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remove unused ruleset_generate_cmdstr
[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;
6d959e3f 8use Socket qw(AF_INET6 inet_ntop inet_pton);
c8301d63 9use PVE::INotify;
7ca36671 10use PVE::Exception qw(raise raise_param_exc);
e74a87f5 11use PVE::JSONSchema qw(register_standard_option get_standard_option);
c8301d63 12use PVE::Cluster;
5f0a912c 13use PVE::ProcFSTools;
70e524eb 14use PVE::Tools qw($IPV4RE $IPV6RE);
2e1ae6b9 15use PVE::Network;
eedcb564 16use PVE::SafeSyslog;
6b9f68a2 17use File::Basename;
5e1267a5
DM		 18use File::Path;
19use IO::File;
ecbea048 20use Net::IP;
1a301a8d 21use PVE::Tools qw(run_command lock_file dir_glob_foreach);
30c1ae52 22use Encode;
cfd7cd9c 23use Storable qw(dclone);
ecbea048 24
63c91681 25my $hostfw_conf_filename = "/etc/pve/local/host.fw";
21053409
DM		 26my $pvefw_conf_dir = "/etc/pve/firewall";
27my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
fca39c2c 28
fdefeeab 29# dynamically include PVE::QemuServer and PVE::LXC
d9fee004
DM		 30# to avoid dependency problems
31my $have_qemu_server;
32eval {
33 require PVE::QemuServer;
b5a16dd3 34 require PVE::QemuConfig;
d9fee004
DM		 35 $have_qemu_server = 1;
36};
37
3b4882dc
AG		 38my $have_lxc;
39eval {
40 require PVE::LXC;
41 $have_lxc = 1;
42};
43
44
259db1e6
DM		 45my $pve_fw_status_dir = "/var/lib/pve-firewall";
46
47mkdir $pve_fw_status_dir; # make sure this exists
48
351052d1
DM		 49my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
50my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
f9792937 51our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
351052d1
DM		 52
53my $max_alias_name_length = 64;
54my $max_ipset_name_length = 64;
5c53cde4 55my $max_group_name_length = 18;
351052d1 56
48e3963e
WB		 57my $PROTOCOLS_WITH_PORTS = {
58 udp => 1, 17 => 1,
59 udplite => 1, 136 => 1,
60 tcp => 1, 6 => 1,
61 dccp => 1, 33 => 1,
62 sctp => 1, 132 => 1,
63};
64
ae029a88
DM		 65PVE::JSONSchema::register_format('IPorCIDR', \&pve_verify_ip_or_cidr);
66sub pve_verify_ip_or_cidr {
009ee3ac
DM		 67 my ($cidr, $noerr) = @_;
68
70e524eb 69 if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
e34d0e58 70 return $cidr if Net::IP->new($cidr);
7c619bbb
DM		 71 return undef if $noerr;
72 die Net::IP::Error() . "\n";
73 }
74 return undef if $noerr;
75 die "value does not look like a valid IP address or CIDR network\n";
76}
77
ae029a88
DM		 78PVE::JSONSchema::register_format('IPorCIDRorAlias', \&pve_verify_ip_or_cidr_or_alias);
79sub pve_verify_ip_or_cidr_or_alias {
7c619bbb
DM		 80 my ($cidr, $noerr) = @_;
81
82 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
83
ae029a88 84 return pve_verify_ip_or_cidr($cidr, $noerr);
009ee3ac
DM		 85}
86
e74a87f5
DM		 87PVE::JSONSchema::register_standard_option('ipset-name', {
88 description => "IP set name.",
89 type => 'string',
351052d1 90 pattern => $ipset_name_pattern,
387d0ffc 91 minLength => 2,
351052d1 92 maxLength => $max_ipset_name_length,
387d0ffc
DM		 93});
94
81d574a7
DM		 95PVE::JSONSchema::register_standard_option('pve-fw-alias', {
96 description => "Alias name.",
97 type => 'string',
351052d1 98 pattern => $ip_alias_pattern,
81d574a7 99 minLength => 2,
351052d1 100 maxLength => $max_alias_name_length,
81d574a7
DM		 101});
102
6302c41f
DM		 103PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
104 description => "Log level.",
e34d0e58 105 type => 'string',
6302c41f
DM		 106 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
107 optional => 1,
108});
109
387d0ffc
DM		 110PVE::JSONSchema::register_standard_option('pve-security-group-name', {
111 description => "Security Group name.",
112 type => 'string',
44be8ceb 113 pattern => $security_group_name_pattern,
387d0ffc 114 minLength => 2,
351052d1 115 maxLength => $max_group_name_length,
e74a87f5 116});
009ee3ac 117
cbb5d6f3
DM		 118my $feature_ipset_nomatch = 0;
119eval {
120 my (undef, undef, $release) = POSIX::uname();
121 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
122 my ($major, $minor) = ($1, $2);
123 $feature_ipset_nomatch = 1 if ($major > 3) ||
124 ($major == 3 && $minor >= 7);
125 }
126
127};
128
c8301d63
DM		 129my $nodename = PVE::INotify::nodename();
130
06320eb0
DM		 131my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
132
56f313f7 133my $default_log_level = 'nolog'; # avoid logs by default
2d404ffc
DM		 134
135my $log_level_hash = {
136 debug => 7,
137 info => 6,
138 notice => 5,
139 warning => 4,
140 err => 3,
141 crit => 2,
142 alert => 1,
143 emerg => 0,
144};
145
044409e5
TW		 146# %rule
147#
148# name => optional
30c390f9 149# enable => [0|1]
044409e5
TW		 150# action =>
151# proto =>
30c390f9
TW		 152# sport => port[,port[,port]].. or port:port
153# dport => port[,port[,port]].. or port:port
044409e5
TW		 154# log => optional, loglevel
155# logmsg => optional, logmsg - overwrites default
30c390f9
TW		 156# iface_in => incomin interface
157# iface_out => outgoing interface
044409e5
TW		 158# match => optional, overwrites generation of match
159# target => optional, overwrites action
160
35d1d6da
DM		 161# we need to overwrite some macros for ipv6
162my $pve_ipv6fw_macros = {
163 'Ping' => [
164 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
165 ],
b3d75afb
WB		 166 'NeighborDiscovery' => [
167 "IPv6 neighbor solicitation, neighbor and router advertisement",
c71cdd44 168 { action => 'PARAM', proto => 'icmpv6', dport => 'router-solicitation' },
b3d75afb
WB		 169 { action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' },
170 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' },
171 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' },
172 ],
a42e9763 173 'DHCPv6' => [
24dd51c2 174 "DHCPv6 traffic",
a42e9763
WB		 175 { action => 'PARAM', proto => 'udp', dport => '546:547', sport => '546:547' },
176 ],
35d1d6da
DM		 177 'Trcrt' => [
178 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
179 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
180 ],
181 };
182
857f62c8 183# imported/converted from: /usr/share/shorewall/macro.*
961b4928 184my $pve_fw_macros = {
857f62c8 185 'Amanda' => [
ebd54ae9 186 "Amanda Backup",
857f62c8
DM		 187 { action => 'PARAM', proto => 'udp', dport => '10080' },
188 { action => 'PARAM', proto => 'tcp', dport => '10080' },
189 ],
190 'Auth' => [
ebd54ae9 191 "Auth (identd) traffic",
857f62c8
DM		 192 { action => 'PARAM', proto => 'tcp', dport => '113' },
193 ],
194 'BGP' => [
ebd54ae9 195 "Border Gateway Protocol traffic",
857f62c8
DM		 196 { action => 'PARAM', proto => 'tcp', dport => '179' },
197 ],
198 'BitTorrent' => [
ebd54ae9 199 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 200 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 201 { action => 'PARAM', proto => 'udp', dport => '6881' },
202 ],
203 'BitTorrent32' => [
ebd54ae9 204 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 205 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
206 { action => 'PARAM', proto => 'udp', dport => '6881' },
207 ],
06ba9c44
AG		 208 'Ceph' => [
209 "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)",
210 { action => 'PARAM', proto => 'tcp', dport => '6789' },
211 { action => 'PARAM', proto => 'tcp', dport => '6800:7300' },
212 ],
857f62c8 213 'CVS' => [
ebd54ae9 214 "Concurrent Versions System pserver traffic",
857f62c8
DM		 215 { action => 'PARAM', proto => 'tcp', dport => '2401' },
216 ],
217 'Citrix' => [
ebd54ae9 218 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 219 { action => 'PARAM', proto => 'tcp', dport => '1494' },
220 { action => 'PARAM', proto => 'udp', dport => '1604' },
221 { action => 'PARAM', proto => 'tcp', dport => '2598' },
222 ],
223 'DAAP' => [
ebd54ae9 224 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 225 { action => 'PARAM', proto => 'tcp', dport => '3689' },
226 { action => 'PARAM', proto => 'udp', dport => '3689' },
227 ],
228 'DCC' => [
ebd54ae9 229 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 230 { action => 'PARAM', proto => 'tcp', dport => '6277' },
231 ],
232 'DHCPfwd' => [
d2c3266d 233 "Forwarded DHCP traffic",
857f62c8 234 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
857f62c8
DM		 235 ],
236 'DNS' => [
ebd54ae9 237 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 238 { action => 'PARAM', proto => 'udp', dport => '53' },
239 { action => 'PARAM', proto => 'tcp', dport => '53' },
240 ],
241 'Distcc' => [
ebd54ae9 242 "Distributed Compiler service",
857f62c8
DM		 243 { action => 'PARAM', proto => 'tcp', dport => '3632' },
244 ],
857f62c8 245 'FTP' => [
ebd54ae9 246 "File Transfer Protocol",
857f62c8
DM		 247 { action => 'PARAM', proto => 'tcp', dport => '21' },
248 ],
249 'Finger' => [
ebd54ae9 250 "Finger protocol (RFC 742)",
857f62c8
DM		 251 { action => 'PARAM', proto => 'tcp', dport => '79' },
252 ],
253 'GNUnet' => [
ebd54ae9 254 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 255 { action => 'PARAM', proto => 'tcp', dport => '2086' },
256 { action => 'PARAM', proto => 'udp', dport => '2086' },
257 { action => 'PARAM', proto => 'tcp', dport => '1080' },
258 { action => 'PARAM', proto => 'udp', dport => '1080' },
259 ],
260 'GRE' => [
d2c3266d 261 "Generic Routing Encapsulation tunneling protocol",
857f62c8 262 { action => 'PARAM', proto => '47' },
857f62c8
DM		 263 ],
264 'Git' => [
ebd54ae9 265 "Git distributed revision control traffic",
857f62c8
DM		 266 { action => 'PARAM', proto => 'tcp', dport => '9418' },
267 ],
857f62c8 268 'HKP' => [
ebd54ae9 269 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 270 { action => 'PARAM', proto => 'tcp', dport => '11371' },
271 ],
272 'HTTP' => [
ebd54ae9 273 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 274 { action => 'PARAM', proto => 'tcp', dport => '80' },
275 ],
857f62c8 276 'HTTPS' => [
ebd54ae9 277 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 278 { action => 'PARAM', proto => 'tcp', dport => '443' },
279 ],
280 'ICPV2' => [
ebd54ae9 281 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 282 { action => 'PARAM', proto => 'udp', dport => '3130' },
283 ],
284 'ICQ' => [
ebd54ae9 285 "AOL Instant Messenger traffic",
857f62c8
DM		 286 { action => 'PARAM', proto => 'tcp', dport => '5190' },
287 ],
288 'IMAP' => [
ebd54ae9 289 "Internet Message Access Protocol",
857f62c8
DM		 290 { action => 'PARAM', proto => 'tcp', dport => '143' },
291 ],
292 'IMAPS' => [
ebd54ae9 293 "Internet Message Access Protocol over SSL",
857f62c8
DM		 294 { action => 'PARAM', proto => 'tcp', dport => '993' },
295 ],
296 'IPIP' => [
d2c3266d 297 "IPIP capsulation traffic",
857f62c8 298 { action => 'PARAM', proto => '94' },
857f62c8 299 ],
857f62c8 300 'IPsec' => [
d2c3266d 301 "IPsec traffic",
857f62c8
DM		 302 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
303 { action => 'PARAM', proto => '50' },
857f62c8
DM		 304 ],
305 'IPsecah' => [
d2c3266d 306 "IPsec authentication (AH) traffic",
857f62c8
DM		 307 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
308 { action => 'PARAM', proto => '51' },
857f62c8
DM		 309 ],
310 'IPsecnat' => [
d2c3266d 311 "IPsec traffic and Nat-Traversal",
857f62c8
DM		 312 { action => 'PARAM', proto => 'udp', dport => '500' },
313 { action => 'PARAM', proto => 'udp', dport => '4500' },
314 { action => 'PARAM', proto => '50' },
857f62c8
DM		 315 ],
316 'IRC' => [
ebd54ae9 317 "Internet Relay Chat traffic",
857f62c8
DM		 318 { action => 'PARAM', proto => 'tcp', dport => '6667' },
319 ],
857f62c8 320 'Jetdirect' => [
ebd54ae9 321 "HP Jetdirect printing",
857f62c8
DM		 322 { action => 'PARAM', proto => 'tcp', dport => '9100' },
323 ],
324 'L2TP' => [
ebd54ae9 325 "Layer 2 Tunneling Protocol traffic",
857f62c8 326 { action => 'PARAM', proto => 'udp', dport => '1701' },
857f62c8
DM		 327 ],
328 'LDAP' => [
ebd54ae9 329 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 330 { action => 'PARAM', proto => 'tcp', dport => '389' },
331 ],
332 'LDAPS' => [
ebd54ae9 333 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 334 { action => 'PARAM', proto => 'tcp', dport => '636' },
335 ],
336 'MSNP' => [
ebd54ae9 337 "Microsoft Notification Protocol",
857f62c8
DM		 338 { action => 'PARAM', proto => 'tcp', dport => '1863' },
339 ],
340 'MSSQL' => [
ebd54ae9 341 "Microsoft SQL Server",
857f62c8
DM		 342 { action => 'PARAM', proto => 'tcp', dport => '1433' },
343 ],
344 'Mail' => [
ebd54ae9 345 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 346 { action => 'PARAM', proto => 'tcp', dport => '25' },
347 { action => 'PARAM', proto => 'tcp', dport => '465' },
348 { action => 'PARAM', proto => 'tcp', dport => '587' },
349 ],
7831e1e3
EK		 350 'MDNS' => [
351 "Multicast DNS",
352 { action => 'PARAM', proto => 'udp', dport => '5353' },
353 ],
857f62c8 354 'Munin' => [
ebd54ae9 355 "Munin networked resource monitoring traffic",
857f62c8
DM		 356 { action => 'PARAM', proto => 'tcp', dport => '4949' },
357 ],
358 'MySQL' => [
ebd54ae9 359 "MySQL server",
857f62c8
DM		 360 { action => 'PARAM', proto => 'tcp', dport => '3306' },
361 ],
362 'NNTP' => [
ebd54ae9 363 "NNTP traffic (Usenet).",
857f62c8
DM		 364 { action => 'PARAM', proto => 'tcp', dport => '119' },
365 ],
366 'NNTPS' => [
ebd54ae9 367 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 368 { action => 'PARAM', proto => 'tcp', dport => '563' },
369 ],
370 'NTP' => [
ebd54ae9 371 "Network Time Protocol (ntpd)",
857f62c8
DM		 372 { action => 'PARAM', proto => 'udp', dport => '123' },
373 ],
857f62c8 374 'OSPF' => [
ebd54ae9 375 "OSPF multicast traffic",
857f62c8
DM		 376 { action => 'PARAM', proto => '89' },
377 ],
378 'OpenVPN' => [
ebd54ae9 379 "OpenVPN traffic",
857f62c8
DM		 380 { action => 'PARAM', proto => 'udp', dport => '1194' },
381 ],
382 'PCA' => [
ebd54ae9 383 "Symantec PCAnywere (tm)",
857f62c8
DM		 384 { action => 'PARAM', proto => 'udp', dport => '5632' },
385 { action => 'PARAM', proto => 'tcp', dport => '5631' },
386 ],
387 'POP3' => [
ebd54ae9 388 "POP3 traffic",
857f62c8
DM		 389 { action => 'PARAM', proto => 'tcp', dport => '110' },
390 ],
391 'POP3S' => [
ebd54ae9 392 "Encrypted POP3 traffic",
857f62c8
DM		 393 { action => 'PARAM', proto => 'tcp', dport => '995' },
394 ],
395 'PPtP' => [
ebd54ae9 396 "Point-to-Point Tunneling Protocol",
857f62c8 397 { action => 'PARAM', proto => '47' },
857f62c8
DM		 398 { action => 'PARAM', proto => 'tcp', dport => '1723' },
399 ],
400 'Ping' => [
ebd54ae9 401 "ICMP echo request",
269d4f13 402 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 403 ],
404 'PostgreSQL' => [
ebd54ae9 405 "PostgreSQL server",
857f62c8
DM		 406 { action => 'PARAM', proto => 'tcp', dport => '5432' },
407 ],
408 'Printer' => [
ebd54ae9 409 "Line Printer protocol printing",
857f62c8
DM		 410 { action => 'PARAM', proto => 'tcp', dport => '515' },
411 ],
412 'RDP' => [
ebd54ae9 413 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 414 { action => 'PARAM', proto => 'tcp', dport => '3389' },
415 ],
d2c3266d 416 'RIP' => [
ebd54ae9 417 "Routing Information Protocol (bidirectional)",
857f62c8 418 { action => 'PARAM', proto => 'udp', dport => '520' },
857f62c8
DM		 419 ],
420 'RNDC' => [
ebd54ae9 421 "BIND remote management protocol",
857f62c8
DM		 422 { action => 'PARAM', proto => 'tcp', dport => '953' },
423 ],
424 'Razor' => [
ebd54ae9 425 "Razor Antispam System",
857f62c8
DM		 426 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
427 ],
428 'Rdate' => [
ebd54ae9 429 "Remote time retrieval (rdate)",
857f62c8
DM		 430 { action => 'PARAM', proto => 'tcp', dport => '37' },
431 ],
432 'Rsync' => [
ebd54ae9 433 "Rsync server",
857f62c8
DM		 434 { action => 'PARAM', proto => 'tcp', dport => '873' },
435 ],
436 'SANE' => [
ebd54ae9 437 "SANE network scanning",
857f62c8
DM		 438 { action => 'PARAM', proto => 'tcp', dport => '6566' },
439 ],
440 'SMB' => [
ebd54ae9 441 "Microsoft SMB traffic",
857f62c8
DM		 442 { action => 'PARAM', proto => 'udp', dport => '135,445' },
443 { action => 'PARAM', proto => 'udp', dport => '137:139' },
444 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
445 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
446 ],
857f62c8 447 'SMBswat' => [
ebd54ae9 448 "Samba Web Administration Tool",
857f62c8
DM		 449 { action => 'PARAM', proto => 'tcp', dport => '901' },
450 ],
451 'SMTP' => [
ebd54ae9 452 "Simple Mail Transfer Protocol",
857f62c8
DM		 453 { action => 'PARAM', proto => 'tcp', dport => '25' },
454 ],
455 'SMTPS' => [
ebd54ae9 456 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 457 { action => 'PARAM', proto => 'tcp', dport => '465' },
458 ],
459 'SNMP' => [
ebd54ae9 460 "Simple Network Management Protocol",
857f62c8
DM		 461 { action => 'PARAM', proto => 'udp', dport => '161:162' },
462 { action => 'PARAM', proto => 'tcp', dport => '161' },
463 ],
464 'SPAMD' => [
ebd54ae9 465 "Spam Assassin SPAMD traffic",
857f62c8
DM		 466 { action => 'PARAM', proto => 'tcp', dport => '783' },
467 ],
468 'SSH' => [
ebd54ae9 469 "Secure shell traffic",
857f62c8
DM		 470 { action => 'PARAM', proto => 'tcp', dport => '22' },
471 ],
472 'SVN' => [
ebd54ae9 473 "Subversion server (svnserve)",
857f62c8
DM		 474 { action => 'PARAM', proto => 'tcp', dport => '3690' },
475 ],
476 'SixXS' => [
ebd54ae9 477 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 478 { action => 'PARAM', proto => 'tcp', dport => '3874' },
