain
3cc81077 1659 if ($direction eq 'IN') {
1a301a8d 1660 ruleset_addrule($ruleset, "$bridge-IN",
3cc81077
DM		 1661 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
1662 } else {
1a301a8d 1663 ruleset_addrule($ruleset, "$bridge-OUT",
3cc81077
DM		 1664 "-m physdev --physdev-in $iface -j $tapchain");
1665 }
3a616aa0
AD		 1666}
1667
d18c1e2b 1668sub enable_host_firewall {
fca39c2c 1669 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
0bd5f137 1670
92e976b3 1671 my $options = $hostfw_conf->{options};
63324b09 1672 my $cluster_options = $cluster_conf->{options};
92e976b3 1673 my $rules = $hostfw_conf->{rules};
35f0c37e 1674 my $cluster_rules = $cluster_conf->{rules};
178a63be 1675
3fa83edf 1676 # host inbound firewall
dec84fcd
DM		 1677 my $chain = "PVEFW-HOST-IN";
1678 ruleset_create_chain($ruleset, $chain);
0bd5f137 1679
178a63be
DM		 1680 my $loglevel = get_option_log_level($options, "log_level_in");
1681
4ac863a6
DM		 1682 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1683 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1684 }
1685
fb424a00
DM		 1686 if ($options->{tcpflags}) {
1687 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1688 }
1689
7fab95bc
DM		 1690 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1691 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
dec84fcd
DM		 1692 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
1693 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1694 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1695 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1696
23e888f8
DM		 1697 # we use RETURN because we need to check also tap rules
1698 my $accept_action = 'RETURN';
1699
35f0c37e
DM		 1700 # add host rules first, so that cluster wide rules can be overwritten
1701 foreach my $rule (@$rules, @$cluster_rules) {
92e976b3 1702 next if $rule->{type} ne 'in';
ba791b1f 1703 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf);
0bd5f137
AD		 1704 }
1705
23e888f8 1706 # implement input policy
63324b09 1707 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1708 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1709
3fa83edf 1710 # host outbound firewall
aadd745e 1711 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1712 ruleset_create_chain($ruleset, $chain);
1713
178a63be
DM		 1714 $loglevel = get_option_log_level($options, "log_level_out");
1715
7fab95bc
DM		 1716 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1717 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
dec84fcd
DM		 1718 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
1719 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1720 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1721 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1722
23e888f8
DM		 1723 # we use RETURN because we may want to check other thigs later
1724 $accept_action = 'RETURN';
1725
35f0c37e
DM		 1726 # add host rules first, so that cluster wide rules can be overwritten
1727 foreach my $rule (@$rules, @$cluster_rules) {
92e976b3 1728 next if $rule->{type} ne 'out';
ba791b1f 1729 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf);
0bd5f137
AD		 1730 }
1731
23e888f8 1732 # implement output policy
63324b09 1733 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 1734 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 1735
dec84fcd
DM		 1736 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
1737 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 1738}
1739
1740sub generate_group_rules {
fca39c2c 1741 my ($ruleset, $cluster_conf, $group) = @_;
c6f5cc88 1742 die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group};
9d31b418 1743
c6f5cc88 1744 my $rules = $cluster_conf->{groups}->{$group};
6158271d 1745
3fa83edf 1746 my $chain = "GROUP-${group}-IN";
9d31b418 1747
3fa83edf 1748 ruleset_create_chain($ruleset, $chain);
b47ecc88 1749 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1750
92e976b3
DM		 1751 foreach my $rule (@$rules) {
1752 next if $rule->{type} ne 'in';
ba791b1f 1753 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418
AD		 1754 }
1755
3fa83edf 1756 $chain = "GROUP-${group}-OUT";
9d31b418 1757
3fa83edf 1758 ruleset_create_chain($ruleset, $chain);
4e6112f9 1759 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1760
92e976b3
DM		 1761 foreach my $rule (@$rules) {
1762 next if $rule->{type} ne 'out';
1763 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1764 # check also other tap rules later
cbb5d6f3 1765 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 1766 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418 1767 }
9d31b418
AD		 1768}
1769
51bae274
DM		 1770my $MAX_NETS = 32;
1771my $valid_netdev_names = {};
1772for (my $i = 0; $i < $MAX_NETS; $i++) {
1773 $valid_netdev_names->{"net$i"} = 1;
1774}
5e1267a5 1775
51bae274
DM		 1776sub parse_fw_rule {
1777 my ($line, $need_iface, $allow_groups) = @_;
5e1267a5 1778
92e976b3 1779 my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport);
51bae274 1780
11bac5c2 1781 # we can add single line comments to the end of the rule
30c1ae52 1782 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
11bac5c2
DM		 1783
1784 # we can disable a rule when prefixed with '|'
ea9e5116
DM		 1785 my $enable = 1;
1786
1787 $enable = 0 if $line =~ s/^\|//;
51bae274
DM		 1788
1789 my @data = split(/\s+/, $line);
92e976b3 1790 my $expected_elements = $need_iface ? 8 : 7;
51bae274
DM		 1791
