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fix Razor macro
[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",
056f9211 426 { action => 'PARAM', proto => 'tcp', dport => '2703' },
857f62c8
DM		 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*$/);
862
d50f24ea 863 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp|sctp).*$!) {
fcba0beb 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 $etc_services;
877}
878
58bc569d
WB		 879sub parse_protocol_file {
880 my ($filename) = @_;
fcba0beb
DM		 881
882 my $fh = IO::File->new($filename, O_RDONLY);
883 if (!$fh) {
884 warn "unable to read '$filename' - $!\n";
885 return {};
886 }
887
888 my $protocols = {};
889
890 while (my $line = <$fh>) {
891 chomp ($line);
892 next if $line =~m/^#/;
893 next if ($line =~m/^\s*$/);
894
d6dd6e96 895 if ($line =~ m!^(\S+)\s+(\d+)(?:\s+.*)?$!) {
fcba0beb
DM		 896 $protocols->{byid}->{$2}->{name} = $1;
897 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
898 }
899 }
900
901 close($fh);
902
58bc569d
WB		 903 return $protocols;
904}
905
906my $etc_protocols;
907
908sub get_etc_protocols {
909 return $etc_protocols if $etc_protocols;
910
911 my $protocols = parse_protocol_file('/etc/protocols');
912
041b9277
DM		 913 # add special case for ICMP v6
914 $protocols->{byid}->{icmpv6}->{name} = "icmpv6";
915 $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6};
916
fcba0beb
DM		 917 $etc_protocols = $protocols;
918
919 return $etc_protocols;
920}
921
b452ea10
WB		 922my $etc_ethertypes;
923
924sub get_etc_ethertypes {
925 $etc_ethertypes = parse_protocol_file('/etc/ethertypes')
926 if !$etc_ethertypes;
927 return $etc_ethertypes;
928}
929
525778d7 930my $__local_network;
93be4333 931
525778d7 932sub local_network {
ac633d30 933 my ($new_value) = @_;
93be4333 934
525778d7 935 $__local_network = $new_value if defined($new_value);
ac633d30 936
525778d7 937 return $__local_network if defined($__local_network);
93be4333
DM		 938
939 eval {
940 my $nodename = PVE::INotify::nodename();
941
942 my $ip = PVE::Cluster::remote_node_ip($nodename);
943
944 my $testip = Net::IP->new($ip);
bfc488f6 945
5dc356af
WB		 946 my $isv6 = $testip->version == 6;
947 my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route()
948 : PVE::ProcFSTools::read_proc_net_route();
93be4333 949 foreach my $entry (@$routes) {
5dc356af
WB		 950 my $mask;
951 if ($isv6) {
952 $mask = $entry->{prefix};
15c80000 953 next if !$mask; # skip the default route...
5dc356af 954 } else {
2e1ae6b9 955 $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}};
5dc356af
WB		 956 next if !defined($mask);
957 }
93be4333
DM		 958 my $cidr = "$entry->{dest}/$mask";
959 my $testnet = Net::IP->new($cidr);
15c80000
WB		 960 my $overlap = $testnet->overlaps($testip);
961 if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP ||
962 $overlap == $Net::IP::IP_IDENTICAL)
963 {
525778d7 964 $__local_network = $cidr;
93be4333
DM		 965 return;
966 }
967 }
968 };
969 warn $@ if $@;
970
525778d7 971 return $__local_network;
93be4333
DM		 972}
973
6d959e3f
DM		 974# ipset names are limited to 31 characters,
975# and we use '-v4' or '-v6' to indicate IP versions,
976# and we use '_swap' suffix for atomic update,
977# for example PVEFW-${VMID}-${ipset_name}_swap
30150dca 978
88c26d5e 979my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
708ba714
DM		 980
981sub compute_ipset_chain_name {
88c26d5e 982 my ($vmid, $ipset_name, $ipversion) = @_;
708ba714
DM		 983
984 $vmid = 0 if !defined($vmid);
985
88c26d5e 986 my $id = "$vmid-${ipset_name}-v$ipversion";
708ba714 987
88c26d5e 988 if (length($id) > $max_iptables_ipset_name_length) {
708ba714
DM		 989 $id = PVE::Tools::fnv31a_hex($id);
990 }
991
992 return "PVEFW-$id";
993}
994
b692f42c
DM		 995sub compute_ipfilter_ipset_name {
996 my ($iface) = @_;
997
998 return "ipfilter-$iface";
999}
1000
ecbea048
DM		 1001sub parse_address_list {
1002 my ($str) = @_;
1003
e2c62733
DM		 1004 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
1005 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