479 { action => 'PARAM', proto => 'udp', dport => '3740' },
480 { action => 'PARAM', proto => '41' },
481 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
482 ],
483 'Squid' => [
ebd54ae9 484 "Squid web proxy traffic",
857f62c8
DM		 485 { action => 'PARAM', proto => 'tcp', dport => '3128' },
486 ],
487 'Submission' => [
ebd54ae9 488 "Mail message submission traffic",
857f62c8
DM		 489 { action => 'PARAM', proto => 'tcp', dport => '587' },
490 ],
491 'Syslog' => [
ebd54ae9 492 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 493 { action => 'PARAM', proto => 'udp', dport => '514' },
494 { action => 'PARAM', proto => 'tcp', dport => '514' },
495 ],
496 'TFTP' => [
ebd54ae9 497 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 498 { action => 'PARAM', proto => 'udp', dport => '69' },
499 ],
500 'Telnet' => [
ebd54ae9 501 "Telnet traffic",
857f62c8
DM		 502 { action => 'PARAM', proto => 'tcp', dport => '23' },
503 ],
504 'Telnets' => [
ebd54ae9 505 "Telnet over SSL",
857f62c8
DM		 506 { action => 'PARAM', proto => 'tcp', dport => '992' },
507 ],
508 'Time' => [
ebd54ae9 509 "RFC 868 Time protocol",
857f62c8
DM		 510 { action => 'PARAM', proto => 'tcp', dport => '37' },
511 ],
512 'Trcrt' => [
ebd54ae9 513 "Traceroute (for up to 30 hops) traffic",
857f62c8 514 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 515 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 516 ],
517 'VNC' => [
93be4333
DM		 518 "VNC traffic for VNC display's 0 - 99",
519 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
857f62c8
DM		 520 ],
521 'VNCL' => [
ebd54ae9 522 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 523 { action => 'PARAM', proto => 'tcp', dport => '5500' },
524 ],
525 'Web' => [
ebd54ae9 526 "WWW traffic (HTTP and HTTPS)",
857f62c8 527 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 528 { action => 'PARAM', proto => 'tcp', dport => '443' },
529 ],
857f62c8 530 'Webcache' => [
ebd54ae9 531 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 532 { action => 'PARAM', proto => 'tcp', dport => '8080' },
533 ],
534 'Webmin' => [
ebd54ae9 535 "Webmin traffic",
857f62c8
DM		 536 { action => 'PARAM', proto => 'tcp', dport => '10000' },
537 ],
538 'Whois' => [
ebd54ae9 539 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 540 { action => 'PARAM', proto => 'tcp', dport => '43' },
541 ],
961b4928
DM		 542};
543
544my $pve_fw_parsed_macros;
ebd54ae9 545my $pve_fw_macro_descr;
21a18e53 546my $pve_fw_macro_ipversion = {};
961b4928 547my $pve_fw_preferred_macro_names = {};
3a616aa0 548
fe3d79b4
WB		 549my $FWACCEPTMARK_ON = "0x80000000/0x80000000";
550my $FWACCEPTMARK_OFF = "0x00000000/0x80000000";
551
5547adf7 552my $pve_std_chains = {};
cfd7cd9c
TW		 553my $pve_std_chains_conf = {};
554$pve_std_chains_conf->{4} = {
d8f2505e 555 'PVEFW-SET-ACCEPT-MARK' => [
044409e5 556 { target => "-j MARK --set-mark $FWACCEPTMARK_ON" },
d8f2505e 557 ],
79929d9c
DM		 558 'PVEFW-DropBroadcast' => [
559 # same as shorewall 'Broadcast'
560 # simply DROP BROADCAST/MULTICAST/ANYCAST
561 # we can use this to reduce logging
562 { action => 'DROP', dsttype => 'BROADCAST' },
563 { action => 'DROP', dsttype => 'MULTICAST' },
564 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 565 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 566 ],
567 'PVEFW-reject' => [
568 # same as shorewall 'reject'
569 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 570 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c 571 { action => 'DROP', proto => 'icmp' },
044409e5
TW		 572 { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' },
573 { match => '-p udp', target => '-j REJECT --reject-with icmp-port-unreachable' },
574 { match => '-p icmp', target => '-j REJECT --reject-with icmp-host-unreachable' },
575 { target => '-j REJECT --reject-with icmp-host-prohibited' },
79929d9c
DM		 576 ],
577 'PVEFW-Drop' => [
cbb5d6f3 578 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 579 # but REJECT/DROP some packages to reduce logging,
580 # and ACCEPT critical ICMP types
581 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
582 # we are not interested in BROADCAST/MULTICAST/ANYCAST
583 { action => 'PVEFW-DropBroadcast' },
584 # ACCEPT critical ICMP types
585 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
586 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
587 # Drop packets with INVALID state
044409e5 588 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
79929d9c 589 # Drop Microsoft SMB noise
e4882cff
TW		 590 { action => 'DROP', proto => 'udp', dport => '135,445' },
591 { action => 'DROP', proto => 'udp', dport => '137:139' },
79929d9c 592 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 593 { action => 'DROP', proto => 'tcp', dport => '135,139,445' },
79929d9c
DM		 594 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
595 # Drop new/NotSyn traffic so that it doesn't get logged
044409e5 596 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
79929d9c
DM		 597 # Drop DNS replies
598 { action => 'DROP', proto => 'udp', sport => 53 },
599 ],
600 'PVEFW-Reject' => [
cbb5d6f3 601 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 602 # but REJECT/DROP some packages to reduce logging,
603 # and ACCEPT critical ICMP types
604 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
605 # we are not interested in BROADCAST/MULTICAST/ANYCAST
606 { action => 'PVEFW-DropBroadcast' },
607 # ACCEPT critical ICMP types
608 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
609 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
610 # Drop packets with INVALID state
044409e5 611 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
79929d9c 612 # Drop Microsoft SMB noise
e4882cff 613 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' },
79929d9c
DM		 614 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
615 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 616 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' },
79929d9c
DM		 617 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
618 # Drop new/NotSyn traffic so that it doesn't get logged
044409e5 619 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
79929d9c
DM		 620 # Drop DNS replies
621 { action => 'DROP', proto => 'udp', sport => 53 },
622 ],
d86659ef
DM		 623 'PVEFW-tcpflags' => [
624 # same as shorewall tcpflags action.
625 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
044409e5
TW		 626 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
627 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
628 { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
629 { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' },
630 { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' },
d86659ef 631 ],
bee633ab
DM		 632 'PVEFW-smurfs' => [
633 # same as shorewall smurfs action
634 # Filter packets for smurfs (packets with a broadcast address as the source).
044409e5
TW		 635 { match => '-s 0.0.0.0/32', target => '-j RETURN' }, # allow DHCP
636 { match => '-m addrtype --src-type BROADCAST', target => '-g PVEFW-smurflog' },
637 { match => '-s 224.0.0.0/4', target => '-g PVEFW-smurflog' },
638 ],
639 'PVEFW-smurflog' => [
640 { action => 'DROP', logmsg => 'DROP: ' },
641 ],
642 'PVEFW-logflags' => [
643 { action => 'DROP', logmsg => 'DROP: ' },
bee633ab 644 ],
d8f2505e
DM		 645};
646
cfd7cd9c 647$pve_std_chains_conf->{6} = {
47a79ff2 648 'PVEFW-SET-ACCEPT-MARK' => [
044409e5 649 { target => "-j MARK --set-mark $FWACCEPTMARK_ON" },
47a79ff2
AD		 650 ],
651 'PVEFW-DropBroadcast' => [
044409e5
TW		 652 # same as shorewall 'Broadcast'
653 # simply DROP BROADCAST/MULTICAST/ANYCAST
654 # we can use this to reduce logging
655 #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
649cd835
DM		 656 # ipv6 addrtype does not work with kernel 2.6.32
657 #{ action => 'DROP', dsttype => 'MULTICAST' },
044409e5
TW		 658 #{ action => 'DROP', dsttype => 'ANYCAST' },
659 { action => 'DROP', dest => 'ff00::/8' },
660 #{ action => 'DROP', dest => '224.0.0.0/4' },
47a79ff2
AD		 661 ],
662 'PVEFW-reject' => [
044409e5
TW		 663 # same as shorewall 'reject'
664 #{ action => 'DROP', dsttype => 'BROADCAST' },
665 #{ action => 'DROP', source => '224.0.0.0/4' },
649cd835 666 { action => 'DROP', proto => 'icmpv6' },
044409e5
TW		 667 { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' },
668 #"-p udp -j REJECT --reject-with icmp-port-unreachable",
669 #"-p icmp -j REJECT --reject-with icmp-host-unreachable",
670 #"-j REJECT --reject-with icmp-host-prohibited",
47a79ff2
AD		 671 ],
672 'PVEFW-Drop' => [
044409e5
TW		 673 # same as shorewall 'Drop', which is equal to DROP,
674 # but REJECT/DROP some packages to reduce logging,
675 # and ACCEPT critical ICMP types
649cd835 676 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
044409e5
TW		 677 # we are not interested in BROADCAST/MULTICAST/ANYCAST
678 { action => 'PVEFW-DropBroadcast' },
679 # ACCEPT critical ICMP types
680 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
681 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
682 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
683 # Drop packets with INVALID state
684 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
685 # Drop Microsoft SMB noise
e4882cff 686 { action => 'DROP', proto => 'udp', dport => '135,445' },
649cd835
DM		 687 { action => 'DROP', proto => 'udp', dport => '137:139'},
688 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 689 { action => 'DROP', proto => 'tcp', dport => '135,139,445' },
649cd835 690 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
044409e5
TW		 691 # Drop new/NotSyn traffic so that it doesn't get logged
692 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
693 # Drop DNS replies
649cd835 694 { action => 'DROP', proto => 'udp', sport => 53 },
47a79ff2
AD		 695 ],
696 'PVEFW-Reject' => [
044409e5
TW		 697 # same as shorewall 'Reject', which is equal to Reject,
698 # but REJECT/DROP some packages to reduce logging,
699 # and ACCEPT critical ICMP types
700 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
701 # we are not interested in BROADCAST/MULTICAST/ANYCAST
702 { action => 'PVEFW-DropBroadcast' },
703 # ACCEPT critical ICMP types
704 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
705 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
706 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
707 # Drop packets with INVALID state
708 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
709 # Drop Microsoft SMB noise
e4882cff
TW		 710 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' },
711 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139' },
044409e5 712 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 713 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' },
044409e5
TW		 714 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
715 # Drop new/NotSyn traffic so that it doesn't get logged
716 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
717 # Drop DNS replies
718 { action => 'DROP', proto => 'udp', sport => 53 },
47a79ff2
AD		 719 ],
720 'PVEFW-tcpflags' => [
044409e5
TW		 721 # same as shorewall tcpflags action.
722 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
723 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
724 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
725 { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
726 { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' },
727 { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' },
728 ],
729 'PVEFW-logflags' => [
730 { action => 'DROP', logmsg => 'DROP: ' },
47a79ff2 731 ],
47a79ff2
AD		 732};
733
4b586518
DM		 734# iptables -p icmp -h
735my $icmp_type_names = {
736 any => 1,
737 'echo-reply' => 1,
738 'destination-unreachable' => 1,
739 'network-unreachable' => 1,
740 'host-unreachable' => 1,
741 'protocol-unreachable' => 1,
742 'port-unreachable' => 1,
743 'fragmentation-needed' => 1,
744 'source-route-failed' => 1,
745 'network-unknown' => 1,
746 'host-unknown' => 1,
747 'network-prohibited' => 1,
748 'host-prohibited' => 1,
749 'TOS-network-unreachable' => 1,
750 'TOS-host-unreachable' => 1,
751 'communication-prohibited' => 1,
752 'host-precedence-violation' => 1,
753 'precedence-cutoff' => 1,
754 'source-quench' => 1,
755 'redirect' => 1,
756 'network-redirect' => 1,
757 'host-redirect' => 1,
758 'TOS-network-redirect' => 1,
759 'TOS-host-redirect' => 1,
760 'echo-request' => 1,
761 'router-advertisement' => 1,
762 'router-solicitation' => 1,
763 'time-exceeded' => 1,
764 'ttl-zero-during-transit' => 1,
765 'ttl-zero-during-reassembly' => 1,
766 'parameter-problem' => 1,
767 'ip-header-bad' => 1,
768 'required-option-missing' => 1,
769 'timestamp-request' => 1,
770 'timestamp-reply' => 1,
771 'address-mask-request' => 1,
772 'address-mask-reply' => 1,
773};
774
041b9277
DM		 775# ip6tables -p icmpv6 -h
776
777my $icmpv6_type_names = {
778 'any' => 1,
779 'destination-unreachable' => 1,
780 'no-route' => 1,
781 'communication-prohibited' => 1,
782 'address-unreachable' => 1,
783 'port-unreachable' => 1,
784 'packet-too-big' => 1,
785 'time-exceeded' => 1,
786 'ttl-zero-during-transit' => 1,
787 'ttl-zero-during-reassembly' => 1,
788 'parameter-problem' => 1,
789 'bad-header' => 1,
790 'unknown-header-type' => 1,
791 'unknown-option' => 1,
792 'echo-request' => 1,
793 'echo-reply' => 1,
794 'router-solicitation' => 1,
795 'router-advertisement' => 1,
593604cc 796 'neighbor-solicitation' => 1,
041b9277 797 'neighbour-solicitation' => 1,
593604cc 798 'neighbor-advertisement' => 1,
041b9277
DM		 799 'neighbour-advertisement' => 1,
800 'redirect' => 1,
801};
802
54cd19a8 803sub init_firewall_macros {
6158271d 804
961b4928 805 $pve_fw_parsed_macros = {};
9aab3127 806
21a18e53
WB		 807 my $parse = sub {
808 my ($k, $macro) = @_;
e5076eee 809 my $lc_name = lc($k);
21a18e53
WB		 810 $pve_fw_macro_ipversion->{$k} = 0;
811 while (!ref($macro->[0])) {
812 my $desc = shift @$macro;
813 if ($desc eq 'ipv4only') {
814 $pve_fw_macro_ipversion->{$k} = 4;
815 } elsif ($desc eq 'ipv6only') {
816 $pve_fw_macro_ipversion->{$k} = 6;
817 } else {
818 $pve_fw_macro_descr->{$k} = $desc;
819 }
ebd54ae9 820 }
e5076eee
DM		 821 $pve_fw_preferred_macro_names->{$lc_name} = $k;
822 $pve_fw_parsed_macros->{$k} = $macro;
21a18e53
WB		 823 };
824
825 foreach my $k (keys %$pve_fw_macros) {
826 &$parse($k, $pve_fw_macros->{$k});
827 }
828
829 foreach my $k (keys %$pve_ipv6fw_macros) {
830 next if $pve_fw_parsed_macros->{$k};
831 &$parse($k, $pve_ipv6fw_macros->{$k});
832 $pve_fw_macro_ipversion->{$k} = 6;
961b4928 833 }
9aab3127
DM		 834}
835
54cd19a8
DM		 836init_firewall_macros();
837
ebd54ae9
DM		 838sub get_macros {
839 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
840}
841
fcba0beb
DM		 842my $etc_services;
843
844sub get_etc_services {
845
846 return $etc_services if $etc_services;
847
848 my $filename = "/etc/services";
849
850 my $fh = IO::File->new($filename, O_RDONLY);
851 if (!$fh) {
852 warn "unable to read '$filename' - $!\n";
853 return {};
854 }
855
856 my $services = {};
857
858 while (my $line = <$fh>) {
859 chomp ($line);
860 next if $line =~m/^#/;
861 next if ($line =~m/^\s*$/);
862
863 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
864 $services->{byid}->{$2}->{name} = $1;
35b66e9d 865 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 866 $services->{byid}->{$2}->{$3} = 1;
867 $services->{byname}->{$1} = $services->{byid}->{$2};
868 }
869 }
870
871 close($fh);
872
6158271d
DM		 873 $etc_services = $services;
874
3a616aa0 875
fcba0beb
DM		 876 return $etc_services;
877}
878
879my $etc_protocols;
880
881sub get_etc_protocols {
882 return $etc_protocols if $etc_protocols;
883
884 my $filename = "/etc/protocols";
885
886 my $fh = IO::File->new($filename, O_RDONLY);
887 if (!$fh) {
888 warn "unable to read '$filename' - $!\n";
889 return {};
890 }
891
892 my $protocols = {};
893
894 while (my $line = <$fh>) {
895 chomp ($line);
896 next if $line =~m/^#/;
897 next if ($line =~m/^\s*$/);
898
899 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
900 $protocols->{byid}->{$2}->{name} = $1;
901 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
902 }
903 }
904
905 close($fh);
906
041b9277
DM		 907 # add special case for ICMP v6
908 $protocols->{byid}->{icmpv6}->{name} = "icmpv6";
909 $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6};
910
fcba0beb
DM		 911 $etc_protocols = $protocols;
912
913 return $etc_protocols;
914}
915
525778d7 916my $__local_network;
93be4333 917
525778d7 918sub local_network {
ac633d30 919 my ($new_value) = @_;
93be4333 920
525778d7 921 $__local_network = $new_value if defined($new_value);
ac633d30 922
525778d7 923 return $__local_network if defined($__local_network);
93be4333
DM		 924
925 eval {
926 my $nodename = PVE::INotify::nodename();
927
928 my $ip = PVE::Cluster::remote_node_ip($nodename);
929
930 my $testip = Net::IP->new($ip);
bfc488f6 931
5dc356af
WB		 932 my $isv6 = $testip->version == 6;
933 my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route()
934 : PVE::ProcFSTools::read_proc_net_route();
93be4333 935 foreach my $entry (@$routes) {
5dc356af
WB		 936 my $mask;
937 if ($isv6) {
938 $mask = $entry->{prefix};
15c80000 939 next if !$mask; # skip the default route...