1792 die "wrong number of rule elements\n" if scalar(@data) > $expected_elements;
1793
1794 if ($need_iface) {
92e976b3 1795 ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data
51bae274 1796 } else {
92e976b3 1797 ($type, $action, $source, $dest, $proto, $dport, $sport) = @data;
51bae274
DM		 1798 }
1799
92e976b3 1800 die "incomplete rule\n" if ! ($type && $action);
51bae274 1801
961b4928 1802 my $macro;
961b4928 1803
92e976b3
DM		 1804 $type = lc($type);
1805
1806 if ($type eq 'in' || $type eq 'out') {
1807 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1808 # OK
1809 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
e5076eee
DM		 1810 $action = $2;
1811 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1812 die "unknown macro '$1'\n" if !$preferred_name;
1813 $macro = $preferred_name;
92e976b3
DM		 1814 } else {
1815 die "unknown action '$action'\n";
1816 }
1817 } elsif ($type eq 'group') {
1818 die "wrong number of rule elements\n" if scalar(@data) != 3;
1819 die "groups disabled\n" if !$allow_groups;
1820
44be8ceb 1821 die "invalid characters in group name\n" if $action !~ m/^${security_group_name_pattern}$/;
51bae274 1822 } else {
92e976b3 1823 die "unknown rule type '$type'\n";
51bae274
DM		 1824 }
1825
1826 if ($need_iface) {
1827 $iface = undef if $iface && $iface eq '-';
51bae274
DM		 1828 }
1829
1830 $proto = undef if $proto && $proto eq '-';
54cd19a8 1831 pve_fw_verify_protocol_spec($proto) if $proto;
51bae274
DM		 1832
1833 $source = undef if $source && $source eq '-';
1834 $dest = undef if $dest && $dest eq '-';
1835
1836 $dport = undef if $dport && $dport eq '-';
1837 $sport = undef if $sport && $sport eq '-';
1838
e5076eee
DM		 1839 parse_port_name_number_or_range($dport) if defined($dport);
1840 parse_port_name_number_or_range($sport) if defined($sport);
ba791b1f 1841
d72beb8e
DM		 1842 parse_address_list($source) if $source;
1843 parse_address_list($dest) if $dest;
51bae274 1844
e5076eee 1845 return {
92e976b3 1846 type => $type,
ea9e5116 1847 enable => $enable,
11bac5c2 1848 comment => $comment,
51bae274 1849 action => $action,
e5076eee 1850 macro => $macro,
51bae274
DM		 1851 iface => $iface,
1852 source => $source,
1853 dest => $dest,
51bae274
DM		 1854 proto => $proto,
1855 dport => $dport,
1856 sport => $sport,
51bae274
DM		 1857 };
1858}
1859
2d404ffc 1860sub parse_vmfw_option {
85c6eaed
DM		 1861 my ($line) = @_;
1862
1863 my ($opt, $value);
1864
178a63be
DM		 1865 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1866
6bafd113 1867 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 1868 $opt = lc($1);
1869 $value = int($2);
178a63be
DM		 1870 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1871 $opt = lc($1);
1872 $value = $2 ? lc($3) : '';
72f63fde 1873 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 1874 $opt = lc($1);
1875 $value = uc($3);
b47ecc88
AD		 1876 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1877 $opt = lc($1);
1878 $value = $2;
9c6b6efd 1879 } else {
85c6eaed
DM		 1880 chomp $line;
1881 die "can't parse option '$line'\n"
1882 }
1883
1884 return ($opt, $value);
1885}
1886
2d404ffc
DM		 1887sub parse_hostfw_option {
1888 my ($line) = @_;
1889
1890 my ($opt, $value);
1891
1892 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1893
9166ddf8 1894 if ($line =~ m/^(enable|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) {
2d404ffc
DM		 1895 $opt = lc($1);
1896 $value = int($2);
178a63be 1897 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 1898 $opt = lc($1);
1899 $value = $2 ? lc($3) : '';
28c082a1 1900 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 1901 $opt = lc($1);
1902 $value = int($2);
2d404ffc
DM		 1903 } else {
1904 chomp $line;
1905 die "can't parse option '$line'\n"
1906 }
1907
1908 return ($opt, $value);
1909}
1910
c6f5cc88
DM		 1911sub parse_clusterfw_option {
1912 my ($line) = @_;
1913
1914 my ($opt, $value);
1915
1916 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
1917 $opt = lc($1);
1918 $value = int($2);
63324b09
DM		 1919 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1920 $opt = lc($1);
1921 $value = uc($3);
c6f5cc88
DM		 1922 } else {
1923 chomp $line;
1924 die "can't parse option '$line'\n"
1925 }
1926
1927 return ($opt, $value);
1928}
1929
92e1209b
AD		 1930sub parse_clusterfw_alias {
1931 my ($line) = @_;
1932
1933 my ($opt, $value);
1934 if ($line =~ m/^(\S+)\s(\S+)$/) {
1935 $opt = lc($1);
1936 if($2){
1937 $2 =~ s|/32$||;
1938 pve_verify_ipv4_or_cidr($2) if $2;
1939 $value = $2;
1940 }
1941 } else {
1942 chomp $line;
1943 die "can't parse option '$line'\n";
1944 }
1945
1946 return ($opt, $value);
1947}
1948
51bae274
DM		 1949sub parse_vm_fw_rules {
1950 my ($filename, $fh) = @_;
1951
92e976b3 1952 my $res = { rules => [], options => {}};
51bae274
DM		 1953
1954 my $section;
1955
5e1267a5
DM		 1956 while (defined(my $line = <$fh>)) {
1957 next if $line =~ m/^#/;
1958 next if $line =~ m/^\s*$/;
1959
961b4928
DM		 1960 my $linenr = $fh->input_line_number();
1961 my $prefix = "$filename (line $linenr)";
1962
85c6eaed 1963 if ($line =~ m/^\[(\S+)\]\s*$/i) {
5e1267a5 1964 $section = lc($1);
85c6eaed 1965 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 1966 next;
1967 }
51bae274 1968 if (!$section) {
961b4928 1969 warn "$prefix: skip line - no section";
5e1267a5
DM		 1970 next;
1971 }
1972
85c6eaed
DM		 1973 next if !$res->{$section}; # skip undefined section
1974
1975 if ($section eq 'options') {