1006 return;
1007 }
1008
1009 if ($str =~ m/^${ip_alias_pattern}$/) {
1010 die "alias name too long\n" if length($str) > $max_alias_name_length;
1011 return;
1012 }
d72beb8e 1013
3162af6b
DM		 1014 my $count = 0;
1015 my $iprange = 0;
a589b6ac 1016 my $ipversion;
7697c041 1017
55b47371
WB		 1018 my @elements = split(/,/, $str);
1019 die "extraneous commas in list\n" if $str ne join(',', @elements);
1020 foreach my $elem (@elements) {
3162af6b 1021 $count++;
c344e509
DM		 1022 my $ip = Net::IP->new($elem);
1023 if (!$ip) {
ecbea048
DM		 1024 my $err = Net::IP::Error();
1025 die "invalid IP address: $err\n";
1026 }
3162af6b 1027 $iprange = 1 if $elem =~ m/-/;
a589b6ac 1028
c344e509 1029 my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4;
a589b6ac
DM		 1030
1031 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
006490cb 1032 if $ipversion && ($new_ipversion != $ipversion);
a589b6ac
DM		 1033
1034 $ipversion = $new_ipversion;
ecbea048 1035 }
e34d0e58 1036
5163367b 1037 die "you can't use a range in a list\n" if $iprange && $count > 1;
a589b6ac 1038
7697c041 1039 return $ipversion;
ecbea048 1040}
dddd9413 1041
fcba0beb 1042sub parse_port_name_number_or_range {
a1c04f71 1043 my ($str, $dport) = @_;
fcba0beb
DM		 1044
1045 my $services = PVE::Firewall::get_etc_services();
7ca36671 1046 my $count = 0;
041b7e8e
DM		 1047 my $icmp_port = 0;
1048
55b47371
WB		 1049 my @elements = split(/,/, $str);
1050 die "extraneous commas in list\n" if $str ne join(',', @elements);
1051 foreach my $item (@elements) {
aced7e7d 1052 if ($item =~ m/^([0-9]+):([0-9]+)$/) {
6a241ca7 1053 $count += 2;
7ca36671
DM		 1054 my ($port1, $port2) = ($1, $2);
1055 die "invalid port '$port1'\n" if $port1 > 65535;
1056 die "invalid port '$port2'\n" if $port2 > 65535;
12be0dfe 1057 die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2;
aced7e7d 1058 } elsif ($item =~ m/^([0-9]+)$/) {
6a241ca7 1059 $count += 1;
7ca36671
DM		 1060 my $port = $1;
1061 die "invalid port '$port'\n" if $port > 65535;
1062 } else {
a1c04f71 1063 if ($dport && $icmp_type_names->{$item}) {
041b7e8e 1064 $icmp_port = 1;
a1c04f71 1065 } elsif ($dport && $icmpv6_type_names->{$item}) {
041b9277 1066 $icmp_port = 1;
041b7e8e 1067 } else {
e34d0e58 1068 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 1069 }
fcba0beb
DM		 1070 }
1071 }
1072
6a241ca7
WB		 1073 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 0;
1074
1075 # I really don't like to use the word number here, but it's the only thing
1076 # that makes sense in a literal way. The range 1:100 counts as 2, not as
1077 # one and not as 100...
1078 die "too many entries in port list (> 15 numbers)\n"
1079 if $count > 15;
041b7e8e 1080
f776d6de 1081 return (scalar(@elements) > 1);
fcba0beb
DM		 1082}
1083
a1c04f71
WB		 1084PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec);
1085sub pve_fw_verify_sport_spec {
1086 my ($portstr) = @_;
1087
1088 parse_port_name_number_or_range($portstr, 0);
1089
1090 return $portstr;
1091}
1092
1093PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec);
1094sub pve_fw_verify_dport_spec {
54cd19a8
DM		 1095 my ($portstr) = @_;
1096
a1c04f71 1097 parse_port_name_number_or_range($portstr, 1);
54cd19a8
DM		 1098
1099 return $portstr;
1100}
1101
d31689ee
DM		 1102PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
1103sub pve_fw_verify_addr_spec {
54cd19a8
DM		 1104 my ($list) = @_;
1105
1106 parse_address_list($list);
1107
1108 return $list;
1109}
1110
1111PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
1112sub pve_fw_verify_protocol_spec {
1113 my ($proto) = @_;
1114
1115 my $protocols = get_etc_protocols();
1116
1117 die "unknown protocol '$proto'\n" if $proto &&
1118 !(defined($protocols->{byname}->{$proto}) ||
1119 defined($protocols->{byid}->{$proto}));
1120
1121 return $proto;
1122}
1123
1124
d1c53b3e 1125# helper function for API
d1c53b3e 1126
5d38d64f
DM		 1127sub copy_opject_with_digest {
1128 my ($object) = @_;
1129
1130 my $sha = Digest::SHA->new('sha1');
1131
1132 my $res = {};
1133 foreach my $k (sort keys %$object) {