5dc356af 940 } else {
2e1ae6b9 941 $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}};
5dc356af
WB		 942 next if !defined($mask);
943 }
93be4333
DM		 944 my $cidr = "$entry->{dest}/$mask";
945 my $testnet = Net::IP->new($cidr);
15c80000
WB		 946 my $overlap = $testnet->overlaps($testip);
947 if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP ||
948 $overlap == $Net::IP::IP_IDENTICAL)
949 {
525778d7 950 $__local_network = $cidr;
93be4333
DM		 951 return;
952 }
953 }
954 };
955 warn $@ if $@;
956
525778d7 957 return $__local_network;
93be4333
DM		 958}
959
6d959e3f
DM		 960# ipset names are limited to 31 characters,
961# and we use '-v4' or '-v6' to indicate IP versions,
962# and we use '_swap' suffix for atomic update,
963# for example PVEFW-${VMID}-${ipset_name}_swap
30150dca 964
88c26d5e 965my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
708ba714
DM		 966
967sub compute_ipset_chain_name {
88c26d5e 968 my ($vmid, $ipset_name, $ipversion) = @_;
708ba714
DM		 969
970 $vmid = 0 if !defined($vmid);
971
88c26d5e 972 my $id = "$vmid-${ipset_name}-v$ipversion";
708ba714 973
88c26d5e 974 if (length($id) > $max_iptables_ipset_name_length) {
708ba714
DM		 975 $id = PVE::Tools::fnv31a_hex($id);
976 }
977
978 return "PVEFW-$id";
979}
980
b692f42c
DM		 981sub compute_ipfilter_ipset_name {
982 my ($iface) = @_;
983
984 return "ipfilter-$iface";
985}
986
ecbea048
DM		 987sub parse_address_list {
988 my ($str) = @_;
989
e2c62733
DM		 990 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
991 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
992 return;
993 }
994
995 if ($str =~ m/^${ip_alias_pattern}$/) {
996 die "alias name too long\n" if length($str) > $max_alias_name_length;
997 return;
998 }
d72beb8e 999
3162af6b
DM		 1000 my $count = 0;
1001 my $iprange = 0;
a589b6ac 1002 my $ipversion;
7697c041 1003
55b47371
WB		 1004 my @elements = split(/,/, $str);
1005 die "extraneous commas in list\n" if $str ne join(',', @elements);
1006 foreach my $elem (@elements) {
3162af6b 1007 $count++;
c344e509
DM		 1008 my $ip = Net::IP->new($elem);
1009 if (!$ip) {
ecbea048
DM		 1010 my $err = Net::IP::Error();
1011 die "invalid IP address: $err\n";
1012 }
3162af6b 1013 $iprange = 1 if $elem =~ m/-/;
a589b6ac 1014
c344e509 1015 my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4;
a589b6ac
DM		 1016
1017 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
006490cb 1018 if $ipversion && ($new_ipversion != $ipversion);
a589b6ac
DM		 1019
1020 $ipversion = $new_ipversion;
ecbea048 1021 }
e34d0e58 1022
5163367b 1023 die "you can't use a range in a list\n" if $iprange && $count > 1;
a589b6ac 1024
7697c041 1025 return $ipversion;
ecbea048 1026}
dddd9413 1027
fcba0beb 1028sub parse_port_name_number_or_range {
a1c04f71 1029 my ($str, $dport) = @_;
fcba0beb
DM		 1030
1031 my $services = PVE::Firewall::get_etc_services();
7ca36671 1032 my $count = 0;
041b7e8e
DM		 1033 my $icmp_port = 0;
1034
55b47371
WB		 1035 my @elements = split(/,/, $str);
1036 die "extraneous commas in list\n" if $str ne join(',', @elements);
1037 foreach my $item (@elements) {
7ca36671
DM		 1038 $count++;
1039 if ($item =~ m/^(\d+):(\d+)$/) {
1040 my ($port1, $port2) = ($1, $2);
1041 die "invalid port '$port1'\n" if $port1 > 65535;
1042 die "invalid port '$port2'\n" if $port2 > 65535;
1043 } elsif ($item =~ m/^(\d+)$/) {
1044 my $port = $1;
1045 die "invalid port '$port'\n" if $port > 65535;
1046 } else {
a1c04f71 1047 if ($dport && $icmp_type_names->{$item}) {
041b7e8e 1048 $icmp_port = 1;
a1c04f71 1049 } elsif ($dport && $icmpv6_type_names->{$item}) {
041b9277 1050 $icmp_port = 1;
041b7e8e 1051 } else {
e34d0e58 1052 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 1053 }
fcba0beb
DM		 1054 }
1055 }
1056
041b7e8e
DM		 1057 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
1058
7ca36671 1059 return $count;
fcba0beb
DM		 1060}
1061
a1c04f71
WB		 1062PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec);
1063sub pve_fw_verify_sport_spec {
1064 my ($portstr) = @_;
1065
1066 parse_port_name_number_or_range($portstr, 0);
1067
1068 return $portstr;
1069}
1070
1071PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec);
1072sub pve_fw_verify_dport_spec {
54cd19a8
DM		 1073 my ($portstr) = @_;
1074
a1c04f71 1075 parse_port_name_number_or_range($portstr, 1);
54cd19a8
DM		 1076
1077 return $portstr;
1078}
1079
d31689ee
DM		 1080PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
1081sub pve_fw_verify_addr_spec {
54cd19a8
DM		 1082 my ($list) = @_;
1083
1084 parse_address_list($list);
1085
1086 return $list;
1087}
1088
1089PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
1090sub pve_fw_verify_protocol_spec {
1091 my ($proto) = @_;
1092
1093 my $protocols = get_etc_protocols();
1094
1095 die "unknown protocol '$proto'\n" if $proto &&
1096 !(defined($protocols->{byname}->{$proto}) ||
1097 defined($protocols->{byid}->{$proto}));
1098
1099 return $proto;
1100}
1101
1102
d1c53b3e 1103# helper function for API
d1c53b3e 1104
5d38d64f
DM		 1105sub copy_opject_with_digest {
1106 my ($object) = @_;
1107
1108 my $sha = Digest::SHA->new('sha1');
1109
1110 my $res = {};
1111 foreach my $k (sort keys %$object) {
1112 my $v = $object->{$k};
0365eb68 1113 next if !defined($v);
5d38d64f
DM		 1114 $res->{$k} = $v;
1115 $sha->add($k, ':', $v, "\n");
1116 }
1117
55e686c7 1118 my $digest = $sha->hexdigest;
5d38d64f
DM		 1119
1120 $res->{digest} = $digest;
1121
1122 return wantarray ? ($res, $digest) : $res;
1123}
1124
1125sub copy_list_with_digest {
1126 my ($list) = @_;
1127
1128 my $sha = Digest::SHA->new('sha1');
1129
1130 my $res = [];
1131 foreach my $entry (@$list) {
1132 my $data = {};
1133 foreach my $k (sort keys %$entry) {
1134 my $v = $entry->{$k};
0365eb68 1135 next if !defined($v);
5d38d64f 1136 $data->{$k} = $v;
6d9246e7 1137 # Note: digest ignores refs ($rule->{errors})
e83f0d00
DC		 1138 # since Digest::SHA expects a series of bytes,
1139 # we have to encode the value here to prevent errors when
1140 # using utf8 characters (eg. in comments)
1141 $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ;
5d38d64f
DM		 1142 }
1143 push @$res, $data;
1144 }
1145
55e686c7 1146 my $digest = $sha->hexdigest;
5d38d64f
DM		 1147
1148 foreach my $entry (@$res) {
1149 $entry->{digest} = $digest;
1150 }
1151
1152 return wantarray ? ($res, $digest) : $res;
1153}
1154
e313afe0
DM		 1155our $cluster_option_properties = {
1156 enable => {
1157 description => "Enable or disable the firewall cluster wide.",
1158 type => 'integer',
1159 minimum => 0,
1160 optional => 1,
1161 },
1162 policy_in => {
1163 description => "Input policy.",
1164 type => 'string',
1165 optional => 1,
1166 enum => ['ACCEPT', 'REJECT', 'DROP'],
1167 },
1168 policy_out => {
1169 description => "Output policy.",
1170 type => 'string',
1171 optional => 1,
1172 enum => ['ACCEPT', 'REJECT', 'DROP'],
1173 },
1174};
1175
1176our $host_option_properties = {
1177 enable => {
1178 description => "Enable host firewall rules.",
1179 type => 'boolean',
1180 optional => 1,
1181 },
1182 log_level_in => get_standard_option('pve-fw-loglevel', {
1183 description => "Log level for incoming traffic." }),
1184 log_level_out => get_standard_option('pve-fw-loglevel', {
1185 description => "Log level for outgoing traffic." }),
1186 tcp_flags_log_level => get_standard_option('pve-fw-loglevel', {
1187 description => "Log level for illegal tcp flags filter." }),
1188 smurf_log_level => get_standard_option('pve-fw-loglevel', {
1189 description => "Log level for SMURFS filter." }),
1190 nosmurfs => {
1191 description => "Enable SMURFS filter.",
1192 type => 'boolean',
1193 optional => 1,
1194 },
1195 tcpflags => {
1196 description => "Filter illegal combinations of TCP flags.",
1197 type => 'boolean',
1198 optional => 1,
1199 },
1200 nf_conntrack_max => {
1201 description => "Maximum number of tracked connections.",
1202 type => 'integer',
1203 optional => 1,
1204 minimum => 32768,
1205 },
1206 nf_conntrack_tcp_timeout_established => {
1207 description => "Conntrack established timeout.",
1208 type => 'integer',
1209 optional => 1,
1210 minimum => 7875,
1211 },
1212 ndp => {
1213 description => "Enable NDP.",
1214 type => 'boolean',
1215 optional => 1,
1216 },
1217};
1218
1219our $vm_option_properties = {
1220 enable => {
1221 description => "Enable/disable firewall rules.",
1222 type => 'boolean',
1223 optional => 1,
1224 },
1225 macfilter => {
1226 description => "Enable/disable MAC address filter.",
1227 type => 'boolean',
1228 optional => 1,
1229 },
1230 dhcp => {
1231 description => "Enable DHCP.",
1232 type => 'boolean',
1233 optional => 1,
1234 },
1235 ndp => {
1236 description => "Enable NDP.",
1237 type => 'boolean',
1238 optional => 1,
1239 },
1240 radv => {
1241 description => "Allow sending Router Advertisement.",
1242 type => 'boolean',
1243 optional => 1,
1244 },
1245 ipfilter => {
1246 description => "Enable default IP filters. " .
1247 "This is equivalent to adding an empty ipfilter-net<id> ipset " .
1248 "for every interface. Such ipsets implicitly contain sane default " .
1249 "restrictions such as restricting IPv6 link local addresses to " .
1250 "the one derived from the interface's MAC address. For containers " .
1251 "the configured IP addresses will be implicitly added.",
1252 type => 'boolean',
1253 optional => 1,
1254 },
1255 policy_in => {
1256 description => "Input policy.",
1257 type => 'string',
1258 optional => 1,
1259 enum => ['ACCEPT', 'REJECT', 'DROP'],
1260 },
1261 policy_out => {
1262 description => "Output policy.",
1263 type => 'string',
1264 optional => 1,
1265 enum => ['ACCEPT', 'REJECT', 'DROP'],
1266 },
1267 log_level_in => get_standard_option('pve-fw-loglevel', {
1268 description => "Log level for incoming traffic." }),
1269 log_level_out => get_standard_option('pve-fw-loglevel', {
1270 description => "Log level for outgoing traffic." }),
1271
1272};
1273
fb060a52 1274
7a332151 1275my $addr_list_descr = "This can refer to a single IP address, an IP set ('+ipsetname') or an IP alias definition. You can also specify an address range like '20.34.101.207-201.3.9.99', or a list of IP addresses and networks (entries are separated by comma). Please do not mix IPv4 and IPv6 addresses inside such lists.";
fb060a52 1276
7a332151 1277my $port_descr = "You can use service names or simple numbers (0-65535), as defined in '/etc/services'. Port ranges can be specified with '\\d+:\\d+', for example '80:85', and you can use comma separated list to match several ports or ranges.";
fb060a52 1278
9c7e0858
DM		 1279my $rule_properties = {
1280 pos => {
1281 description => "Update rule at position <pos>.",
1282 type => 'integer',
1283 minimum => 0,
1284 optional => 1,
1285 },
c71e785f 1286 digest => get_standard_option('pve-config-digest'),
9c7e0858 1287 type => {
e50429af 1288 description => "Rule type.",
9c7e0858
DM		 1289 type => 'string',
1290 optional => 1,
1291 enum => ['in', 'out', 'group'],
1292 },
1293 action => {
c14dacdf 1294 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 1295 type => 'string',
1296 optional => 1,
44be8ceb 1297 pattern => $security_group_name_pattern,
c14dacdf
DM		 1298 maxLength => 20,
1299 minLength => 2,
9c7e0858 1300 },
e5076eee 1301 macro => {
e50429af 1302 description => "Use predefined standard macro.",
e5076eee
DM		 1303 type => 'string',
1304 optional => 1,
54cd19a8 1305 maxLength => 128,
e5076eee 1306 },
fb060a52 1307 iface => get_standard_option('pve-iface', {
7ccaa5f1 1308 description => "Network interface name. You have to use network configuration key names for VMs and containers ('net\\d+'). Host related rules can use arbitrary strings.",
fb060a52
DM		 1309 optional => 1
1310 }),
9c7e0858 1311 source => {
fb060a52 1312 description => "Restrict packet source address. $addr_list_descr",
d31689ee 1313 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1314 optional => 1,
1315 },
1316 dest => {
fb060a52 1317 description => "Restrict packet destination address. $addr_list_descr",
d31689ee 1318 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1319 optional => 1,
1320 },
1321 proto => {
fb060a52 1322 description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.",
54cd19a8 1323 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 1324 optional => 1,
1325 },
1326 enable => {
e50429af 1327 description => "Flag to enable/disable a rule.",
72d055fc
AG		 1328 type => 'integer',
1329 minimum => 0,
9c7e0858
DM		 1330 optional => 1,
1331 },
1332 sport => {
fb060a52 1333 description => "Restrict TCP/UDP source port. $port_descr",
a1c04f71 1334 type => 'string', format => 'pve-fw-sport-spec',
9c7e0858
DM		 1335 optional => 1,
1336 },
1337 dport => {
fb060a52 1338 description => "Restrict TCP/UDP destination port. $port_descr",
a1c04f71 1339 type => 'string', format => 'pve-fw-dport-spec',
9c7e0858
DM		 1340 optional => 1,
1341 },
1342 comment => {
e50429af 1343 description => "Descriptive comment.",
9c7e0858
DM		 1344 type => 'string',
1345 optional => 1,
1346 },
1347};
1348
1349sub add_rule_properties {
1350 my ($properties) = @_;
1351
1352 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 1353 my $h = $rule_properties->{$k};
1354 # copy data, so that we can modify later without side effects
1355 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 1356 }
cbb5d6f3 1357
9c7e0858
DM		 1358 return $properties;
1359}
1360
5b7974df
DM		 1361sub delete_rule_properties {
1362 my ($rule, $delete_str) = @_;
e34d0e58 1363
5b7974df
DM		 1364 foreach my $opt (PVE::Tools::split_list($delete_str)) {
1365 raise_param_exc({ 'delete' => "no such property ('$opt')"})
1366 if !defined($rule_properties->{$opt});
1367 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
1368 if $opt eq 'type' || $opt eq 'action';
1369 delete $rule->{$opt};
1370 }
1371
1372 return $rule;
1373}
1374
9a2745a0 1375my $apply_macro = sub {
35d1d6da 1376 my ($macro_name, $param, $verify, $ipversion) = @_;
9a2745a0
DM		 1377
1378 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1379 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1380
35d1d6da
DM		 1381 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1382 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1383 }
1384
21a18e53 1385 # skip macros which are specific to another ipversion
ff5d050e
AG		 1386 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1387 return if $ipversion != $required;
1388 }
21a18e53 1389
9a2745a0
DM		 1390 my $rules = [];
1391
1392 foreach my $templ (@$macro_rules) {
1393 my $rule = {};
1394 my $param_used = {};
1395 foreach my $k (keys %$templ) {
1396 my $v = $templ->{$k};
1397 if ($v eq 'PARAM') {
1398 $v = $param->{$k};
1399 $param_used->{$k} = 1;
1400 } elsif ($v eq 'DEST') {
1401 $v = $param->{dest};
1402 $param_used->{dest} = 1;
1403 } elsif ($v eq 'SOURCE') {
1404 $v = $param->{source};
1405 $param_used->{source} = 1;
1406 }
1407
1408 if (!defined($v)) {
1409 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1410 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1411 die "$msg\n";
1412 }
1413 $rule->{$k} = $v;
1414 }
1415 foreach my $k (keys %$param) {
1416 next if $k eq 'macro';
1417 next if !defined($param->{$k});
1418 next if $param_used->{$k};
1419 if (defined($rule->{$k})) {
1420 if ($rule->{$k} ne $param->{$k}) {
1421 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1422 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1423 die "$msg\n";
1424 }
1425 } else {
1426 $rule->{$k} = $param->{$k};
1427 }
1428 }
1429 push @$rules, $rule;
1430 }
1431
1432 return $rules;
1433};
1434
b6b8e6ad
DM		 1435my $rule_env_iface_lookup = {
1436 'ct' => 1,
1437 'vm' => 1,
1438 'group' => 0,
1439 'cluster' => 1,
1440 'host' => 1,
1441};
1442
7ca36671 1443sub verify_rule {
a523e057 1444 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1445
1446 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1447
b6b8e6ad
DM		 1448 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1449 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1450
a523e057
DM		 1451 my $errors = $rule->{errors} || {};
1452
6d9246e7 1453 my $error_count = 0;
7ca36671 1454
6d9246e7
DM		 1455 my $add_error = sub {
1456 my ($param, $msg) = @_;
d4cda423 1457 chomp $msg;
6d9246e7
DM		 1458 raise_param_exc({ $param => $msg }) if !$noerr;
1459 $error_count++;
1460 $errors->{$param} = $msg if !$errors->{$param};
1461 };
1462
eea9d2a1
DM		 1463 my $ipversion;
1464 my $set_ip_version = sub {
1465 my $vers = shift;
1466 if ($vers) {
1467 die "detected mixed ipv4/ipv6 adresses in rule\n"
1468 if $ipversion && ($vers != $ipversion);
1469 $ipversion = $vers;
1470 }
1471 };
1472
a523e057 1473 my $check_ipset_or_alias_property = sub {
ae029a88 1474 my ($name, $expected_ipversion) = @_;
a523e057
DM		 1475
1476 if (my $value = $rule->{$name}) {
1477 if ($value =~ m/^\+/) {
4dfe04e6 1478 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1479 &$add_error($name, "no such ipset '$1'")
a523e057 1480 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1481
a523e057 1482 } else {
351052d1 1483 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1484 }