6158271d 1976 eval {
2d404ffc 1977 my ($opt, $value) = parse_vmfw_option($line);
85c6eaed
DM		 1978 $res->{options}->{$opt} = $value;
1979 };
1980 warn "$prefix: $@" if $@;
1981 next;
1982 }
1983
e5076eee
DM		 1984 my $rule;
1985 eval { $rule = parse_fw_rule($line, 1, 1); };
51bae274 1986 if (my $err = $@) {
961b4928 1987 warn "$prefix: $err";
5e1267a5
DM		 1988 next;
1989 }
1990
e5076eee 1991 push @{$res->{$section}}, $rule;
51bae274
DM		 1992 }
1993
1994 return $res;
1995}
1996
1997sub parse_host_fw_rules {
1998 my ($filename, $fh) = @_;
1999
92e976b3 2000 my $res = { rules => [], options => {}};
51bae274
DM		 2001
2002 my $section;
2003
2004 while (defined(my $line = <$fh>)) {
2005 next if $line =~ m/^#/;
2006 next if $line =~ m/^\s*$/;
2007
961b4928
DM		 2008 my $linenr = $fh->input_line_number();
2009 my $prefix = "$filename (line $linenr)";
2010
2d404ffc 2011 if ($line =~ m/^\[(\S+)\]\s*$/i) {
51bae274 2012 $section = lc($1);
2d404ffc 2013 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 2014 next;
2015 }
51bae274 2016 if (!$section) {
961b4928 2017 warn "$prefix: skip line - no section";
5e1267a5
DM		 2018 next;
2019 }
2020
2d404ffc
DM		 2021 next if !$res->{$section}; # skip undefined section
2022
2023 if ($section eq 'options') {
2024 eval {
2d404ffc
DM		 2025 my ($opt, $value) = parse_hostfw_option($line);
2026 $res->{options}->{$opt} = $value;
2027 };
2028 warn "$prefix: $@" if $@;
2029 next;
2030 }
2031
e5076eee
DM		 2032 my $rule;
2033 eval { $rule = parse_fw_rule($line, 1, 1); };
ecbea048 2034 if (my $err = $@) {
961b4928 2035 warn "$prefix: $err";
ecbea048 2036 next;
ecbea048 2037 }
cbb5d6f3 2038
e5076eee 2039 push @{$res->{$section}}, $rule;
51bae274 2040 }
ecbea048 2041
51bae274
DM		 2042 return $res;
2043}
4cdbb3b7 2044
c6f5cc88 2045sub parse_cluster_fw_rules {
51bae274 2046 my ($filename, $fh) = @_;
5e1267a5 2047
51bae274
DM		 2048 my $section;
2049 my $group;
2050
0d22acb3
DM		 2051 my $res = {
2052 rules => [],
2053 options => {},
2054 groups => {},
2055 group_comments => {},
d72c631c
DM		 2056 ipset => {} ,
2057 ipset_comments => {},
0d22acb3 2058 };
6158271d 2059
51bae274
DM		 2060 while (defined(my $line = <$fh>)) {
2061 next if $line =~ m/^#/;
2062 next if $line =~ m/^\s*$/;
2063
961b4928
DM		 2064 my $linenr = $fh->input_line_number();
2065 my $prefix = "$filename (line $linenr)";
2066
c6f5cc88
DM		 2067 if ($line =~ m/^\[options\]$/i) {
2068 $section = 'options';
2069 next;
2070 }
2071
92e1209b
AD		 2072 if ($line =~ m/^\[aliases\]$/i) {
2073 $section = 'aliases';
2074 next;
2075 }
2076
0d22acb3 2077 if ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
c6f5cc88 2078 $section = 'groups';
92e976b3 2079 $group = lc($1);
0d22acb3 2080 my $comment = $2;
c85c87f9 2081 $res->{$section}->{$group} = [];
649e4d57
DM		 2082 $res->{group_comments}->{$group} = decode('utf8', $comment)
2083 if $comment;
51bae274
DM		 2084 next;
2085 }
34cdedfa 2086
c6f5cc88
DM		 2087 if ($line =~ m/^\[rules\]$/i) {
2088 $section = 'rules';
2089 next;
2090 }
cbb5d6f3 2091
d72c631c 2092 if ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
34cdedfa
AD		 2093 $section = 'ipset';
2094 $group = lc($1);
d72c631c 2095 my $comment = $2;
c85c87f9 2096 $res->{$section}->{$group} = [];
649e4d57
DM		 2097 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
2098 if $comment;
34cdedfa
AD		 2099 next;
2100 }
2101
c6f5cc88 2102 if (!$section) {
cbb5d6f3 2103 warn "$prefix: skip line - no section\n";
51bae274
DM		 2104 next;
2105 }
2106
c6f5cc88
DM		 2107 if ($section eq 'options') {
2108 eval {
2109 my ($opt, $value) = parse_clusterfw_option($line);
2110 $res->{options}->{$opt} = $value;
2111 };
2112 warn "$prefix: $@" if $@;
92e1209b
AD		 2113 } elsif ($section eq 'aliases') {
2114 eval {
2115 my ($opt, $value) = parse_clusterfw_alias($line);
2116 $res->{aliases}->{$opt} = $value;
2117 };
2118 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2119 } elsif ($section eq 'rules') {
2120 my $rule;
2121 eval { $rule = parse_fw_rule($line, 1, 1); };
2122 if (my $err = $@) {
2123 warn "$prefix: $err";
2124 next;
2125 }
2126 push @{$res->{$section}}, $rule;
2127 } elsif ($section eq 'groups') {
34cdedfa
AD		 2128 my $rule;
2129 eval { $rule = parse_fw_rule($line, 0, 0); };
2130 if (my $err = $@) {
2131 warn "$prefix: $err";
2132 next;
2133 }
3f95d14a 2134 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2135 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2136 # we can add single line comments to the end of the rule
2137 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2138
30f1b100 2139 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2140 my $nomatch = $1;
9d6f90e6 2141 my $cidr = $2;
2a052ee3 2142
44be8ceb 2143 if($cidr !~ m/^${ip_alias_pattern}$/) {
92e1209b 2144 $cidr =~ s|/32$||;
30f1b100 2145
92e1209b
AD		 2146 eval { pve_verify_ipv4_or_cidr($cidr); };
2147 if (my $err = $@) {
2148 warn "$prefix: $cidr - $err";
2149 next;
2150 }
2a052ee3 2151 }
2a052ee3 2152
9d6f90e6
DM		 2153 my $entry = { cidr => $cidr };
2154 $entry->{nomatch} = 1 if $nomatch;
2155 $entry->{comment} = $comment if $comment;
2156
2157 push @{$res->{$section}->{$group}}, $entry;
51bae274 2158 }
5e1267a5
DM		 2159 }
2160
2161 return $res;
2162}
2163
06320eb0
DM		 2164sub run_locked {
2165 my ($code, @param) = @_;
2166
2167 my $timeout = 10;
2168
2169 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2170
2171 die $@ if $@;
2172
2173 return $res;
2174}
2175
5e1267a5
DM		 2176sub read_local_vm_config {
2177
2178 my $openvz = {};
5e1267a5
DM		 2179 my $qemu = {};
2180
c8301d63 2181 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2182
c8301d63
DM		 2183 my $vmlist = PVE::Cluster::get_vmlist();
2184 return $vmdata if !$vmlist || !$vmlist->{ids};
2185 my $ids = $vmlist->{ids};
2186
2187 foreach my $vmid (keys %$ids) {
2188 next if !$vmid; # skip VE0
2189 my $d = $ids->{$vmid};
2190 next if !$d->{node} || $d->{node} ne $nodename;
2191 next if !$d->{type};
2192 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2193 if ($have_pve_manager) {
2194 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2195 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2196 $openvz->{$vmid} = $conf;
2197 }
c8301d63
DM		 2198 }
2199 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2200 if ($have_qemu_server) {
2201 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2202 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2203 $qemu->{$vmid} = $conf;
2204 }
c8301d63 2205 }
5e1267a5
DM		 2206 }
2207 }
d9fee004 2208
5e1267a5
DM		 2209 return $vmdata;
2210};
2211
1a301a8d
AD		 2212sub read_bridges_config {
2213
2214 my $bridgehash = {};
2215
2216 dir_glob_foreach('/sys/class/net', 'vmbr(\d+)', sub {
2217 my ($bridge) = @_;
2218
2219 dir_glob_foreach("/sys/class/net/$bridge/brif", '((eth|bond)(\d+)(\.(\d+))?)', sub {
2220 my ($interface) = @_;
2221 push @{$bridgehash->{$bridge}}, $interface;
2222 });
2223 });
2224
2225 return $bridgehash;
2226};
2227
e7b35711
DM		 2228sub load_vmfw_conf {
2229 my ($vmid) = @_;
2230
2231 my $vmfw_conf = {};
2232
2233 my $filename = "/etc/pve/firewall/$vmid.fw";
2234 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2235 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
2236 }
2237
2238 return $vmfw_conf;
2239}
2240
464f933e
DM		 2241my $format_rules = sub {
2242 my ($rules, $need_iface) = @_;
2243
2244 my $raw = '';
2245
2246 foreach my $rule (@$rules) {
c14dacdf 2247 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2248 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2249 $raw .= uc($rule->{type});
7ca36671
DM		 2250 if ($rule->{macro}) {
2251 $raw .= " $rule->{macro}($rule->{action})";
2252 } else {
2253 $raw .= " " . $rule->{action};
2254 }
464f933e 2255 $raw .= " " . ($rule->{iface} || '-') if $need_iface;
c14dacdf
DM		 2256
2257 if ($rule->{type} ne 'group') {
2258 $raw .= " " . ($rule->{source} || '-');
2259 $raw .= " " . ($rule->{dest} || '-');
2260 $raw .= " " . ($rule->{proto} || '-');
2261 $raw .= " " . ($rule->{dport} || '-');
2262 $raw .= " " . ($rule->{sport} || '-');
2263 }
2264
cbb5d6f3 2265 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2266 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2267 $raw .= "\n";
2268 } else {
c14dacdf 2269 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2270 }
2271 }
2272
2273 return $raw;
2274};
2275
2276my $format_options = sub {
68c90e21
DM		 2277 my ($options) = @_;
2278
2279 my $raw = '';
464f933e
DM		 2280
2281 $raw .= "[OPTIONS]\n\n";
2282 foreach my $opt (keys %$options) {
2283 $raw .= "$opt: $options->{$opt}\n";
2284 }
2285 $raw .= "\n";
68c90e21
DM		 2286
2287 return $raw;
464f933e
DM		 2288};
2289
9d6f90e6
DM		 2290my $format_ipset = sub {
2291 my ($options) = @_;
2292
2293 my $raw = '';
2294
6e299ae3 2295 my $nethash = {};
9d6f90e6 2296 foreach my $entry (@$options) {
6e299ae3
DM		 2297 $nethash->{$entry->{cidr}} = $entry;
2298 }
2299
2300 foreach my $cidr (sort keys %$nethash) {
2301 my $entry = $nethash->{$cidr};
9d6f90e6
DM		 2302 my $line = $entry->{nomatch} ? '!' : '';
2303 $line .= $entry->{cidr};
2304 $line .= " # " . encode('utf8', $entry->{comment})
2305 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2306 $raw .= "$line\n";
2307 }
2308
2309 return $raw;
2310};
2311
464f933e
DM		 2312sub save_vmfw_conf {
2313 my ($vmid, $vmfw_conf) = @_;
2314
2315 my $raw = '';
2316
2317 my $options = $vmfw_conf->{options};
68c90e21 2318 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2319
464f933e
DM		 2320 my $rules = $vmfw_conf->{rules};
2321 if (scalar(@$rules)) {
2322 $raw .= "[RULES]\n\n";
2323 $raw .= &$format_rules($rules, 1);
2324 $raw .= "\n";
2325 }
2326
2327 my $filename = "/etc/pve/firewall/$vmid.fw";
2328 PVE::Tools::file_set_contents($filename, $raw);
2329}
2330
6fc63ffd 2331sub read_vm_firewall_configs {
5e1267a5 2332 my ($vmdata) = @_;
6fc63ffd 2333 my $vmfw_configs = {};
c8301d63 2334
5e1267a5 2335 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
e7b35711
DM		 2336 my $vmfw_conf = load_vmfw_conf($vmid);
2337 next if !$vmfw_conf->{options}; # skip if file does not exists
2338 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2339 }
2340
6fc63ffd 2341 return $vmfw_configs;
5e1267a5
DM		 2342}
2343
2d404ffc
DM		 2344sub get_option_log_level {
2345 my ($options, $k) = @_;
2346
2347 my $v = $options->{$k};
178a63be 2348 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2349
2350 return undef if $v eq '' || $v eq 'nolog';
2351
2352 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2353
2354 return $v if ($v >= 0) && ($v <= 7);
2355
2356 warn "unknown log level ($k = '$v')\n";
2357
2358 return undef;
2359}
2360
d8f2505e 2361sub generate_std_chains {
2d404ffc 2362 my ($ruleset, $options) = @_;
cbb5d6f3 2363
2d404ffc
DM		 2364 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2365
2366 # same as shorewall smurflog.