1485 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1486 my $alias = lc($value);
bfc488f6 1487 &$add_error($name, "no such alias '$value'")
70e524eb 1488 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
04f5088f 1489 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
70e524eb
AD		 1490 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1491
eea9d2a1 1492 &$set_ip_version($e->{ipversion});
a523e057
DM		 1493 }
1494 }
1495 };
1496
6d9246e7
DM		 1497 my $type = $rule->{type};
1498 my $action = $rule->{action};
bfc488f6 1499
6d9246e7
DM		 1500 &$add_error('type', "missing property") if !$type;
1501 &$add_error('action', "missing property") if !$action;
1502
1503 if ($type) {
1504 if ($type eq 'in' || $type eq 'out') {
1505 &$add_error('action', "unknown action '$action'")
1506 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1507 } elsif ($type eq 'group') {
1508 &$add_error('type', "security groups not allowed")
1509 if !$allow_groups;
1510 &$add_error('action', "invalid characters in security group name")
1511 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1512 } else {
1513 &$add_error('type', "unknown rule type '$type'");
1514 }
7ca36671 1515 }
e34d0e58 1516
dba740a9 1517 if ($rule->{iface}) {
bfc488f6 1518 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1519 if !$allow_iface;
dba740a9 1520 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1521 &$add_error('iface', $@) if $@;
fdefeeab 1522 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
b6b8e6ad
DM		 1523 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1524 if $rule->{iface} !~ m/^net(\d+)$/;
b6b8e6ad
DM		 1525 }
1526 }
7ca36671
DM		 1527
1528 if ($rule->{macro}) {
6d9246e7
DM		 1529 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1530 $rule->{macro} = $preferred_name;
1531 } else {
1532 &$add_error('macro', "unknown macro '$rule->{macro}'");
1533 }
1534 }
1535
1536 if ($rule->{proto}) {
1537 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1538 &$add_error('proto', $@) if $@;
041b9277
DM		 1539 &$set_ip_version(4) if $rule->{proto} eq 'icmp';
1540 &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
6d9246e7 1541 }
7ca36671
DM		 1542
1543 if ($rule->{dport}) {
a1c04f71 1544 eval { parse_port_name_number_or_range($rule->{dport}, 1); };
6d9246e7 1545 &$add_error('dport', $@) if $@;
48e3963e 1546 my $proto = $rule->{proto};
6d9246e7 1547 &$add_error('proto', "missing property - 'dport' requires this property")
48e3963e
WB		 1548 if !$proto;
1549 &$add_error('dport', "protocol '$proto' does not support ports")
1550 if !$PROTOCOLS_WITH_PORTS->{$proto} &&
1551 $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
6d9246e7 1552 }
7ca36671
DM		 1553
1554 if ($rule->{sport}) {
a1c04f71 1555 eval { parse_port_name_number_or_range($rule->{sport}, 0); };
6d9246e7 1556 &$add_error('sport', $@) if $@;
48e3963e 1557 my $proto = $rule->{proto};
6d9246e7 1558 &$add_error('proto', "missing property - 'sport' requires this property")
48e3963e
WB		 1559 if !$proto;
1560 &$add_error('sport', "protocol '$proto' does not support ports")
1561 if !$PROTOCOLS_WITH_PORTS->{$proto};
7ca36671
DM		 1562 }
1563
1564 if ($rule->{source}) {
041b9277
DM		 1565 eval {
1566 my $source_ipversion = parse_address_list($rule->{source});
1567 &$set_ip_version($source_ipversion);
1568 };
6d9246e7 1569 &$add_error('source', $@) if $@;
ae029a88 1570 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM		 1571 }
1572
1573 if ($rule->{dest}) {
9e2205e5
DM		 1574 eval {
1575 my $dest_ipversion = parse_address_list($rule->{dest});
041b9277 1576 &$set_ip_version($dest_ipversion);
9e2205e5 1577 };
6d9246e7 1578 &$add_error('dest', $@) if $@;
ae029a88 1579 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM		 1580 }
1581
35d1d6da
DM		 1582 $rule->{ipversion} = $ipversion if $ipversion;
1583
a523e057 1584 if ($rule->{macro} && !$error_count) {
35d1d6da 1585 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
6d9246e7
DM		 1586 if (my $err = $@) {
1587 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1588 my $eh = $err->{errors};
1589 foreach my $p (keys %$eh) {
1590 &$add_error($p, $eh->{$p});
1591 }
1592 } else {
1593 &$add_error('macro', "$err");
1594 }
1595 }
9a2745a0
DM		 1596 }
1597
6d9246e7
DM		 1598 $rule->{errors} = $errors if $error_count;
1599
7ca36671
DM		 1600 return $rule;
1601}
1602
9c7e0858
DM		 1603sub copy_rule_data {
1604 my ($rule, $param) = @_;
1605
1606 foreach my $k (keys %$rule_properties) {
1607 if (defined(my $v = $param->{$k})) {
1608 if ($v eq '' || $v eq '-') {
1609 delete $rule->{$k};
1610 } else {
1611 $rule->{$k} = $v;
1612 }
9c7e0858
DM		 1613 }
1614 }
7ca36671 1615
9c7e0858
DM		 1616 return $rule;
1617}
1618
9f6845cf
DM		 1619sub rules_modify_permissions {
1620 my ($rule_env) = @_;
1621
1622 if ($rule_env eq 'host') {
1623 return {
1624 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1625 };
1626 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1627 return {
1628 check => ['perm', '/', [ 'Sys.Modify' ]],
1629 };
3b4882dc 1630 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1631 return {
1632 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1633 }
1634 }
1635
1636 return undef;
1637}
1638
1639sub rules_audit_permissions {
1640 my ($rule_env) = @_;
1641
1642 if ($rule_env eq 'host') {
1643 return {
1644 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1645 };
1646 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1647 return {
1648 check => ['perm', '/', [ 'Sys.Audit' ]],
1649 };
3b4882dc 1650 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1651 return {
1652 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1653 }
1654 }
1655
1656 return undef;
1657}
1658
9c7e0858 1659# core functions
780bcc0f
DM		 1660my $bridge_firewall_enabled = 0;
1661
1662sub enable_bridge_firewall {
1663
1664 return if $bridge_firewall_enabled; # only once
1665
5f0a912c
DM		 1666 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1667 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1668
6a8a75db
DM		 1669 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1670 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1671
780bcc0f
DM		 1672 $bridge_firewall_enabled = 1;
1673}
1674
b16e818e
DM		 1675sub iptables_restore_cmdlist {
1676 my ($cmdlist) = @_;
3a616aa0 1677
59f9b456 1678 run_command("/sbin/iptables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
3a616aa0
AD		 1679}
1680
17da5c0f
AD		 1681sub ip6tables_restore_cmdlist {
1682 my ($cmdlist) = @_;
1683
59f9b456 1684 run_command("/sbin/ip6tables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
17da5c0f
AD		 1685}
1686
34cdedfa
AD		 1687sub ipset_restore_cmdlist {
1688 my ($cmdlist) = @_;
1689
ff5363da 1690 run_command("/sbin/ipset restore", input => $cmdlist, errmsg => "ipset_restore_cmdlist");
34cdedfa
AD		 1691}
1692
de2a57cd 1693sub iptables_get_chains {
17da5c0f
AD		 1694 my ($iptablescmd) = @_;
1695
1696 $iptablescmd = "iptables" if !$iptablescmd;
de2a57cd
DM		 1697
1698 my $res = {};
1699
1700 # check what chains we want to track
1701 my $is_pvefw_chain = sub {
1702 my $name = shift;
1703
dec84fcd
DM		 1704 return 1 if $name =~ m/^PVEFW-\S+$/;
1705
a3ded5cd 1706 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
954f24b1 1707
a3ded5cd 1708 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
954f24b1 1709
a3ded5cd 1710 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
a89dfcc6 1711 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
de2a57cd
DM		 1712
1713 return undef;
1714 };
1715
1716 my $table = '';
1717
c4a2e5ae
DM		 1718 my $hooks = {};
1719
de2a57cd
DM		 1720 my $parser = sub {
1721 my $line = shift;
1722
1723 return if $line =~ m/^#/;
1724 return if $line =~ m/^\s*$/;
1725
1726 if ($line =~ m/^\*(\S+)$/) {
1727 $table = $1;
1728 return;
1729 }
1730
1731 return if $table ne 'filter';
1732
1733 if ($line =~ m/^:(\S+)\s/) {
1734 my $chain = $1;
1735 return if !&$is_pvefw_chain($chain);
3fa83edf 1736 $res->{$chain} = "unknown";
09d5f68e 1737 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1738 my ($chain, $sig) = ($1, $2);
de2a57cd 1739 return if !&$is_pvefw_chain($chain);
3fa83edf 1740 $res->{$chain} = $sig;
c4a2e5ae
DM		 1741 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1742 $hooks->{$1} = 1;
de2a57cd
DM		 1743 } else {
1744 # simply ignore the rest
1745 return;
1746 }
1747 };
1748
17da5c0f 1749 run_command("/sbin/$iptablescmd-save", outfunc => $parser);
de2a57cd 1750
c4a2e5ae 1751 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1752}
1753
9bf7d929
DM		 1754sub iptables_chain_digest {
1755 my ($rules) = @_;
1756 my $digest = Digest::SHA->new('sha1');
1757 foreach my $rule (@$rules) { # order is important
1758 $digest->add($rule);
1759 }
1760 return $digest->b64digest;
1761}
1762
3f95d14a
DM		 1763sub ipset_chain_digest {
1764 my ($rules) = @_;
4bd0a9c4 1765
3f95d14a
DM		 1766 my $digest = Digest::SHA->new('sha1');
1767 foreach my $rule (sort @$rules) { # note: sorted
1768 $digest->add($rule);
1769 }
1770 return $digest->b64digest;
1771}
1772
34cdedfa
AD		 1773sub ipset_get_chains {
1774
1775 my $res = {};
1776 my $chains = {};
1777
1778 my $parser = sub {
1779 my $line = shift;
1780
1781 return if $line =~ m/^#/;
1782 return if $line =~ m/^\s*$/;
4b96e877 1783 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1784 my $chain = $1;
1785 $line =~ s/\s+$//; # delete trailing white space
1786 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1787 } else {
1788 # simply ignore the rest
1789 return;
1790 }
1791 };
1792
ff5363da 1793 run_command("/sbin/ipset save", outfunc => $parser);
34cdedfa 1794
3f95d14a
DM		 1795 # compute digest for each chain
1796 foreach my $chain (keys %$chains) {
1797 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1798 }
1799
1800 return $res;
1801}
1802
a44cb745
TW		 1803# generate a src or dst match
1804# $dir(ection) is either d or s
1805sub ipt_gen_src_or_dst_match {
1806 my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_;
1807
1808 my $srcdst;
1809 if ($dir eq 's') {
1810 $srcdst = "src";
1811 } elsif ($dir eq 'd') {
1812 $srcdst = "dst";
1813 } else {
1814 die "ipt_gen_src_or_dst_match: invalid direction $dir \n";
1815 }
1816
1817 my $match;
1818 if ($adr =~ m/^\+/) {
1819 if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
1820 my $name = $1;
1821 my $ipset_chain;
1822 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
1823 $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
1824 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
1825 $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
1826 } else {
1827 die "no such ipset '$name'\n";
1828 }
1829 $match = "-m set --match-set ${ipset_chain} ${srcdst}";
1830 } else {
1831 die "invalid security group name '$adr'\n";
1832 }
1833 } elsif ($adr =~ m/^${ip_alias_pattern}$/){
1834 my $alias = lc($adr);
1835 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
1836 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1837 die "no such alias '$adr'\n" if !$e;
1838 $match = "-${dir} $e->{cidr}";
1839 } elsif ($adr =~ m/\-/){
1840 $match = "-m iprange --${srcdst}-range $adr";
1841 } else {
1842 $match = "-${dir} $adr";
1843 }
1844
1845 return $match;
1846}
1847
30c390f9
TW		 1848# convert a %rule to an array of iptables commands
1849sub ipt_rule_to_cmds {
1850 my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_;
1851
1852 die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen
1853
1854 my @match = ();
1855
1856 if (defined $rule->{match}) {
1857 push @match, $rule->{match};
1858 } else {
1859 push @match, "-i $rule->{iface_in}" if $rule->{iface_in};
1860 push @match, "-o $rule->{iface_out}" if $rule->{iface_out};
1861
1862 if ($rule->{source}) {
1863 push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf);
1864 }
1865 if ($rule->{dest}) {
1866 push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf);
1867 }
1868
1869 if (my $proto = $rule->{proto}) {
1870 push @match, "-p $proto";
1871
1872 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}, 1) : 0;
1873 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}, 0) : 0;
1874
1875 my $multiport = 0;
1876 $multiport++ if $nbdport > 1;
1877 $multiport++ if $nbsport > 1;
1878
1879 push @match, "--match multiport" if $multiport;
1880
1881 die "multiport: option '--sports' cannot be used together with '--dports'\n"
1882 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1883
1884 if ($rule->{dport}) {
1885 if ($proto eq 'icmp') {
1886 # Note: we use dport to store --icmp-type
1887 die "unknown icmp-type '$rule->{dport}'\n"
1888 if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}});
1889 push @match, "-m icmp --icmp-type $rule->{dport}";
1890 } elsif ($proto eq 'icmpv6') {
1891 # Note: we use dport to store --icmpv6-type
1892 die "unknown icmpv6-type '$rule->{dport}'\n"
1893 if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}});
1894 push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
1895 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
1896 die "protocol $proto does not have ports\n";
1897 } else {
1898 if ($nbdport > 1) {
1899 if ($multiport == 2) {
1900 push @match, "--ports $rule->{dport}";
1901 } else {
1902 push @match, "--dports $rule->{dport}";
1903 }
1904 } else {
1905 push @match, "--dport $rule->{dport}";
1906 }
1907 }
1908 }
1909
1910 if ($rule->{sport}) {
1911 die "protocol $proto does not have ports\n"
1912 if !$PROTOCOLS_WITH_PORTS->{$proto};
1913 if ($nbsport > 1) {
1914 push @match, "--sports $rule->{sport}" if $multiport != 2;
1915 } else {
1916 push @match, "--sport $rule->{sport}";
1917 }
1918 }
1919 } elsif ($rule->{dport} || $rule->{sport}) {
1920 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
1921 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
1922 }
1923
1924 push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
1925 }
1926 my $matchstr = scalar(@match) ? join(' ', @match) : "";
1927
1928 my $targetstr;
1929 if (defined $rule->{target}) {
1930 $targetstr = $rule->{target};
1931 } else {
1932 my $action = (defined $rule->{action}) ? $rule->{action} : "";
1933 my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
1934 $targetstr = ($goto) ? "-g $action" : "-j $action";
1935 }
1936
1937 my @iptcmds;
1938 if (defined $rule->{log} && $rule->{log}) {
1939 my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $rule->{log});
1940 push @iptcmds, "-A $chain $matchstr $logaction";
1941 }
1942 push @iptcmds, "-A $chain $matchstr $targetstr";
1943 return @iptcmds;
1944}
1945
1e9c5070 1946sub ruleset_generate_match {
88c26d5e 1947 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
3a616aa0 1948
00bb4391 1949 return if defined($rule->{enable}) && !$rule->{enable};
6d9246e7 1950 return if $rule->{errors};
11bac5c2 1951
044409e5
TW		 1952 return $rule->{match} if defined $rule->{match};
1953
e5076eee
DM		 1954 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1955
a1c04f71
WB		 1956 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}, 1) : 0;
1957 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}, 0) : 0;
e5076eee 1958
41524a58 1959 my @cmd = ();
3a616aa0 1960
eba0fb64
DM		 1961 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1962 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1963
ba791b1f
AD		 1964 my $source = $rule->{source};
1965 my $dest = $rule->{dest};
1966
a44cb745
TW		 1967 push @cmd, ipt_gen_src_or_dst_match($source, 's', $ipversion, $cluster_conf, $fw_conf) if $source;
1968 push @cmd, ipt_gen_src_or_dst_match($dest, 'd', $ipversion, $cluster_conf, $fw_conf) if $dest;
4b586518 1969
95e35949
WB		 1970 if (my $proto = $rule->{proto}) {
1971 push @cmd, "-p $proto";
e3a1d391 1972
181390b0 1973 my $multiport = 0;
e5076eee
DM		 1974 $multiport++ if $nbdport > 1;
1975 $multiport++ if $nbsport > 1;
e3a1d391 1976
41524a58 1977 push @cmd, "--match multiport" if $multiport;
4b586518 1978
cbb5d6f3 1979 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1980 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1981
1982 if ($rule->{dport}) {
95e35949 1983 if ($proto eq 'icmp') {
181390b0 1984 # Note: we use dport to store --icmp-type
9bd7a4b3
WB		 1985 die "unknown icmp-type '$rule->{dport}'\n"
1986 if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}});
41524a58 1987 push @cmd, "-m icmp --icmp-type $rule->{dport}";
95e35949 1988 } elsif ($proto eq 'icmpv6') {
041b9277 1989 # Note: we use dport to store --icmpv6-type
9bd7a4b3
WB		 1990 die "unknown icmpv6-type '$rule->{dport}'\n"
1991 if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}});
041b9277 1992 push @cmd, "-m icmpv6 --icmpv6-type $rule->{dport}";
48e3963e
WB		 1993 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
1994 die "protocol $proto does not have ports\n";
181390b0 1995 } else {
e5076eee 1996 if ($nbdport > 1) {
181390b0 1997 if ($multiport == 2) {
41524a58 1998 push @cmd, "--ports $rule->{dport}";
181390b0 1999 } else {
41524a58 2000 push @cmd, "--dports $rule->{dport}";
181390b0 2001 }
e3a1d391 2002 } else {
41524a58 2003 push @cmd, "--dport $rule->{dport}";
e3a1d391 2004 }
4b586518
DM		 2005 }
2006 }
4b586518 2007
181390b0 2008 if ($rule->{sport}) {
48e3963e