782c4cde 2367 my $chain = 'PVEFW-smurflog';
12f3796e 2368 $pve_std_chains->{$chain} = [];
782c4cde
DM		 2369
2370 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2371 push @{$pve_std_chains->{$chain}}, "-j DROP";
2d404ffc
DM		 2372
2373 # same as shorewall logflags action.
2374 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2375 $chain = 'PVEFW-logflags';
12f3796e
DM		 2376 $pve_std_chains->{$chain} = [];
2377
782c4cde
DM		 2378 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2379 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2380 push @{$pve_std_chains->{$chain}}, "-j DROP";
d8f2505e
DM		 2381
2382 foreach my $chain (keys %$pve_std_chains) {
2383 ruleset_create_chain($ruleset, $chain);
2384 foreach my $rule (@{$pve_std_chains->{$chain}}) {
2385 if (ref($rule)) {
2386 ruleset_generate_rule($ruleset, $chain, $rule);
2387 } else {
2388 ruleset_addrule($ruleset, $chain, $rule);
2389 }
2390 }
2391 }
2392}
2393
34cdedfa 2394sub generate_ipset_chains {
dd7a13fd 2395 my ($ipset_ruleset, $fw_conf) = @_;
34cdedfa 2396
dd7a13fd 2397 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
92e1209b 2398 generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}, $fw_conf->{aliases});
34cdedfa
AD		 2399 }
2400}
2401
2402sub generate_ipset {
92e1209b 2403 my ($ipset_ruleset, $name, $options, $aliases) = @_;
34cdedfa 2404
dd7a13fd
DM		 2405 my $hashsize = scalar(@$options);
2406 if ($hashsize <= 64) {
2a052ee3 2407 $hashsize = 64;
dd7a13fd 2408 } else {
2a052ee3
AD		 2409 $hashsize = round_powerof2($hashsize);
2410 }
2411
dd7a13fd 2412 push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize";
34cdedfa 2413
30f1b100
DM		 2414 # remove duplicates
2415 my $nethash = {};
9d6f90e6 2416 foreach my $entry (@$options) {
92e1209b 2417 my $cidr = $entry->{cidr};
44be8ceb 2418 if ($cidr =~ m/^${ip_alias_pattern}$/){
92e1209b
AD		 2419 die "no such alias $cidr" if !$aliases->{$cidr};
2420 $entry->{cidr} = $aliases->{$cidr};
2421 }
30f1b100
DM		 2422 $nethash->{$entry->{cidr}} = $entry;
2423 }
2424
2425 foreach my $cidr (sort keys %$nethash) {
2426 my $entry = $nethash->{$cidr};
2427
9d6f90e6
DM		 2428 my $cmd = "add $name $cidr";
2429 if ($entry->{nomatch}) {
2430 if ($feature_ipset_nomatch) {
2431 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2432 } else {
2433 warn "ignore !$cidr - nomatch not supported by kernel\n";
2434 }
2435 } else {
2436 push @{$ipset_ruleset->{$name}}, $cmd;
2437 }
34cdedfa 2438 }
2a052ee3
AD		 2439}
2440
2441sub round_powerof2 {
dd7a13fd 2442 my ($int) = @_;
2a052ee3 2443
dd7a13fd
DM		 2444 $int--;
2445 $int |= $int >> $_ foreach (1,2,4,8,16);
2446 return ++$int;
34cdedfa
AD		 2447}
2448
6b9f68a2
DM		 2449sub save_pvefw_status {
2450 my ($status) = @_;
2451
2452 die "unknown status '$status' - internal error"
2453 if $status !~ m/^(stopped|active)$/;
2454
2455 mkdir dirname($pve_fw_status_filename);
2456 PVE::Tools::file_set_contents($pve_fw_status_filename, $status);
2457}
2458
2459sub read_pvefw_status {
2460
2461 my $status = 'unknown';
2462
2463 return 'stopped' if ! -f $pve_fw_status_filename;
2464
2465 eval {
2466 $status = PVE::Tools::file_get_contents($pve_fw_status_filename);
2467 };
2468 warn $@ if $@;
2469
2470 return $status;
2471}
2472
530c005e
DM		 2473# fixme: move to pve-common PVE::ProcFSTools
2474sub read_proc_net_route {
2475 my $filename = "/proc/net/route";
2476
2477 my $res = {};
2478
2479 my $fh = IO::File->new ($filename, "r");
2480 return $res if !$fh;
2481
2482 my $int_to_quad = sub {
2483 return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0);
2484 };
2485
2486 while (defined(my $line = <$fh>)) {
2487 next if $line =~/^Iface\s+Destination/; # skip head
2488 my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8];
2489 push @{$res->{$iface}}, {
2490 dest => &$int_to_quad(hex($dest)),
2491 gateway => &$int_to_quad(hex($gateway)),
2492 mask => &$int_to_quad(hex($mask)),
2493 metric => $metric,
2494 mtu => $mtu,
2495 };
2496 }
2497
2498 return $res;
2499}
2500
fca39c2c 2501sub load_clusterfw_conf {
530c005e 2502
fca39c2c
DM		 2503 my $cluster_conf = {};
2504 if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) {
c6f5cc88 2505 $cluster_conf = parse_cluster_fw_rules($clusterfw_conf_filename, $fh);
51bae274 2506 }
5e1267a5 2507
fca39c2c 2508 return $cluster_conf;
e5d76bde
DM		 2509}
2510
fca39c2c
DM		 2511sub save_clusterfw_conf {
2512 my ($cluster_conf) = @_;
9c7e0858
DM		 2513
2514 my $raw = '';
9c7e0858 2515
c6f5cc88 2516 my $options = $cluster_conf->{options};
68c90e21 2517 $raw .= &$format_options($options) if scalar(keys %$options);
9c7e0858 2518
9d6f90e6 2519 foreach my $ipset (sort keys %{$cluster_conf->{ipset}}) {
d72c631c 2520 if (my $comment = $cluster_conf->{ipset_comments}->{$ipset}) {
649e4d57
DM		 2521 my $utf8comment = encode('utf8', $comment);
2522 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
d72c631c
DM		 2523 } else {
2524 $raw .= "[IPSET $ipset]\n\n";
2525 }
9d6f90e6
DM		 2526 my $options = $cluster_conf->{ipset}->{$ipset};
2527 $raw .= &$format_ipset($options);
2528 $raw .= "\n";
2529 }
c6f5cc88
DM		 2530
2531 my $rules = $cluster_conf->{rules};
2532 if (scalar(@$rules)) {
2533 $raw .= "[RULES]\n\n";
63c91681 2534 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 2535 $raw .= "\n";
2536 }
2537
2538 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
2539 my $rules = $cluster_conf->{groups}->{$group};
0d22acb3 2540 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
649e4d57
DM		 2541 my $utf8comment = encode('utf8', $comment);
2542 $raw .= "[group $group] # $utf8comment\n\n";
0d22acb3
DM		 2543 } else {
2544 $raw .= "[group $group]\n\n";
2545 }
2546
63c91681 2547 $raw .= &$format_rules($rules, 0);
9c7e0858
DM		 2548 $raw .= "\n";
2549 }
2550
fca39c2c 2551 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 2552}
2553
8b27beb9
DM		 2554sub load_hostfw_conf {
2555
2556 my $hostfw_conf = {};
63c91681
DM		 2557 if (my $fh = IO::File->new($hostfw_conf_filename, O_RDONLY)) {
2558 $hostfw_conf = parse_host_fw_rules($hostfw_conf_filename, $fh);
8b27beb9
DM		 2559 }
2560 return $hostfw_conf;
2561}
2562
63c91681
DM		 2563sub save_hostfw_conf {
2564 my ($hostfw_conf) = @_;
2565
2566 my $raw = '';
2567
2568 my $options = $hostfw_conf->{options};
68c90e21 2569 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2570
63c91681
DM		 2571 my $rules = $hostfw_conf->{rules};
2572 if (scalar(@$rules)) {
2573 $raw .= "[RULES]\n\n";
2574 $raw .= &$format_rules($rules, 1);
2575 $raw .= "\n";
2576 }
2577
2578 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
2579}
2580
e5d76bde 2581sub compile {
3dfa8a7f
DM		 2582 my ($cluster_conf, $hostfw_conf) = @_;
2583
2584 $cluster_conf = load_clusterfw_conf() if !$cluster_conf;
2585 $hostfw_conf = load_hostfw_conf() if !$hostfw_conf;
2586
e5d76bde
DM		 2587 my $vmdata = read_local_vm_config();
2588 my $vmfw_configs = read_vm_firewall_configs($vmdata);
2589
2590 my $routing_table = read_proc_net_route();
1a301a8d
AD		 2591
2592 my $bridges_config = read_bridges_config();
e5d76bde 2593
34cdedfa 2594 my $ipset_ruleset = {};
fca39c2c 2595 generate_ipset_chains($ipset_ruleset, $cluster_conf);
34cdedfa 2596
3fa83edf
DM		 2597 my $ruleset = {};
2598
dec84fcd
DM		 2599 ruleset_create_chain($ruleset, "PVEFW-INPUT");
2600 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 2601
fadb13dd 2602 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3fa83edf 2603
8b27beb9 2604 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 2605
92e976b3 2606 generate_std_chains($ruleset, $hostfw_options);
fadb13dd 2607
6d2ab017 2608 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 2609
fca39c2c 2610 enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable;
3fa83edf 2611
6158271d 2612 # generate firewall rules for QEMU VMs
3fa83edf
DM		 2613 foreach my $vmid (keys %{$vmdata->{qemu}}) {
2614 my $conf = $vmdata->{qemu}->{$vmid};
6fc63ffd 2615 my $vmfw_conf = $vmfw_configs->{$vmid};
fa9c4a6f
DM		 2616 next if !$vmfw_conf;
2617 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
3fa83edf
DM		 2618
2619 foreach my $netid (keys %$conf) {
2620 next if $netid !~ m/^net(\d+)$/;
2621 my $net = PVE::QemuServer::parse_net($conf->{$netid});
2622 next if !$net;
2623 my $iface = "tap${vmid}i$1";
5e1267a5 2624
3fa83edf
DM		 2625 my $bridge = $net->{bridge};
2626 next if !$bridge; # fixme: ?
2627
2628 $bridge .= "v$net->{tag}" if $net->{tag};
2629
1a301a8d 2630 generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config);
3fa83edf 2631
c29f55c9 2632 my $macaddr = $net->{macaddr};
6bafd113 2633 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2634 $vmfw_conf, $vmid, $bridge, 'IN');
6bafd113 2635 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2636 $vmfw_conf, $vmid, $bridge, 'OUT');
3fa83edf
DM		 2637 }
2638 }
c8301d63
DM		 2639
2640 # generate firewall rules for OpenVZ containers
2641 foreach my $vmid (keys %{$vmdata->{openvz}}) {
2642 my $conf = $vmdata->{openvz}->{$vmid};
2643
2644 my $vmfw_conf = $vmfw_configs->{$vmid};
2645 next if !$vmfw_conf;
2646 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
2647
2648 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
2649 my $ip = $conf->{ip_address}->{value};
6bafd113
DM		 2650 generate_venet_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'IN');
2651 generate_venet_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'OUT');
c8301d63
DM		 2652 }
2653
2654 if ($conf->{netif} && $conf->{netif}->{value}) {
2655 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
c8301d63
DM		 2656 foreach my $netid (keys %$netif) {
2657 my $d = $netif->{$netid};
2658 my $bridge = $d->{bridge};
2659 if (!$bridge) {
2660 warn "no bridge device for CT $vmid iface '$netid'\n";
2661 next; # fixme?