WB		 2009 die "protocol $proto does not have ports\n"
2010 if !$PROTOCOLS_WITH_PORTS->{$proto};
e5076eee 2011 if ($nbsport > 1) {
41524a58 2012 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 2013 } else {
41524a58 2014 push @cmd, "--sport $rule->{sport}";
181390b0 2015 }
4b586518 2016 }
181390b0 2017 } elsif ($rule->{dport} || $rule->{sport}) {
93d96f83
DM		 2018 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
2019 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
4b586518
DM		 2020 }
2021
41524a58 2022 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9 2023
1e9c5070
TW		 2024 return scalar(@cmd) ? join(' ', @cmd) : undef;
2025}
2026
2027sub ruleset_generate_action {
2028 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
2029
044409e5
TW		 2030 return $rule->{target} if defined $rule->{target};
2031
1e9c5070
TW		 2032 my @cmd = ();
2033
4e6112f9 2034 if (my $action = $rule->{action}) {
cbb5d6f3 2035 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 2036 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 2037 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 2038 }
3a616aa0 2039
eba0fb64
DM		 2040 return scalar(@cmd) ? join(' ', @cmd) : undef;
2041}
2042
2043sub ruleset_generate_rule {
88c26d5e 2044 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
eba0fb64 2045
e5076eee
DM		 2046 my $rules;
2047
2048 if ($rule->{macro}) {
35d1d6da 2049 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
e5076eee
DM		 2050 } else {
2051 $rules = [ $rule ];
2052 }
2053
30c390f9
TW		 2054 # update all or nothing
2055 my @ipt_rule_cmds;
2056 foreach my $r (@$rules) {
2057 push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf);
2058 }
2059 foreach my $c (@ipt_rule_cmds) {
2060 ruleset_add_ipt_cmd($ruleset, $chain, $c);
2061 }
2062}
2063
2064sub ruleset_generate_rule_old {
2065 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
2066
2067 my $rules;
2068
2069 if ($rule->{macro}) {
2070 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
2071 } else {
2072 $rules = [ $rule ];
2073 }
2074
d4091b82
DM		 2075 # update all or nothing
2076
044409e5 2077 # fixme: lots of temporary ugliness
1e9c5070
TW		 2078 my @mstrs = ();
2079 my @astrs = ();
044409e5
TW		 2080 my @logging = ();
2081 my @logmsg = ();
cbb5d6f3 2082 foreach my $tmp (@$rules) {
1e9c5070
TW		 2083 my $m = ruleset_generate_match($ruleset, $chain, $ipversion, $tmp, $actions, $goto, $cluster_conf, $fw_conf);
2084 my $a = ruleset_generate_action($ruleset, $chain, $ipversion, $tmp, $actions, $goto, $cluster_conf, $fw_conf);
2085 if (defined $m or defined $a) {
2086 push @mstrs, defined($m) ? $m : "";
2087 push @astrs, defined($a) ? $a : "";
044409e5
TW		 2088 push @logging, $tmp->{log};
2089 push @logmsg, $tmp->{logmsg};
e5076eee 2090 }
41524a58 2091 }
d4091b82 2092
1e9c5070 2093 for my $i (0 .. $#mstrs) {
044409e5 2094 ruleset_addrule($ruleset, $chain, $mstrs[$i], $astrs[$i], $logging[$i], $logmsg[$i]);
d4091b82 2095 }
3fa83edf 2096}
0f168d7b 2097
eba0fb64 2098sub ruleset_generate_rule_insert {
88c26d5e 2099 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto) = @_;
eba0fb64 2100
e5076eee
DM		 2101 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
2102
1e9c5070
TW		 2103 my $match = ruleset_generate_match($ruleset, $chain, $ipversion, $rule, $actions, $goto);
2104 my $action = ruleset_generate_action($ruleset, $chain, $ipversion, $rule, $actions, $goto);
2105 if (defined $match && defined $action) {
2106 ruleset_insertrule($ruleset, $chain, $match, $action);
eba0fb64
DM		 2107 }
2108}
3fa83edf
DM		 2109
2110sub ruleset_create_chain {
2111 my ($ruleset, $chain) = @_;
3a616aa0 2112
d050c724 2113 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 2114 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 2115
3fa83edf
DM		 2116 die "chain '$chain' already exists\n" if $ruleset->{$chain};
2117
2118 $ruleset->{$chain} = [];
3a616aa0
AD		 2119}
2120
3fa83edf
DM		 2121sub ruleset_chain_exist {
2122 my ($ruleset, $chain) = @_;
3a616aa0 2123
3fa83edf
DM		 2124 return $ruleset->{$chain} ? 1 : undef;
2125}
3a616aa0 2126
30c390f9
TW		 2127# add an iptables command (like generated by ipt_rule_to_cmds) to a chain
2128sub ruleset_add_ipt_cmd {
2129 my ($ruleset, $chain, $iptcmd) = @_;
2130
2131 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2132
2133 push @{$ruleset->{$chain}}, $iptcmd;
2134}
2135
1e9c5070 2136sub ruleset_addrule {
7f7930f8 2137 my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
1e9c5070
TW		 2138
2139 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2140
7f7930f8
TW		 2141 if (defined($log) && $log) {
2142 my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $log);
2143 push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
2144 }
1e9c5070
TW		 2145 push @{$ruleset->{$chain}}, "-A $chain $match $action";
2146}
2147
3fa83edf 2148sub ruleset_insertrule {
1e9c5070 2149 my ($ruleset, $chain, $match, $action, $log) = @_;
3a616aa0 2150
3fa83edf 2151 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 2152
1e9c5070 2153 unshift @{$ruleset->{$chain}}, "-A $chain $match $action";
3fa83edf 2154}
3a616aa0 2155
782c4cde
DM		 2156sub get_log_rule_base {
2157 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 2158
782c4cde 2159 $vmid = 0 if !defined($vmid);
7f7930f8 2160 $msg = "" if !defined($msg);
782c4cde 2161
cbb5d6f3 2162 # Note: we use special format for prefix to pass further
7f7930f8 2163 # info to log daemon (VMID, LOGLEVEL and CHAIN)
782c4cde
DM		 2164
2165 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
2166}
2167
ead850e8 2168sub ruleset_add_chain_policy {
88c26d5e 2169 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 2170
2171 if ($policy eq 'ACCEPT') {
2172
30c390f9 2173 ruleset_generate_rule_old($ruleset, $chain, $ipversion, { action => 'ACCEPT' },
ead850e8
DM		 2174 { ACCEPT => $accept_action});
2175
2176 } elsif ($policy eq 'DROP') {
2177
1e9c5070 2178 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop");
ead850e8 2179
7f7930f8 2180 ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid);
ead850e8 2181 } elsif ($policy eq 'REJECT') {
1e9c5070 2182 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject");
ead850e8 2183
7f7930f8 2184 ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy:", $vmid);
ead850e8
DM		 2185 } else {
2186 # should not happen
2187 die "internal error: unknown policy '$policy'";
2188 }
2189}
2190
a83abe93 2191sub ruleset_chain_add_ndp {
e8415920 2192 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
a83abe93
WB		 2193 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
2194
1e9c5070 2195 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept);
d7aa51ac 2196 if ($direction ne 'OUT' || $options->{radv}) {
1e9c5070 2197 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept);
d7aa51ac 2198 }
1e9c5070
TW		 2199 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept);
2200 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept);
a83abe93
WB		 2201}
2202
e2943485
DM		 2203sub ruleset_chain_add_conn_filters {
2204 my ($ruleset, $chain, $accept) = @_;
2205
1e9c5070
TW		 2206 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
2207 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept");
e2943485
DM		 2208}
2209
2210sub ruleset_chain_add_input_filters {
88c26d5e 2211 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2428e394
AD		 2212
2213 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 2214 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
2215 ruleset_create_chain($ruleset, "PVEFW-blacklist");
7f7930f8 2216 ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ");
b5831a0d 2217 }
88c26d5e 2218 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1e9c5070 2219 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist");
2428e394 2220 }
e2943485
DM		 2221
2222 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
5b5c42b1 2223 if ($ipversion == 4) {
1e9c5070 2224 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs");
5b5c42b1 2225 }
e2943485
DM		 2226 }
2227
2228 if ($options->{tcpflags}) {
1e9c5070 2229 ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags");
e2943485
DM		 2230 }
2231}
2232
9e15114a 2233sub ruleset_create_vm_chain {
88c26d5e 2234 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 2235
9e15114a 2236 ruleset_create_chain($ruleset, $chain);
b47ecc88 2237 my $accept = generate_nfqueue($options);
3a616aa0 2238
ce15d90b 2239 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
dcafc5fb
WB		 2240 if ($ipversion == 4) {
2241 if ($direction eq 'OUT') {
2242 ruleset_generate_rule($ruleset, $chain, $ipversion,
2243 { action => 'PVEFW-SET-ACCEPT-MARK',
2244 proto => 'udp', sport => 68, dport => 67 });
2245 } else {
2246 ruleset_generate_rule($ruleset, $chain, $ipversion,
2247 { action => 'ACCEPT',
2248 proto => 'udp', sport => 67, dport => 68 });
2249 }
2250 } elsif ($ipversion == 6) {
2251 if ($direction eq 'OUT') {
2252 ruleset_generate_rule($ruleset, $chain, $ipversion,
2253 { action => 'PVEFW-SET-ACCEPT-MARK',
2254 proto => 'udp', sport => 546, dport => 547 });
2255 } else {
2256 ruleset_generate_rule($ruleset, $chain, $ipversion,
2257 { action => 'ACCEPT',
2258 proto => 'udp', sport => 547, dport => 546 });
2259 }
76a2d1e7 2260 }
dcafc5fb 2261
ce15d90b
DM		 2262 }
2263
b21aca2c
DM		 2264 if ($direction eq 'OUT') {
2265 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1e9c5070 2266 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP");
b21aca2c 2267 }
d7aa51ac 2268 if ($ipversion == 6 && !$options->{radv}) {
1e9c5070 2269 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP");
d7aa51ac 2270 }
808d711d 2271 if ($ipfilter_ipset) {
1e9c5070 2272 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP");
808d711d 2273 }
1e9c5070 2274 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
c29f55c9 2275 }
e8415920
WB		 2276
2277 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept";
2278 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
9e15114a
DM		 2279}
2280
4bc6b5ac 2281sub ruleset_add_group_rule {
aedde2c2 2282 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM		 2283
2284 my $group = $rule->{action};
2285 my $group_chain = "GROUP-$group-$direction";
2286 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 2287 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 2288 }
bfc488f6 2289
f8b12fff 2290 if ($direction eq 'OUT' && $rule->{iface_out}) {
1e9c5070 2291 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain");
f8b12fff 2292 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1e9c5070 2293 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain");
4bc6b5ac 2294 } else {
1e9c5070 2295 ruleset_addrule($ruleset, $chain, "", "-j $group_chain");
4bc6b5ac
DM		 2296 }
2297
1e9c5070 2298 ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action");
4bc6b5ac
DM		 2299}
2300
9e15114a 2301sub ruleset_generate_vm_rules {
84870b1a 2302 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion) = @_;
9e15114a
DM		 2303
2304 my $lc_direction = lc($direction);
c29f55c9 2305
6b8ca015
DM		 2306 my $in_accept = generate_nfqueue($options);
2307
92e976b3
DM		 2308 foreach my $rule (@$rules) {
2309 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 2310 next if !$rule->{enable} || $rule->{errors};
006490cb 2311 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 2312
92e976b3 2313 if ($rule->{type} eq 'group') {
4bc6b5ac 2314 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 2315 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM		 2316 } else {
2317 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 2318 eval {
2319 if ($direction eq 'OUT') {
30c390f9 2320 ruleset_generate_rule_old($ruleset, $chain, $ipversion, $rule,
e34d0e58 2321 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
e523d2bb 2322 undef, $cluster_conf, $vmfw_conf);
921dfb33 2323 } else {
30c390f9 2324 ruleset_generate_rule_old($ruleset, $chain, $ipversion, $rule,
e34d0e58 2325 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
e523d2bb 2326 undef, $cluster_conf, $vmfw_conf);
921dfb33
DM		 2327 }
2328 };
2329 warn $@ if $@;
4e6112f9 2330 }
3a616aa0 2331 }
9e15114a
DM		 2332}
2333
b47ecc88
AD		 2334sub generate_nfqueue {
2335 my ($options) = @_;
2336
73089769
DM		 2337 if ($options->{ips}) {
2338 my $action = "NFQUEUE";
2339 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2340 if (defined($3) && defined($1)) {
b47ecc88 2341 $action .= " --queue-balance $1:$3";
73089769 2342 } elsif (defined($1)) {
b47ecc88
AD		 2343 $action .= " --queue-num $1";
2344 }
2345 }
8dc92812 2346 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 2347 return $action;
2348 } else {
2349 return "ACCEPT";
b47ecc88 2350 }
b47ecc88
AD		 2351}
2352
da6fc60b 2353sub ruleset_generate_vm_ipsrules {
a01c32c7 2354 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 2355
2356 if ($options->{ips} && $direction eq 'IN') {
2357 my $nfqueue = generate_nfqueue($options);
2358
a01c32c7 2359 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 2360 ruleset_create_chain($ruleset, "PVEFW-IPS");
2361 }
2362
1e9c5070 2363 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue");
da6fc60b
AD		 2364 }
2365}
2366
9e15114a 2367sub generate_tap_rules_direction {
84870b1a 2368 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM		 2369
2370 my $lc_direction = lc($direction);
2371
2372 my $rules = $vmfw_conf->{rules};
2373
2374 my $options = $vmfw_conf->{options};
2375 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
2376
2377 my $tapchain = "$iface-$direction";
2378
b692f42c 2379 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
88c26d5e 2380 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
74601077 2381 if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 2382
a34cfdd0 2383 # create chain with mac and ip filter
88c26d5e 2384 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
9e15114a 2385
a34cfdd0 2386 if ($options->{enable}) {
84870b1a 2387 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion);
3a616aa0 2388
a34cfdd0 2389 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 2390
a34cfdd0
DM		 2391 # implement policy
2392 my $policy;
ccae0b50 2393
a34cfdd0
DM		 2394 if ($direction eq 'OUT') {
2395 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2396 } else {
72f63fde 2397 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 2398 }
ccae0b50 2399
a34cfdd0
DM		 2400 my $accept = generate_nfqueue($options);
2401 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2402 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
a34cfdd0
DM		 2403 } else {
2404 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
88c26d5e 2405 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
a34cfdd0 2406 }
3a616aa0 2407
3fa83edf 2408 # plug the tap chain to bridge chain
3cc81077 2409 if ($direction eq 'IN') {
a01c32c7 2410 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
1e9c5070 2411 "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain");
3cc81077 2412 } else {
a01c32c7 2413 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
1e9c5070 2414 "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain");
3cc81077 2415 }
3a616aa0
AD		 2416}
2417
d18c1e2b 2418sub enable_host_firewall {
aedde2c2 2419 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
0bd5f137 2420
92e976b3 2421 my $options = $hostfw_conf->{options};
63324b09 2422 my $cluster_options = $cluster_conf->{options};
92e976b3 2423 my $rules = $hostfw_conf->{rules};
35f0c37e 2424 my $cluster_rules = $cluster_conf->{rules};
178a63be 2425
3fa83edf 2426 # host inbound firewall
dec84fcd
DM		 2427 my $chain = "PVEFW-HOST-IN";
2428 ruleset_create_chain($ruleset, $chain);
0bd5f137 2429
178a63be
DM		 2430 my $loglevel = get_option_log_level($options, "log_level_in");
2431
1e9c5070 2432 ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT");
4ac863a6 2433
e2943485 2434 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
e8415920 2435 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
88c26d5e 2436 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
fb424a00 2437
23e888f8
DM		 2438 # we use RETURN because we need to check also tap rules
2439 my $accept_action = 'RETURN';
2440
1e9c5070 2441 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2442
35f0c37e
DM		 2443 # add host rules first, so that cluster wide rules can be overwritten
2444 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2445 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2446 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
bfc488f6 2447
f8b12fff 2448 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 2449
1a9978ed
DM		 2450 eval {
2451 if ($rule->{type} eq 'group') {
aedde2c2 2452 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 2453 } elsif ($rule->{type} eq 'in') {
30c390f9 2454 ruleset_generate_rule_old($ruleset, $chain, $ipversion, $rule,
88c26d5e 2455 { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 2456 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 2457 }
2458 };
2459 warn $@ if $@;
f8b12fff 2460 delete $rule->{iface_in};
0bd5f137 2461 }
eb399cef
DM		 2462
2463 # allow standard traffic for management ipset (includes cluster network)
88c26d5e 2464 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
708ba714 2465 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
1e9c5070
TW		 2466 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API
2467 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2468 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
2469 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH
bfc488f6 2470
afcd29b3
DM		 2471 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2472 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
3bc79f87 2473
eb399cef 2474 # corosync
35d1d6da 2475 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW		 2476 my $corosync_rule = "-p udp --dport 5404:5405";
2477 ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule", "-j $accept_action");
2478 ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action");
3bc79f87 2479 }
0bd5f137 2480
23e888f8 2481 # implement input policy
63324b09 2482 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
88c26d5e 2483 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
0bd5f137 2484
3fa83edf 2485 # host outbound firewall
aadd745e 2486 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 2487 ruleset_create_chain($ruleset, $chain);
2488
178a63be
DM		 2489 $loglevel = get_option_log_level($options, "log_level_out");
2490
1e9c5070 2491 ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT");
e2943485
DM		 2492
2493 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2494
23e888f8
DM		 2495 # we use RETURN because we may want to check other thigs later
2496 $accept_action = 'RETURN';
e8415920 2497 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action");
23e888f8 2498
1e9c5070 2499 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2500
35f0c37e
DM		 2501 # add host rules first, so that cluster wide rules can be overwritten
2502 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2503 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2504 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
5383df39 2505
f8b12fff 2506 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed
DM		 2507 eval {
2508 if ($rule->{type} eq 'group') {
aedde2c2 2509 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 2510 } elsif ($rule->{type} eq 'out') {
30c390f9 2511 ruleset_generate_rule_old($ruleset, $chain, $ipversion,
88c26d5e 2512 $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
e523d2bb 2513 undef, $cluster_conf, $hostfw_conf);
1a9978ed
DM		 2514 }
2515 };
2516 warn $@ if $@;
f8b12fff 2517 delete $rule->{iface_out};
0bd5f137
AD		 2518 }
2519
3bc79f87 2520 # allow standard traffic on cluster network
35d1d6da 2521 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW		 2522 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API
2523 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH
2524 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2525 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
bfc488f6 2526
1e9c5070
TW		 2527 my $corosync_rule = "-p udp --dport 5404:5405";
2528 ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule", "-j $accept_action");
2529 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action");
3bc79f87
DM		 2530 }
2531
23e888f8 2532 # implement output policy
63324b09 2533 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
88c26d5e 2534 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
6158271d 2535
1e9c5070
TW		 2536 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT");
2537 ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN");
9d31b418
AD		 2538}
2539
2540sub generate_group_rules {
aedde2c2 2541 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2542
c6f5cc88 2543 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2544
b4deedab
DM		 2545 if (!$rules) {
2546 warn "no such security group '$group'\n";
2547 $rules = []; # create empty chain
2548 }
2549
3fa83edf 2550 my $chain = "GROUP-${group}-IN";
9d31b418 2551
3fa83edf 2552 ruleset_create_chain($ruleset, $chain);
1e9c5070 2553 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2554
92e976b3
DM		 2555 foreach my $rule (@$rules) {
2556 next if $rule->{type} ne 'in';
aedde2c2 2557 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
30c390f9 2558 ruleset_generate_rule_old($ruleset, $chain, $ipversion, $rule,
88c26d5e
DM		 2559 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
2560 undef, $cluster_conf);
9d31b418
AD		 2561 }
2562
3fa83edf 2563 $chain = "GROUP-${group}-OUT";
9d31b418 2564
3fa83edf 2565 ruleset_create_chain($ruleset, $chain);
1e9c5070 2566 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2567
92e976b3
DM		 2568 foreach my $rule (@$rules) {
2569 next if $rule->{type} ne 'out';
aedde2c2 2570 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM		 2571 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2572 # check also other tap rules later
30c390f9 2573 ruleset_generate_rule_old($ruleset, $chain, $ipversion, $rule,
88c26d5e
DM		 2574 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" },
2575 undef, $cluster_conf);
9d31b418 2576 }
9d31b418
AD		 2577}
2578
51bae274
DM		 2579my $MAX_NETS = 32;
2580my $valid_netdev_names = {};
2581for (my $i = 0; $i < $MAX_NETS; $i++) {
2582 $valid_netdev_names->{"net$i"} = 1;
2583}
5e1267a5 2584
fe3d79b4
WB		 2585sub get_mark_values {
2586 my ($value, $mask) = @_;
2587 $value = hex($value) if $value =~ /^0x/;
2588 $mask = hex($mask) if defined($mask) && $mask =~ /^0x/;
2589 $mask = 0xffffffff if !defined($mask);
2590 return ($value, $mask);
2591}
2592
51bae274 2593sub parse_fw_rule {
a523e057 2594 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
5e1267a5 2595
d4cda423
DM		 2596 my $orig_line = $line;
2597
6d9246e7
DM		 2598 my $rule = {};
2599
11bac5c2 2600 # we can add single line comments to the end of the rule
6d9246e7
DM		 2601 if ($line =~ s/#\s*(.*?)\s*$//) {
2602 $rule->{comment} = decode('utf8', $1);
2603 }
11bac5c2
DM		 2604
2605 # we can disable a rule when prefixed with '|'
ea9e5116 2606
6d9246e7 2607 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2608
dba740a9
DM		 2609 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2610 die "unable to parse rule: $line\n";
6d9246e7
DM		 2611
2612 $rule->{type} = lc($1);
2613 $rule->{action} = $2;
2614
2615 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2616 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2617 $rule->{macro} = $1;
2618 $rule->{action} = $2;
92e976b3 2619 }
51bae274
DM		 2620 }
2621
dba740a9
DM		 2622 while (length($line)) {
2623 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2624 $rule->{iface} = $1;
dba740a9
DM		 2625 next;
2626 }
51bae274 2627
6d9246e7 2628 last if $rule->{type} eq 'group';
51bae274 2629
dba740a9 2630 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2631 $rule->{proto} = $1;
dba740a9
DM		 2632 next;
2633 }
6d9246e7 2634
dba740a9 2635 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2636 $rule->{dport} = $1;
dba740a9
DM		 2637 next;
2638 }
6d9246e7 2639
dba740a9 2640 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2641 $rule->{sport} = $1;
dba740a9
DM		 2642 next;
2643 }
2644 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2645 $rule->{source} = $1;
dba740a9
DM		 2646 next;
2647 }
2648 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2649 $rule->{dest} = $1;
dba740a9
DM		 2650 next;
2651 }
51bae274 2652
dba740a9
DM		 2653 last;
2654 }
ba791b1f 2655
dba740a9 2656 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2657
a523e057 2658 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
eedcb564
WB		 2659 if ($rule->{errors}) {
2660 # The verbose flag really means we're running from the CLI and want
2661 # output on the console - in the other case we really want such errors
2662 # to go into the syslog instead.
2663 my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) };
2664 $log->("$prefix - errors in rule parameters: $orig_line\n");
d4cda423 2665 foreach my $p (keys %{$rule->{errors}}) {
eedcb564 2666 $log->(" $p: $rule->{errors}->{$p}\n");
d4cda423
DM		 2667 }
2668 }
6d9246e7
DM		 2669
2670 return $rule;
51bae274
DM		 2671}
2672
2d404ffc 2673sub parse_vmfw_option {
85c6eaed
DM		 2674 my ($line) = @_;
2675
2676 my ($opt, $value);
2677
178a63be
DM		 2678 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2679
74601077 2680 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2681 $opt = lc($1);
2682 $value = int($2);
178a63be
DM		 2683 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2684 $opt = lc($1);
2685 $value = $2 ? lc($3) : '';
72f63fde 2686 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2687 $opt = lc($1);
2688 $value = uc($3);
b47ecc88
AD		 2689 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2690 $opt = lc($1);
2691 $value = $2;
9c6b6efd 2692 } else {
85c6eaed
DM		 2693 die "can't parse option '$line'\n"
2694 }
2695
2696 return ($opt, $value);
2697}
2698
2d404ffc
DM		 2699sub parse_hostfw_option {
2700 my ($line) = @_;
2701
2702 my ($opt, $value);
2703
2704 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2705
a83abe93 2706 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2707 $opt = lc($1);
2708 $value = int($2);
178a63be 2709 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2710 $opt = lc($1);
2711 $value = $2 ? lc($3) : '';
28c082a1 2712 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 2713 $opt = lc($1);
2714 $value = int($2);
2d404ffc 2715 } else {
2d404ffc
DM		 2716 die "can't parse option '$line'\n"
2717 }
2718
2719 return ($opt, $value);
2720}
2721
c6f5cc88
DM		 2722sub parse_clusterfw_option {
2723 my ($line) = @_;
2724
2725 my ($opt, $value);
2726
72d055fc 2727 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
c6f5cc88
DM		 2728 $opt = lc($1);
2729 $value = int($2);
72d055fc
AG		 2730 if (($value > 1) && ((time() - $value) > 60)) {
2731 $value = 0
2732 }
63324b09
DM		 2733 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2734 $opt = lc($1);
2735 $value = uc($3);
c6f5cc88 2736 } else {
c6f5cc88
DM		 2737 die "can't parse option '$line'\n"
2738 }
2739
2740 return ($opt, $value);
2741}
2742
6c221576
DM		 2743sub resolve_alias {
2744 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2745
6d959e3f 2746 my $alias = lc($cidr);
04f5088f 2747 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
6d959e3f 2748 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2749
6d959e3f
DM		 2750 die "no such alias '$cidr'\n" if !$e;;
2751
2752 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM		 2753}
2754
ae029a88
DM		 2755sub parse_ip_or_cidr {
2756 my ($cidr) = @_;
2757
2758 my $ipversion;
2759
2760 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2761 $cidr =~ s|/128$||;
2762 $ipversion = 6;
2763 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2764 $cidr =~ s|/32$||;
2765 $ipversion = 4;
2766 } else {
2767 die "value does not look like a valid IP address or CIDR network\n";
2768 }
2769
2770 return wantarray ? ($cidr, $ipversion) : $cidr;
2771}
2772
e76a9f53 2773sub parse_alias {
92e1209b
AD		 2774 my ($line) = @_;
2775
81d574a7
DM		 2776 # we can add single line comments to the end of the line
2777 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2778
92e1209b 2779 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2780 my ($name, $cidr) = ($1, $2);
ae029a88
DM		 2781 my $ipversion;
2782
2783 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2784
81d574a7
DM		 2785 my $data = {
2786 name => $name,
2787 cidr => $cidr,
70e524eb 2788 ipversion => $ipversion,
81d574a7
DM		 2789 };
2790 $data->{comment} = $comment if $comment;
2791 return $data;
92e1209b
AD		 2792 }
2793
81d574a7 2794 return undef;
92e1209b
AD		 2795}
2796
e5cd1ee0 2797sub generic_fw_config_parser {
1210ae94 2798 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
5e1267a5 2799
51bae274
DM		 2800 my $section;
2801 my $group;
2802
1210ae94 2803 my $res = $empty_conf;
6158271d 2804
51bae274
DM		 2805 while (defined(my $line = <$fh>)) {
2806 next if $line =~ m/^#/;
2807 next if $line =~ m/^\s*$/;
2808
c8c534f7
DM		 2809 chomp $line;
2810
961b4928
DM		 2811 my $linenr = $fh->input_line_number();
2812 my $prefix = "$filename (line $linenr)";
2813
1210ae94 2814 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2815 $section = 'options';
2816 next;
2817 }
2818
1210ae94 2819 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2820 $section = 'aliases';
2821 next;
2822 }
2823
1210ae94 2824 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2825 $section = 'groups';
92e976b3 2826 $group = lc($1);
0d22acb3 2827 my $comment = $2;
351052d1
DM		 2828 eval {
2829 die "security group name too long\n" if length($group) > $max_group_name_length;
2830 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2831 };
2832 if (my $err = $@) {
2833 ($section, $group, $comment) = undef;
2834 warn "$prefix: $err";
2835 next;
2836 }
2837
c85c87f9 2838 $res->{$section}->{$group} = [];
649e4d57
DM		 2839 $res->{group_comments}->{$group} = decode('utf8', $comment)
2840 if $comment;
51bae274
DM		 2841 next;
2842 }
34cdedfa 2843
1210ae94 2844 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2845 $section = 'rules';
2846 next;
2847 }
cbb5d6f3 2848
1210ae94 2849 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2850 $section = 'ipset';
2851 $group = lc($1);
d72c631c 2852 my $comment = $2;
351052d1
DM		 2853 eval {
2854 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2855 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2856 };
2857 if (my $err = $@) {
2858 ($section, $group, $comment) = undef;
2859 warn "$prefix: $err";
2860 next;
2861 }
2862
c85c87f9 2863 $res->{$section}->{$group} = [];
e34d0e58 2864 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2865 if $comment;
34cdedfa
AD		 2866 next;
2867 }
2868
c6f5cc88 2869 if (!$section) {
cbb5d6f3 2870 warn "$prefix: skip line - no section\n";
51bae274
DM		 2871 next;
2872 }
2873
c6f5cc88
DM		 2874 if ($section eq 'options') {
2875 eval {
1210ae94
DM		 2876 my ($opt, $value);
2877 if ($rule_env eq 'cluster') {
2878 ($opt, $value) = parse_clusterfw_option($line);
2879 } elsif ($rule_env eq 'host') {
2880 ($opt, $value) = parse_hostfw_option($line);
2881 } else {
2882 ($opt, $value) = parse_vmfw_option($line);
2883 }
c6f5cc88
DM		 2884 $res->{options}->{$opt} = $value;
2885 };
2886 warn "$prefix: $@" if $@;
92e1209b
AD		 2887 } elsif ($section eq 'aliases') {
2888 eval {
e76a9f53 2889 my $data = parse_alias($line);
81d574a7 2890 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2891 };
2892 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2893 } elsif ($section eq 'rules') {
2894 my $rule;
1210ae94 2895 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
c6f5cc88
DM		 2896 if (my $err = $@) {
2897 warn "$prefix: $err";
2898 next;
2899 }
2900 push @{$res->{$section}}, $rule;
2901 } elsif ($section eq 'groups') {
34cdedfa 2902 my $rule;
1210ae94 2903 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
34cdedfa
AD		 2904 if (my $err = $@) {
2905 warn "$prefix: $err";
2906 next;
2907 }
3f95d14a 2908 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2909 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2910 # we can add single line comments to the end of the rule
2911 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2912
30f1b100 2913 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2914 my $nomatch = $1;
9d6f90e6 2915 my $cidr = $2;
d46b1ef6
DM		 2916 my $errors;
2917
2918 if ($nomatch && !$feature_ipset_nomatch) {
2919 $errors->{nomatch} = "nomatch not supported by kernel";
2920 }
2a052ee3 2921
4803b296
DM		 2922 eval {
2923 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2924 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2925 } else {
ae029a88 2926 $cidr = parse_ip_or_cidr($cidr);
92e1209b 2927 }
4803b296
DM		 2928 };
2929 if (my $err = $@) {
c8c534f7 2930 chomp $err;
d46b1ef6 2931 $errors->{cidr} = $err;
2a052ee3 2932 }
2a052ee3 2933
b14db52f
WB		 2934 if ($cidr =~ m!/0+$!) {
2935 $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n";
2936 }
2937
e34d0e58 2938 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2939 $entry->{nomatch} = 1 if $nomatch;
2940 $entry->{comment} = $comment if $comment;
d46b1ef6 2941 $entry->{errors} = $errors if $errors;
e34d0e58 2942
c8c534f7 2943 if ($verbose && $errors) {
9a3061c7 2944 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 2945 foreach my $p (keys %{$errors}) {
2946 warn " $p: $errors->{$p}\n";
2947 }
2948 }
2949
9d6f90e6 2950 push @{$res->{$section}->{$group}}, $entry;
1210ae94
DM		 2951 } else {
2952 warn "$prefix: skip line - unknown section\n";
2953 next;
51bae274 2954 }
5e1267a5
DM		 2955 }
2956
2957 return $res;
2958}
2959
e5cd1ee0 2960sub parse_hostfw_config {
1210ae94
DM		 2961 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2962
2963 my $empty_conf = { rules => [], options => {}};
2964
e5cd1ee0 2965 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
1210ae94
DM		 2966}
2967
e5cd1ee0 2968sub parse_vmfw_config {
1210ae94
DM		 2969 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2970
2971 my $empty_conf = {
2972 rules => [],
2973 options => {},
2974 aliases => {},