2662 }
cbb5d6f3 2663
1a301a8d 2664 generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config);
530c005e 2665
12d0f130 2666 my $macaddr = $d->{mac};
c8301d63 2667 my $iface = $d->{host_ifname};
6bafd113 2668 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2669 $vmfw_conf, $vmid, $bridge, 'IN');
6bafd113 2670 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
782c4cde 2671 $vmfw_conf, $vmid, $bridge, 'OUT');
c8301d63
DM		 2672 }
2673 }
2674 }
c0413e35 2675
cc10e5d7 2676 if($hostfw_options->{optimize}){
da6fc60b 2677
e9d9a73e 2678 my $accept = ruleset_chain_exist($ruleset, "PVEFW-IPS") ? "PVEFW-IPS" : "ACCEPT";
da6fc60b 2679 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
cc10e5d7
AD		 2680 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP");
2681 }
2682
eba0fb64
DM		 2683 # fixme: what log level should we use here?
2684 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2685
c98c037d
DM		 2686 # fixme: should we really block inter-bridge traffic?
2687
2688 # always allow traffic from containers?
2689 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN");
2690
eba0fb64 2691 # disable interbridge routing
cbb5d6f3 2692 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop");
eba0fb64 2693 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop");
cbb5d6f3
DM		 2694 ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+");
2695 ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+");
2696 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP");
eba0fb64
DM		 2697 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP");
2698
3dfa8a7f 2699 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 2700}
2701
2702sub get_ruleset_status {
4bd0a9c4 2703 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 2704
2705 my $statushash = {};
2706
2707 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 2708 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 2709
3fa83edf
DM		 2710 $statushash->{$chain}->{sig} = $sig;
2711
2712 my $oldsig = $active_chains->{$chain};
2713 if (!defined($oldsig)) {
2714 $statushash->{$chain}->{action} = 'create';
2715 } else {
2716 if ($oldsig eq $sig) {
2717 $statushash->{$chain}->{action} = 'exists';
2718 } else {
2719 $statushash->{$chain}->{action} = 'update';
2720 }
2721 }
2722 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2723 foreach my $cmd (@{$ruleset->{$chain}}) {
2724 print "\t$cmd\n" if $verbose;
2725 }
2726 }
2727
2728 foreach my $chain (sort keys %$active_chains) {
2729 if (!defined($ruleset->{$chain})) {
2730 my $sig = $active_chains->{$chain};
2731 $statushash->{$chain}->{action} = 'delete';
2732 $statushash->{$chain}->{sig} = $sig;
2733 print "delete $chain ($sig)\n" if $verbose;
2734 }
6158271d 2735 }
2a052ee3 2736
3fa83edf
DM		 2737 return $statushash;
2738}
2739
3fa83edf
DM		 2740sub print_sig_rule {
2741 my ($chain, $sig) = @_;
2742
09d5f68e
DM		 2743 # We just use this to store a SHA1 checksum used to detect changes
2744 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 2745}
2746
df7cb349 2747sub get_ruleset_cmdlist {
a84f4d96 2748 my ($ruleset, $verbose) = @_;
3fa83edf 2749
3fa83edf 2750 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 2751
4bd0a9c4
DM		 2752 my ($active_chains, $hooks) = iptables_get_chains();
2753 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 2754
2755 # create missing chains first
2756 foreach my $chain (sort keys %$ruleset) {
2757 my $stat = $statushash->{$chain};
2758 die "internal error" if !$stat;
2759 next if $stat->{action} ne 'create';
886aba9c 2760
3fa83edf
DM		 2761 $cmdlist .= ":$chain - [0:0]\n";
2762 }
2763
4bd0a9c4
DM		 2764 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2765 if (!$hooks->{$h}) {
2766 $cmdlist .= "-A $h -j PVEFW-$h\n";
2767 }
3fa83edf
DM		 2768 }
2769
2770 foreach my $chain (sort keys %$ruleset) {
2771 my $stat = $statushash->{$chain};
2772 die "internal error" if !$stat;
2773
2774 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2775 $cmdlist .= "-F $chain\n";
2776 foreach my $cmd (@{$ruleset->{$chain}}) {
2777 $cmdlist .= "$cmd\n";
2778 }
2779 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2780 } elsif ($stat->{action} eq 'delete') {
f5d28682 2781 die "internal error"; # this should not happen
3fa83edf
DM		 2782 } elsif ($stat->{action} eq 'exists') {
2783 # do nothing
2784 } else {
2785 die "internal error - unknown status '$stat->{action}'";
2786 }
2787 }
2788
f5d28682
DM		 2789 foreach my $chain (keys %$statushash) {
2790 next if $statushash->{$chain}->{action} ne 'delete';
2791 $cmdlist .= "-F $chain\n";
2792 }
2793 foreach my $chain (keys %$statushash) {
2794 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 2795 next if $chain eq 'PVEFW-INPUT';
2796 next if $chain eq 'PVEFW-OUTPUT';
2797 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 2798 $cmdlist .= "-X $chain\n";
2799 }
2800
3f95d14a 2801 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 2802
3fa83edf
DM		 2803 $cmdlist .= "COMMIT\n";
2804
3f95d14a 2805 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 2806}
2807
34cdedfa 2808sub get_ipset_cmdlist {
dd7a13fd 2809 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 2810
2811 my $cmdlist = "";
2812
dd7a13fd
DM		 2813 my $delete_cmdlist = "";
2814
4bd0a9c4
DM		 2815 my $active_chains = ipset_get_chains();
2816 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 2817
30f1b100
DM		 2818 # remove stale _swap chains
2819 foreach my $chain (keys %$active_chains) {
2820 if ($chain =~ m/^PVEFW-\S+_swap$/) {
2821 $cmdlist .= "destroy $chain\n";
2822 }
2823 }
2824
dd7a13fd
DM		 2825 foreach my $chain (sort keys %$ruleset) {
2826 my $stat = $statushash->{$chain};
2827 die "internal error" if !$stat;
2a052ee3 2828
dd7a13fd
DM		 2829 if ($stat->{action} eq 'create') {
2830 foreach my $cmd (@{$ruleset->{$chain}}) {
34cdedfa
AD		 2831 $cmdlist .= "$cmd\n";
2832 }
dd7a13fd 2833 }
34cdedfa 2834
dd7a13fd
DM		 2835 if ($stat->{action} eq 'update') {
2836 my $chain_swap = $chain."_swap";
cbb5d6f3 2837
dd7a13fd
DM		 2838 foreach my $cmd (@{$ruleset->{$chain}}) {
2839 $cmd =~ s/$chain/$chain_swap/;
2840 $cmdlist .= "$cmd\n";
34cdedfa 2841 }
dd7a13fd
DM		 2842 $cmdlist .= "swap $chain_swap $chain\n";
2843 $cmdlist .= "flush $chain_swap\n";
2844 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 2845 }
34cdedfa 2846
dd7a13fd 2847 }
3f95d14a 2848
dd7a13fd
DM		 2849 foreach my $chain (keys %$statushash) {
2850 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 2851
dd7a13fd
DM		 2852 $delete_cmdlist .= "flush $chain\n";
2853 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 2854 }
2855
dd7a13fd 2856 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 2857
dd7a13fd 2858 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 2859}
2860
6b9f68a2 2861sub apply_ruleset {
34cdedfa 2862 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
6b9f68a2
DM		 2863
2864 enable_bridge_firewall();
2865
cbb5d6f3 2866 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 2867 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 2868
81a0bf43 2869 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
2a052ee3 2870
81a0bf43
DM		 2871 if ($verbose) {
2872 if ($ipset_changes) {
2873 print "ipset changes:\n";
2874 print $ipset_create_cmdlist if $ipset_create_cmdlist;
2875 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
2876 }
3f95d14a 2877
81a0bf43
DM		 2878 if ($changes) {
2879 print "iptables changes:\n";
2880 print $cmdlist;
2881 }
2882 }
3fa83edf 2883
2a052ee3 2884 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 2885
3fa83edf
DM		 2886 iptables_restore_cmdlist($cmdlist);
2887
dd7a13fd 2888 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 2889
6158271d 2890 # test: re-read status and check if everything is up to date
4bd0a9c4 2891 my $active_chains = iptables_get_chains();
81a0bf43 2892 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 2893
2894 my $errors;
2895 foreach my $chain (sort keys %$ruleset) {
2896 my $stat = $statushash->{$chain};
2897 if ($stat->{action} ne 'exists') {
2898 warn "unable to update chain '$chain'\n";
2899 $errors = 1;
2900 }
2901 }
b6360c3f 2902
3fa83edf 2903 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 2904
2905 update_nf_conntrack_max($hostfw_conf);
2906
2907 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
2908
b6360c3f
DM		 2909}
2910
490cdead
DM		 2911sub update_nf_conntrack_max {
2912 my ($hostfw_conf) = @_;
2913
2914 my $max = 65536; # reasonable default
2915
2916 my $options = $hostfw_conf->{options} || {};
2917
2918 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
2919 $max = $options->{nf_conntrack_max};
2920 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2921 }
2922
2923 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
2924 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
2925
2926 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
2927
2928 if ($current != $max) {
2929 my $hashsize = int($max/4);
2930 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
2931 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
2932 }
2933}
2934
28c082a1
AD		 2935sub update_nf_conntrack_tcp_timeout_established {
2936 my ($hostfw_conf) = @_;
2937
2938 my $options = $hostfw_conf->{options} || {};
2939
2940 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
2941
2942 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
2943}
2944
c4a2e5ae
DM		 2945sub remove_pvefw_chains {
2946
2947 my ($chash, $hooks) = iptables_get_chains();
2948 my $cmdlist = "*filter\n";
2949
2950 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2951 if ($hooks->{$h}) {
2952 $cmdlist .= "-D $h -j PVEFW-$h\n";
2953 }
2954 }
cbb5d6f3 2955
c4a2e5ae
DM		 2956 foreach my $chain (keys %$chash) {
2957 $cmdlist .= "-F $chain\n";
2958 }
2959
2960 foreach my $chain (keys %$chash) {
2961 $cmdlist .= "-X $chain\n";
2962 }
2963 $cmdlist .= "COMMIT\n";
2964
2965 iptables_restore_cmdlist($cmdlist);
2966}
2967
6b9f68a2
DM		 2968sub update {
2969 my ($start, $verbose) = @_;
2970
2971 my $code = sub {
3dfa8a7f
DM		 2972
2973 my $cluster_conf = load_clusterfw_conf();
2974 my $cluster_options = $cluster_conf->{options};
2975
51e57fee 2976 my $enable = $cluster_options->{enable};
3dfa8a7f 2977
6b9f68a2
DM		 2978 my $status = read_pvefw_status();
2979
3dfa8a7f
DM		 2980 die "Firewall is disabled - cannot start\n" if !$enable && $start;
2981
2982 if (!$enable) {
b22130d3 2983 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 2984 print "Firewall disabled\n" if $verbose;
2985 return;
2986 }
2987
2988 my $hostfw_conf = load_hostfw_conf();
2989
2990 my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 2991
6b9f68a2
DM		 2992 if ($start || $status eq 'active') {
2993
2994 save_pvefw_status('active') if ($status ne 'active');
2995
34cdedfa 2996 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose);
6b9f68a2
DM		 2997 } else {
2998 print "Firewall not active (status = $status)\n" if $verbose;
2999 }
3000 };
3001
3002 run_locked($code);
3003}
3004
3005
b6360c3f 30061;
Firewall test scripts