2975 ipset => {} ,
2976 ipset_comments => {},
2977 };
2978
e5cd1ee0 2979 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
1210ae94
DM		 2980}
2981
e5cd1ee0 2982sub parse_clusterfw_config {
1210ae94
DM		 2983 my ($filename, $fh, $verbose) = @_;
2984
2985 my $section;
2986 my $group;
2987
2988 my $empty_conf = {
2989 rules => [],
2990 options => {},
2991 aliases => {},
2992 groups => {},
2993 group_comments => {},
2994 ipset => {} ,
2995 ipset_comments => {},
2996 };
2997
e5cd1ee0 2998 return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
1210ae94
DM		 2999}
3000
06320eb0
DM		 3001sub run_locked {
3002 my ($code, @param) = @_;
3003
3004 my $timeout = 10;
3005
3006 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
3007
3008 die $@ if $@;
3009
3010 return $res;
3011}
3012
5e1267a5
DM		 3013sub read_local_vm_config {
3014
5e1267a5 3015 my $qemu = {};
3b4882dc 3016 my $lxc = {};
5e1267a5 3017
fdefeeab 3018 my $vmdata = { qemu => $qemu, lxc => $lxc };
5e1267a5 3019
c8301d63
DM		 3020 my $vmlist = PVE::Cluster::get_vmlist();
3021 return $vmdata if !$vmlist || !$vmlist->{ids};
3022 my $ids = $vmlist->{ids};
3023
3024 foreach my $vmid (keys %$ids) {
3025 next if !$vmid; # skip VE0
3026 my $d = $ids->{$vmid};
3027 next if !$d->{node} || $d->{node} ne $nodename;
3028 next if !$d->{type};
fdefeeab 3029 if ($d->{type} eq 'qemu') {
d9fee004 3030 if ($have_qemu_server) {
b5a16dd3 3031 my $cfspath = PVE::QemuConfig->cfs_config_path($vmid);
d9fee004
DM		 3032 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3033 $qemu->{$vmid} = $conf;
3034 }
c8301d63 3035 }
3b4882dc
AG		 3036 } elsif ($d->{type} eq 'lxc') {
3037 if ($have_lxc) {
a7c85d56 3038 my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
3b4882dc
AG		 3039 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3040 $lxc->{$vmid} = $conf;
3041 }
3042 }
3043 }
5e1267a5 3044 }
d9fee004 3045
5e1267a5
DM		 3046 return $vmdata;
3047};
3048
e7b35711 3049sub load_vmfw_conf {
a523e057 3050 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
e7b35711
DM		 3051
3052 my $vmfw_conf = {};
3053
21053409 3054 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177
DM		 3055
3056 my $filename = "$dir/$vmid.fw";
e7b35711 3057 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 3058 $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
708ba714 3059 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 3060 }
3061
3062 return $vmfw_conf;
3063}
3064
464f933e 3065my $format_rules = sub {
dba740a9 3066 my ($rules, $allow_iface) = @_;
464f933e
DM		 3067
3068 my $raw = '';
3069
3070 foreach my $rule (@$rules) {
c14dacdf 3071 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 3072 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
3073 $raw .= uc($rule->{type});
7ca36671
DM		 3074 if ($rule->{macro}) {
3075 $raw .= " $rule->{macro}($rule->{action})";
3076 } else {
3077 $raw .= " " . $rule->{action};
3078 }
dba740a9
DM		 3079 if ($allow_iface && $rule->{iface}) {
3080 $raw .= " -i $rule->{iface}";
3081 }
c14dacdf
DM		 3082
3083 if ($rule->{type} ne 'group') {
dba740a9
DM		 3084 $raw .= " -source $rule->{source}" if $rule->{source};
3085 $raw .= " -dest $rule->{dest}" if $rule->{dest};
3086 $raw .= " -p $rule->{proto}" if $rule->{proto};
3087 $raw .= " -dport $rule->{dport}" if $rule->{dport};
3088 $raw .= " -sport $rule->{sport}" if $rule->{sport};
c14dacdf
DM		 3089 }
3090
cbb5d6f3 3091 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 3092 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
3093 $raw .= "\n";
3094 } else {
c14dacdf 3095 die "unknown rule type '$rule->{type}'";
464f933e
DM		 3096 }
3097 }
3098
3099 return $raw;
3100};
3101
3102my $format_options = sub {
68c90e21
DM		 3103 my ($options) = @_;
3104
3105 my $raw = '';
464f933e
DM		 3106
3107 $raw .= "[OPTIONS]\n\n";
3108 foreach my $opt (keys %$options) {
3109 $raw .= "$opt: $options->{$opt}\n";
3110 }
3111 $raw .= "\n";
68c90e21
DM		 3112
3113 return $raw;
464f933e
DM		 3114};
3115
0d5f0a0f
DM		 3116my $format_aliases = sub {
3117 my ($aliases) = @_;
3118
3119 my $raw = '';
3120
3121 $raw .= "[ALIASES]\n\n";
3122 foreach my $k (keys %$aliases) {
81d574a7
DM		 3123 my $e = $aliases->{$k};
3124 $raw .= "$e->{name} $e->{cidr}";
3125 $raw .= " # " . encode('utf8', $e->{comment})
3126 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
3127 $raw .= "\n";
0d5f0a0f
DM		 3128 }
3129 $raw .= "\n";
3130
3131 return $raw;
3132};
3133
1210ae94
DM		 3134my $format_ipsets = sub {
3135 my ($fw_conf) = @_;
3136
9d6f90e6
DM		 3137 my $raw = '';
3138
1210ae94
DM		 3139 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
3140 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
3141 my $utf8comment = encode('utf8', $comment);
3142 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
3143 } else {
3144 $raw .= "[IPSET $ipset]\n\n";
3145 }
3146 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 3147
1210ae94
DM		 3148 my $nethash = {};
3149 foreach my $entry (@$options) {
3150 $nethash->{$entry->{cidr}} = $entry;
3151 }
3152
3153 foreach my $cidr (sort keys %$nethash) {
3154 my $entry = $nethash->{$cidr};
3155 my $line = $entry->{nomatch} ? '!' : '';
3156 $line .= $entry->{cidr};
3157 $line .= " # " . encode('utf8', $entry->{comment})
3158 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
3159 $raw .= "$line\n";
3160 }
3161
3162 $raw .= "\n";
9d6f90e6 3163 }
e34d0e58 3164
9d6f90e6
DM		 3165 return $raw;
3166};
3167
464f933e
DM		 3168sub save_vmfw_conf {
3169 my ($vmid, $vmfw_conf) = @_;
3170
3171 my $raw = '';
3172
3173 my $options = $vmfw_conf->{options};
89ea63c8 3174 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3175
e76a9f53 3176 my $aliases = $vmfw_conf->{aliases};
89ea63c8 3177 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 3178
89ea63c8 3179 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 3180
8824b2f0 3181 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 3182 if ($rules && scalar(@$rules)) {
464f933e
DM		 3183 $raw .= "[RULES]\n\n";
3184 $raw .= &$format_rules($rules, 1);
3185 $raw .= "\n";
3186 }
3187
21053409 3188 my $filename = "$pvefw_conf_dir/$vmid.fw";
c32e04e6
FG		 3189 if ($raw) {
3190 mkdir $pvefw_conf_dir;
3191 PVE::Tools::file_set_contents($filename, $raw);
3192 } else {
3193 unlink $filename;
3194 }
464f933e
DM		 3195}
3196
edee9035
AG		 3197sub remove_vmfw_conf {
3198 my ($vmid) = @_;
3199
3200 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
3201
3202 unlink $vmfw_conffile;
3203}
3204
5471ff7c
AG		 3205sub clone_vmfw_conf {
3206 my ($vmid, $newid) = @_;
3207
3208 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
3209 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
3210
3211 if (-f $clonevm_conffile) {
3212 unlink $clonevm_conffile;
3213 }
3214 if (-f $sourcevm_conffile) {
3215 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
3216 PVE::Tools::file_set_contents($clonevm_conffile, $data);
3217 }
3218}
3219
6fc63ffd 3220sub read_vm_firewall_configs {
a523e057 3221 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
8aef5177 3222
6fc63ffd 3223 my $vmfw_configs = {};
c8301d63 3224
b6b8e6ad 3225 foreach my $vmid (keys %{$vmdata->{qemu}}) {
a523e057 3226 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose);
b6b8e6ad
DM		 3227 next if !$vmfw_conf->{options}; # skip if file does not exists
3228 $vmfw_configs->{$vmid} = $vmfw_conf;
3229 }
3b4882dc
AG		 3230 foreach my $vmid (keys %{$vmdata->{lxc}}) {
3231 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose);
3232 next if !$vmfw_conf->{options}; # skip if file does not exists
3233 $vmfw_configs->{$vmid} = $vmfw_conf;
3234 }
5e1267a5 3235
6fc63ffd 3236 return $vmfw_configs;
5e1267a5
DM		 3237}
3238
2d404ffc
DM		 3239sub get_option_log_level {
3240 my ($options, $k) = @_;
3241
3242 my $v = $options->{$k};
178a63be 3243 $v = $default_log_level if !defined($v);
2d404ffc
DM		 3244
3245 return undef if $v eq '' || $v eq 'nolog';
3246
3247 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
3248
3249 return $v if ($v >= 0) && ($v <= 7);
3250
3251 warn "unknown log level ($k = '$v')\n";
3252
3253 return undef;
3254}
3255
d8f2505e 3256sub generate_std_chains {
db8a955f
DM		 3257 my ($ruleset, $options, $ipversion) = @_;
3258
3259 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
cbb5d6f3 3260
2d404ffc 3261 my $loglevel = get_option_log_level($options, 'smurf_log_level');
044409e5
TW		 3262 my $chain = 'PVEFW-smurflog';
3263 if ( $std_chains->{$chain} ) {
3264 foreach my $r (@{$std_chains->{$chain}}) {
3265 $r->{log} = $loglevel;
3266 }
db8a955f 3267 }
2d404ffc
DM		 3268
3269 # same as shorewall logflags action.
3270 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 3271 $chain = 'PVEFW-logflags';
044409e5
TW		 3272 if ( $std_chains->{$chain} ) {
3273 foreach my $r (@{$std_chains->{$chain}}) {
3274 $r->{log} = $loglevel;
3275 }
3276 }
d8f2505e 3277
db8a955f 3278 foreach my $chain (keys %$std_chains) {
d8f2505e 3279 ruleset_create_chain($ruleset, $chain);
db8a955f 3280 foreach my $rule (@{$std_chains->{$chain}}) {
d8f2505e 3281 if (ref($rule)) {
88c26d5e 3282 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
d8f2505e 3283 } else {
044409e5 3284 die "rule $rule as string - should not happen";
d8f2505e
DM		 3285 }
3286 }
3287 }
3288}
3289
34cdedfa 3290sub generate_ipset_chains {
74601077 3291 my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_;
34cdedfa 3292
74601077 3293 foreach my $ipset (keys %{$ipsets}) {
34cdedfa 3294
74601077 3295 my $options = $ipsets->{$ipset};
34cdedfa 3296
ebf72e49
WB		 3297 if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) {
3298 if (my $ips = $device_ips->{$1}) {
3299 $options = [@$options, @$ips];
3300 }
3301 }
3302
88c26d5e
DM		 3303 # remove duplicates
3304 my $nethash = {};
3305 foreach my $entry (@$options) {
3306 next if $entry->{errors}; # skip entries with errors
3307 eval {
3308 my ($cidr, $ver);
3309 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
3310 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
3311 } else {
3312 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
3313 }
3314 #http://backreference.org/2013/03/01/ipv6-address-normalization/
3315 if ($ver == 6) {
e0a9139f
WB		 3316 # ip_compress_address takes an address only, no CIDR
3317 my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@);
3318 $cidr = lc(Net::IP::ip_compress_address($addr, 6));
3319 $cidr .= $prefix_len if defined($prefix_len);
88c26d5e
DM		 3320 $cidr =~ s|/128$||;
3321 } else {
3322 $cidr =~ s|/32$||;
3323 }
34cdedfa 3324
88c26d5e
DM		 3325 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
3326 };
3327 warn $@ if $@;
3328 }
6d959e3f 3329
88c26d5e
DM		 3330 foreach my $ipversion (4, 6) {
3331 my $data = $nethash->{$ipversion};
30f1b100 3332
88c26d5e 3333 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
6d959e3f 3334
88c26d5e
DM		 3335 my $hashsize = scalar(@$options);
3336 if ($hashsize <= 64) {
3337 $hashsize = 64;
3338 } else {
3339 $hashsize = round_powerof2($hashsize);
3340 }
6d959e3f 3341
88c26d5e 3342 my $family = $ipversion == "6" ? "inet6" : "inet";
30f1b100 3343
88c26d5e 3344 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
6d959e3f 3345
88c26d5e
DM		 3346 foreach my $cidr (sort keys %$data) {
3347 my $entry = $data->{$cidr};
6d959e3f 3348
88c26d5e
DM		 3349 my $cmd = "add $name $cidr";
3350 if ($entry->{nomatch}) {
3351 if ($feature_ipset_nomatch) {
3352 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3353 } else {
3354 warn "ignore !$cidr - nomatch not supported by kernel\n";
3355 }
6d959e3f 3356 } else {
88c26d5e 3357 push @{$ipset_ruleset->{$name}}, $cmd;
6d959e3f 3358 }
9d6f90e6 3359 }
9d6f90e6 3360 }
34cdedfa 3361 }
2a052ee3
AD		 3362}
3363
3364sub round_powerof2 {
dd7a13fd 3365 my ($int) = @_;
2a052ee3 3366
dd7a13fd
DM		 3367 $int--;
3368 $int |= $int >> $_ foreach (1,2,4,8,16);
3369 return ++$int;
34cdedfa
AD		 3370}
3371
fca39c2c 3372sub load_clusterfw_conf {
d4cda423 3373 my ($filename, $verbose) = @_;
8aef5177
DM		 3374
3375 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 3376
fca39c2c 3377 my $cluster_conf = {};
8aef5177 3378 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 3379 $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
51bae274 3380 }
5e1267a5 3381
fca39c2c 3382 return $cluster_conf;
e5d76bde
DM		 3383}
3384
fca39c2c
DM		 3385sub save_clusterfw_conf {
3386 my ($cluster_conf) = @_;
9c7e0858
DM		 3387
3388 my $raw = '';
9c7e0858 3389
c6f5cc88 3390 my $options = $cluster_conf->{options};
89ea63c8 3391 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 3392
0d5f0a0f 3393 my $aliases = $cluster_conf->{aliases};
89ea63c8 3394 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 3395
89ea63c8 3396 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
1210ae94 3397
c6f5cc88 3398 my $rules = $cluster_conf->{rules};
89ea63c8 3399 if ($rules && scalar(@$rules)) {
c6f5cc88 3400 $raw .= "[RULES]\n\n";
63c91681 3401 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 3402 $raw .= "\n";
3403 }
3404
89ea63c8
DM		 3405 if ($cluster_conf->{groups}) {
3406 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3407 my $rules = $cluster_conf->{groups}->{$group};
3408 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3409 my $utf8comment = encode('utf8', $comment);
3410 $raw .= "[group $group] # $utf8comment\n\n";
3411 } else {
3412 $raw .= "[group $group]\n\n";
3413 }
0d22acb3 3414
89ea63c8
DM		 3415 $raw .= &$format_rules($rules, 0);
3416 $raw .= "\n";
3417 }
9c7e0858
DM		 3418 }
3419
c32e04e6
FG		 3420 if ($raw) {
3421 mkdir $pvefw_conf_dir;
3422 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3423 } else {
3424 unlink $clusterfw_conf_filename;
3425 }
9c7e0858
DM		 3426}
3427
8b27beb9 3428sub load_hostfw_conf {
a523e057 3429 my ($cluster_conf, $filename, $verbose) = @_;
8aef5177
DM		 3430
3431 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 3432
3433 my $hostfw_conf = {};
8aef5177 3434 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 3435 $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
8b27beb9
DM		 3436 }
3437 return $hostfw_conf;
3438}
3439
63c91681
DM		 3440sub save_hostfw_conf {
3441 my ($hostfw_conf) = @_;
3442
3443 my $raw = '';
3444
3445 my $options = $hostfw_conf->{options};
89ea63c8 3446 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3447
63c91681 3448 my $rules = $hostfw_conf->{rules};
89ea63c8 3449 if ($rules && scalar(@$rules)) {
63c91681
DM		 3450 $raw .= "[RULES]\n\n";
3451 $raw .= &$format_rules($rules, 1);
3452 $raw .= "\n";
3453 }
3454
c32e04e6
FG		 3455 if ($raw) {
3456 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3457 } else {
3458 unlink $hostfw_conf_filename;
3459 }
63c91681
DM		 3460}
3461
e5d76bde 3462sub compile {
d4cda423 3463 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3dfa8a7f 3464
8aef5177
DM		 3465 my $vmfw_configs;
3466
cfd7cd9c
TW		 3467 # fixme: once we read standard chains from config this needs to be put in test/standard cases below
3468 $pve_std_chains = dclone($pve_std_chains_conf);
3469
8aef5177
DM		 3470 if ($vmdata) { # test mode
3471 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3472 my $filename = "$testdir/cluster.fw";
d4cda423 3473 $cluster_conf = load_clusterfw_conf($filename, $verbose);
8aef5177
DM		 3474
3475 $filename = "$testdir/host.fw";
a523e057 3476 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
8aef5177 3477
a523e057 3478 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
8aef5177 3479 } else { # normal operation
d4cda423 3480 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
8aef5177 3481
a523e057 3482 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
8aef5177
DM		 3483
3484 $vmdata = read_local_vm_config();
a523e057 3485 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
8aef5177 3486 }
3dfa8a7f 3487
147dd882 3488 return ({},{},{}) if !$cluster_conf->{options}->{enable};
9268573a 3489
525778d7
DM		 3490 my $localnet;
3491 if ($cluster_conf->{aliases}->{local_network}) {
3492 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3493 } else {
afcd29b3
DM		 3494 my $localnet_ver;
3495 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3496
3497 $cluster_conf->{aliases}->{local_network} = {
3498 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
525778d7
DM		 3499 }
3500
3501 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 3502
147dd882
WB		 3503 my $ruleset = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
3504 my $rulesetv6 = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose);
3505 my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata);
3506
3507 return ($ruleset, $ipset_ruleset, $rulesetv6);
3508}
3509
3510sub compile_iptables_filter {
3511 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
085fd492 3512
3fa83edf
DM		 3513 my $ruleset = {};
3514
dec84fcd
DM		 3515 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3516 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 3517
fadb13dd 3518 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 3519
8b27beb9 3520 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 3521
88733a74
AD		 3522 # fixme: what log level should we use here?
3523 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3524
097820b0 3525 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
88733a74 3526
e2943485 3527 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
88c26d5e 3528 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
e2943485 3529
1e9c5070 3530 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN");
e2943485
DM		 3531
3532 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
1e9c5070 3533 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT");
e2943485 3534
db8a955f 3535 generate_std_chains($ruleset, $hostfw_options, $ipversion);
fadb13dd 3536
6d2ab017 3537 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 3538
35d1d6da 3539 if ($hostfw_enable) {
aedde2c2 3540 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
1a9978ed
DM		 3541 warn $@ if $@; # just to be sure - should not happen
3542 }
3fa83edf 3543
6158271d 3544 # generate firewall rules for QEMU VMs
0a0ba19e 3545 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 3546 eval {
3547 my $conf = $vmdata->{qemu}->{$vmid};
3548 my $vmfw_conf = $vmfw_configs->{$vmid};
3549 return if !$vmfw_conf;
1a9978ed 3550
0a0ba19e 3551 foreach my $netid (sort keys %$conf) {
1a9978ed
DM		 3552 next if $netid !~ m/^net(\d+)$/;
3553 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3554 next if !$net->{firewall};
3555 my $iface = "tap${vmid}i$1";
3556
3557 my $macaddr = $net->{macaddr};
3558 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3559 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3560 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3561 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed
DM		 3562 }
3563 };
3564 warn $@ if $@; # just to be sure - should not happen
3fa83edf 3565 }
c8301d63 3566
3b4882dc 3567 # generate firewall rules for LXC containers
0a0ba19e 3568 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
3b4882dc
AG		 3569 eval {
3570 my $conf = $vmdata->{lxc}->{$vmid};
3571 my $vmfw_conf = $vmfw_configs->{$vmid};
3572 return if !$vmfw_conf;
3573
3b4882dc 3574 if ($vmfw_conf->{options}->{enable}) {
0a0ba19e 3575 foreach my $netid (sort keys %$conf) {
3b4882dc 3576 next if $netid !~ m/^net(\d+)$/;
a7c85d56 3577 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3b4882dc
AG		 3578 next if !$net->{firewall};
3579 my $iface = "veth${vmid}i$1";
3580 my $macaddr = $net->{hwaddr};
3581 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3582 $vmfw_conf, $vmid, 'IN', $ipversion);
3583 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3584 $vmfw_conf, $vmid, 'OUT', $ipversion);
3585 }
3586 }
3587 };
3588 warn $@ if $@; # just to be sure - should not happen
3589 }
3590
097820b0 3591 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
1e9c5070 3592 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS");
097820b0
AD		 3593 }
3594
147dd882
WB		 3595 return $ruleset;
3596}
3597
ebf72e49
WB		 3598sub mac_to_linklocal {
3599 my ($macaddr) = @_;
3600 my @parts = split(/:/, $macaddr);
3601 # The standard link local address uses the fe80::/64 prefix with the
3602 # modified EUI-64 identifier derived from the MAC address by flipping the
3603 # universal/local bit and inserting FF:FE in the middle.
3604 # See RFC 4291.
3605 $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02);
3606 my @meui64 = (@parts[0,1,2], 'ff', 'fe', @parts[3,4,5]);
3607 return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]";
3608}
3609
147dd882
WB		 3610sub compile_ipsets {
3611 my ($cluster_conf, $vmfw_configs, $vmdata) = @_;
3612
3613 my $localnet;
3614 if ($cluster_conf->{aliases}->{local_network}) {
3615 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3616 } else {
3617 my $localnet_ver;
3618 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3619
3620 $cluster_conf->{aliases}->{local_network} = {
3621 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
3622 }
3623
3624 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3625
3626
3627 my $ipset_ruleset = {};
3628
3629 # generate ipsets for QEMU VMs
3630 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3631 eval {
3632 my $conf = $vmdata->{qemu}->{$vmid};
3633 my $vmfw_conf = $vmfw_configs->{$vmid};
3634 return if !$vmfw_conf;
3635
74601077
WB		 3636 # When the 'ipfilter' option is enabled every device for which there
3637 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3638 # ipset.
3639 # The reason is that ipfilter ipsets are always filled with standard
3640 # IPv6 link-local filters.
3641 my $ipsets = $vmfw_conf->{ipset};
3642 my $implicit_sets = {};
3643
ebf72e49
WB		 3644 my $device_ips = {};
3645 foreach my $netid (keys %$conf) {
3646 next if $netid !~ m/^net(\d+)$/;
3647 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3648 next if !$net->{firewall};
3649
74601077
WB		 3650 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3651 $implicit_sets->{"ipfilter-$netid"} = [];
3652 }
3653
ebf72e49
WB		 3654 my $macaddr = $net->{macaddr};
3655 my $linklocal = mac_to_linklocal($macaddr);
3656 $device_ips->{$netid} = [
3657 { cidr => $linklocal },
3658 { cidr => 'fe80::/10', nomatch => 1 }
3659 ];
3660 }
3661
74601077
WB		 3662 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3663 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
147dd882
WB		 3664 };
3665 warn $@ if $@; # just to be sure - should not happen
3666 }
3667
3668 # generate firewall rules for LXC containers
3669 foreach my $vmid (keys %{$vmdata->{lxc}}) {
aa229652
WB		 3670 eval {
3671 my $conf = $vmdata->{lxc}->{$vmid};
3672 my $vmfw_conf = $vmfw_configs->{$vmid};
3673 return if !$vmfw_conf;
147dd882 3674
74601077
WB		 3675 # When the 'ipfilter' option is enabled every device for which there
3676 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3677 # ipset.
3678 # The reason is that ipfilter ipsets are always filled with standard
383fe679
WB		 3679 # IPv6 link-local filters, as well as the IP addresses configured
3680 # for the container.
74601077
WB		 3681 my $ipsets = $vmfw_conf->{ipset};
3682 my $implicit_sets = {};
3683
ebf72e49
WB		 3684 my $device_ips = {};
3685 foreach my $netid (keys %$conf) {
3686 next if $netid !~ m/^net(\d+)$/;
a7c85d56 3687 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
ebf72e49
WB		 3688 next if !$net->{firewall};
3689
74601077
WB		 3690 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3691 $implicit_sets->{"ipfilter-$netid"} = [];
3692 }
3693
ebf72e49
WB		 3694 my $macaddr = $net->{hwaddr};
3695 my $linklocal = mac_to_linklocal($macaddr);
383fe679 3696 my $set = $device_ips->{$netid} = [
ebf72e49
WB		 3697 { cidr => $linklocal },
3698 { cidr => 'fe80::/10', nomatch => 1 }
3699 ];
37ef1ce1 3700 if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) {
383fe679
WB		 3701 push @$set, { cidr => $1 };
3702 }
37ef1ce1 3703 if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) {
383fe679
WB		 3704 push @$set, { cidr => $1 };
3705 }
ebf72e49
WB		 3706 }
3707
74601077
WB		 3708 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3709 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
aa229652
WB		 3710 };
3711 warn $@ if $@; # just to be sure - should not happen
147dd882
WB		 3712 }
3713
74601077 3714 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset});
27083984 3715
147dd882 3716 return $ipset_ruleset;
3fa83edf
DM		 3717}
3718
3719sub get_ruleset_status {
4bd0a9c4 3720 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 3721
3722 my $statushash = {};
3723
3724 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 3725 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 3726
3fa83edf
DM		 3727 $statushash->{$chain}->{sig} = $sig;
3728
3729 my $oldsig = $active_chains->{$chain};
3730 if (!defined($oldsig)) {
3731 $statushash->{$chain}->{action} = 'create';
3732 } else {
3733 if ($oldsig eq $sig) {
3734 $statushash->{$chain}->{action} = 'exists';
3735 } else {
3736 $statushash->{$chain}->{action} = 'update';
3737 }
3738 }
3739 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
3740 foreach my $cmd (@{$ruleset->{$chain}}) {
3741 print "\t$cmd\n" if $verbose;
3742 }
3743 }
3744
3745 foreach my $chain (sort keys %$active_chains) {
3746 if (!defined($ruleset->{$chain})) {
3747 my $sig = $active_chains->{$chain};
3748 $statushash->{$chain}->{action} = 'delete';
3749 $statushash->{$chain}->{sig} = $sig;
3750 print "delete $chain ($sig)\n" if $verbose;
3751 }
6158271d 3752 }
2a052ee3 3753
3fa83edf
DM		 3754 return $statushash;
3755}
3756
3fa83edf
DM		 3757sub print_sig_rule {
3758 my ($chain, $sig) = @_;
3759
09d5f68e
DM		 3760 # We just use this to store a SHA1 checksum used to detect changes
3761 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 3762}
3763
df7cb349 3764sub get_ruleset_cmdlist {
17da5c0f 3765 my ($ruleset, $verbose, $iptablescmd) = @_;
3fa83edf 3766
3fa83edf 3767 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 3768
17da5c0f 3769 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd);
4bd0a9c4 3770 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 3771
3772 # create missing chains first
3773 foreach my $chain (sort keys %$ruleset) {
3774 my $stat = $statushash->{$chain};
3775 die "internal error" if !$stat;
3776 next if $stat->{action} ne 'create';
886aba9c 3777
3fa83edf
DM		 3778 $cmdlist .= ":$chain - [0:0]\n";
3779 }
3780
4bd0a9c4 3781 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
55fad3b7
DM		 3782 my $chain = "PVEFW-$h";
3783 if ($ruleset->{$chain} && !$hooks->{$h}) {
3784 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 3785 }
3fa83edf
DM		 3786 }
3787
3788 foreach my $chain (sort keys %$ruleset) {
3789 my $stat = $statushash->{$chain};
3790 die "internal error" if !$stat;
3791
3792 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
3793 $cmdlist .= "-F $chain\n";
3794 foreach my $cmd (@{$ruleset->{$chain}}) {
3795 $cmdlist .= "$cmd\n";
3796 }
3797 $cmdlist .= print_sig_rule($chain, $stat->{sig});
3798 } elsif ($stat->{action} eq 'delete') {
f5d28682 3799 die "internal error"; # this should not happen
3fa83edf
DM		 3800 } elsif ($stat->{action} eq 'exists') {
3801 # do nothing
3802 } else {
3803 die "internal error - unknown status '$stat->{action}'";
3804 }
3805 }
3806
f5d28682
DM		 3807 foreach my $chain (keys %$statushash) {
3808 next if $statushash->{$chain}->{action} ne 'delete';
3809 $cmdlist .= "-F $chain\n";
3810 }
3811 foreach my $chain (keys %$statushash) {
3812 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 3813 next if $chain eq 'PVEFW-INPUT';
3814 next if $chain eq 'PVEFW-OUTPUT';
3815 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 3816 $cmdlist .= "-X $chain\n";
3817 }
3818
3f95d14a 3819 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 3820
3fa83edf
DM		 3821 $cmdlist .= "COMMIT\n";
3822
3f95d14a 3823 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 3824}
3825
34cdedfa 3826sub get_ipset_cmdlist {
dd7a13fd 3827 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 3828
3829 my $cmdlist = "";
3830
dd7a13fd
DM		 3831 my $delete_cmdlist = "";
3832
4bd0a9c4
DM		 3833 my $active_chains = ipset_get_chains();
3834 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 3835
e34d0e58 3836 # remove stale _swap chains
30f1b100
DM		 3837 foreach my $chain (keys %$active_chains) {
3838 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3839 $cmdlist .= "destroy $chain\n";
3840 }
3841 }
3842
c69cf614 3843 foreach my $chain (keys %$ruleset) {
c69cf614
DM		 3844 my $stat = $statushash->{$chain};
3845 die "internal error" if !$stat;
3846
3847 if ($stat->{action} eq 'create') {
3848 foreach my $cmd (@{$ruleset->{$chain}}) {
3849 $cmdlist .= "$cmd\n";
3850 }
3851 }
3852 }
3853
3854 foreach my $chain (keys %$ruleset) {
6d959e3f
DM		 3855 my $stat = $statushash->{$chain};
3856 die "internal error" if !$stat;
34cdedfa 3857
dd7a13fd
DM		 3858 if ($stat->{action} eq 'update') {
3859 my $chain_swap = $chain."_swap";
cbb5d6f3 3860
dd7a13fd
DM		 3861 foreach my $cmd (@{$ruleset->{$chain}}) {
3862 $cmd =~ s/$chain/$chain_swap/;
3863 $cmdlist .= "$cmd\n";
34cdedfa 3864 }
dd7a13fd
DM		 3865 $cmdlist .= "swap $chain_swap $chain\n";
3866 $cmdlist .= "flush $chain_swap\n";
3867 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 3868 }
dd7a13fd 3869 }
3f95d14a 3870
88c26d5e 3871 # the remove unused chains
c69cf614 3872 foreach my $chain (keys %$statushash) {
dd7a13fd 3873 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 3874
dd7a13fd
DM		 3875 $delete_cmdlist .= "flush $chain\n";
3876 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 3877 }
3878
dd7a13fd 3879 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 3880
dd7a13fd 3881 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 3882}
3883
6b9f68a2 3884sub apply_ruleset {
17da5c0f 3885 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $verbose) = @_;
6b9f68a2
DM		 3886
3887 enable_bridge_firewall();
3888
cbb5d6f3 3889 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
9a462317 3890 get_ipset_cmdlist($ipset_ruleset, $verbose);
6b9f68a2 3891
81a0bf43 3892 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
17da5c0f 3893 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables");
2a052ee3 3894
81a0bf43
DM		 3895 if ($verbose) {
3896 if ($ipset_changes) {
3897 print "ipset changes:\n";
3898 print $ipset_create_cmdlist if $ipset_create_cmdlist;
3899 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
3900 }
3f95d14a 3901
81a0bf43
DM		 3902 if ($changes) {
3903 print "iptables changes:\n";
3904 print $cmdlist;
3905 }
17da5c0f
AD		 3906
3907 if ($changesv6) {
3908 print "ip6tables changes:\n";
3909 print $cmdlistv6;
3910 }
81a0bf43 3911 }
3fa83edf 3912
259db1e6
DM		 3913 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
3914 PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || '');
3915
2a052ee3 3916 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 3917
259db1e6
DM		 3918 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
3919 PVE::Tools::file_set_contents($tmpfile, $cmdlist || '');
3920
3fa83edf 3921 iptables_restore_cmdlist($cmdlist);
259db1e6
DM		 3922
3923 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
3924 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
3925
17da5c0f 3926 ip6tables_restore_cmdlist($cmdlistv6);
3fa83edf 3927
259db1e6
DM		 3928 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
3929 PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
3930
dd7a13fd 3931 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 3932
6158271d 3933 # test: re-read status and check if everything is up to date
4bd0a9c4 3934 my $active_chains = iptables_get_chains();
81a0bf43 3935 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 3936
3937 my $errors;
3938 foreach my $chain (sort keys %$ruleset) {
3939 my $stat = $statushash->{$chain};
3940 if ($stat->{action} ne 'exists') {
3941 warn "unable to update chain '$chain'\n";
3942 $errors = 1;
3943 }
3944 }
b6360c3f 3945
17da5c0f
AD		 3946 my $active_chainsv6 = iptables_get_chains("ip6tables");
3947 my $statushashv6 = get_ruleset_status($rulesetv6, $active_chainsv6, \&iptables_chain_digest, 0);
3948
3949 foreach my $chain (sort keys %$rulesetv6) {
3950 my $stat = $statushashv6->{$chain};
3951 if ($stat->{action} ne 'exists') {
3952 warn "unable to update chain '$chain'\n";
3953 $errors = 1;
3954 }
3955 }
3956
3fa83edf 3957 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 3958
3959 update_nf_conntrack_max($hostfw_conf);
3960
3961 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
3962
b6360c3f
DM		 3963}
3964
490cdead
DM		 3965sub update_nf_conntrack_max {
3966 my ($hostfw_conf) = @_;
3967
3968 my $max = 65536; # reasonable default
3969
3970 my $options = $hostfw_conf->{options} || {};
3971
3972 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
3973 $max = $options->{nf_conntrack_max};
3974 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
3975 }
3976
3977 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
3978 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
3979
3980 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
3981
3982 if ($current != $max) {
3983 my $hashsize = int($max/4);
3984 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
3985 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
3986 }
3987}
3988
28c082a1
AD		 3989sub update_nf_conntrack_tcp_timeout_established {
3990 my ($hostfw_conf) = @_;
3991
3992 my $options = $hostfw_conf->{options} || {};
3993
3994 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
3995
3996 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3997}
3998
c4a2e5ae
DM		 3999sub remove_pvefw_chains {
4000
7b7b2654
AD		 4001 PVE::Firewall::remove_pvefw_chains_iptables("iptables");
4002 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
4003 PVE::Firewall::remove_pvefw_chains_ipset();
4004
4005}
4006
4007sub remove_pvefw_chains_iptables {
4008 my ($iptablescmd) = @_;
4009
4010 my ($chash, $hooks) = iptables_get_chains($iptablescmd);
c4a2e5ae
DM		 4011 my $cmdlist = "*filter\n";
4012
4013 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
4014 if ($hooks->{$h}) {
4015 $cmdlist .= "-D $h -j PVEFW-$h\n";
4016 }
4017 }
cbb5d6f3 4018
c4a2e5ae
DM		 4019 foreach my $chain (keys %$chash) {
4020 $cmdlist .= "-F $chain\n";
4021 }
4022
4023 foreach my $chain (keys %$chash) {
4024 $cmdlist .= "-X $chain\n";
4025 }
4026 $cmdlist .= "COMMIT\n";
4027
7b7b2654
AD		 4028 if($iptablescmd eq "ip6tables") {
4029 ip6tables_restore_cmdlist($cmdlist);
4030 } else {
4031 iptables_restore_cmdlist($cmdlist);
4032 }
4033}
4034
4035sub remove_pvefw_chains_ipset {
55fad3b7
DM		 4036
4037 my $ipset_chains = ipset_get_chains();
4038
7b7b2654 4039 my $cmdlist = "";
55fad3b7
DM		 4040
4041 foreach my $chain (keys %$ipset_chains) {
88c26d5e
DM		 4042 $cmdlist .= "flush $chain\n";
4043 $cmdlist .= "destroy $chain\n";
55fad3b7
DM		 4044 }
4045
7b7b2654 4046 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 4047}
4048
8b453a09
DM		 4049sub init {
4050 my $cluster_conf = load_clusterfw_conf();
4051 my $cluster_options = $cluster_conf->{options};
4052 my $enable = $cluster_options->{enable};
4053
4054 return if !$enable;
4055
4056 # load required modules here
4057}
4058
6b9f68a2 4059sub update {
6b9f68a2 4060 my $code = sub {
3dfa8a7f
DM		 4061
4062 my $cluster_conf = load_clusterfw_conf();
4063 my $cluster_options = $cluster_conf->{options};
4064
55fad3b7 4065 if (!$cluster_options->{enable}) {
b22130d3 4066 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 4067 return;
4068 }
4069
50f9a28d 4070 my $hostfw_conf = load_hostfw_conf($cluster_conf);
3dfa8a7f 4071
638c755a 4072 my ($ruleset, $ipset_ruleset, $rulesetv6) = compile($cluster_conf, $hostfw_conf);
490cdead 4073
17da5c0f 4074 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6);
6b9f68a2
DM		 4075 };
4076
4077 run_locked($code);
4078}
4079
b6360c3f 40801;
Firewall test scripts