1134 my $v = $object->{$k};
0365eb68 1135 next if !defined($v);
5d38d64f
DM		 1136 $res->{$k} = $v;
1137 $sha->add($k, ':', $v, "\n");
1138 }
1139
55e686c7 1140 my $digest = $sha->hexdigest;
5d38d64f
DM		 1141
1142 $res->{digest} = $digest;
1143
1144 return wantarray ? ($res, $digest) : $res;
1145}
1146
1147sub copy_list_with_digest {
1148 my ($list) = @_;
1149
1150 my $sha = Digest::SHA->new('sha1');
1151
1152 my $res = [];
1153 foreach my $entry (@$list) {
1154 my $data = {};
1155 foreach my $k (sort keys %$entry) {
1156 my $v = $entry->{$k};
0365eb68 1157 next if !defined($v);
5d38d64f 1158 $data->{$k} = $v;
6d9246e7 1159 # Note: digest ignores refs ($rule->{errors})
e83f0d00
DC		 1160 # since Digest::SHA expects a series of bytes,
1161 # we have to encode the value here to prevent errors when
1162 # using utf8 characters (eg. in comments)
1163 $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ;
5d38d64f
DM		 1164 }
1165 push @$res, $data;
1166 }
1167
55e686c7 1168 my $digest = $sha->hexdigest;
5d38d64f
DM		 1169
1170 foreach my $entry (@$res) {
1171 $entry->{digest} = $digest;
1172 }
1173
1174 return wantarray ? ($res, $digest) : $res;
1175}
1176
e313afe0
DM		 1177our $cluster_option_properties = {
1178 enable => {
1179 description => "Enable or disable the firewall cluster wide.",
1180 type => 'integer',
1181 minimum => 0,
1182 optional => 1,
1183 },
2549e7ef
SI		 1184 ebtables => {
1185 description => "Enable ebtables rules cluster wide.",
1186 type => 'boolean',
1187 default => 1,
1188 optional => 1,
1189 },
e313afe0
DM		 1190 policy_in => {
1191 description => "Input policy.",
1192 type => 'string',
1193 optional => 1,
1194 enum => ['ACCEPT', 'REJECT', 'DROP'],
1195 },
1196 policy_out => {
1197 description => "Output policy.",
1198 type => 'string',
1199 optional => 1,
1200 enum => ['ACCEPT', 'REJECT', 'DROP'],
1201 },
1202};
1203
1204our $host_option_properties = {
1205 enable => {
1206 description => "Enable host firewall rules.",
1207 type => 'boolean',
1208 optional => 1,
1209 },
1210 log_level_in => get_standard_option('pve-fw-loglevel', {
1211 description => "Log level for incoming traffic." }),
1212 log_level_out => get_standard_option('pve-fw-loglevel', {
1213 description => "Log level for outgoing traffic." }),
1214 tcp_flags_log_level => get_standard_option('pve-fw-loglevel', {
1215 description => "Log level for illegal tcp flags filter." }),
1216 smurf_log_level => get_standard_option('pve-fw-loglevel', {
1217 description => "Log level for SMURFS filter." }),
1218 nosmurfs => {
1219 description => "Enable SMURFS filter.",
1220 type => 'boolean',
1221 optional => 1,
1222 },
1223 tcpflags => {
1224 description => "Filter illegal combinations of TCP flags.",
1225 type => 'boolean',
1226 optional => 1,
1227 },
1228 nf_conntrack_max => {
1229 description => "Maximum number of tracked connections.",
1230 type => 'integer',
1231 optional => 1,
1232 minimum => 32768,
1233 },
1234 nf_conntrack_tcp_timeout_established => {
1235 description => "Conntrack established timeout.",
1236 type => 'integer',
1237 optional => 1,
1238 minimum => 7875,
1239 },
1240 ndp => {
1241 description => "Enable NDP.",
1242 type => 'boolean',
1243 optional => 1,
1244 },
27c49e25
CE		 1245 nf_conntrack_allow_invalid => {
1246 description => "Allow invalid packets on connection tracking.",
1247 type => 'boolean',
1248 default => 0,
1249 optional => 1,
1250 },
e17d3eec
ML		 1251 log_nf_conntrack => {
1252 description => "Enable logging of conntrack information.",
1253 type => 'boolean',
1254 default => 0,
1255 optional => 1
1256 },
e313afe0
DM		 1257};
1258
1259our $vm_option_properties = {
1260 enable => {
1261 description => "Enable/disable firewall rules.",
1262 type => 'boolean',
1263 optional => 1,
1264 },
1265 macfilter => {
1266 description => "Enable/disable MAC address filter.",
1267 type => 'boolean',
1268 optional => 1,
1269 },
1270 dhcp => {
1271 description => "Enable DHCP.",
1272 type => 'boolean',
1273 optional => 1,
1274 },
1275 ndp => {
1276 description => "Enable NDP.",
1277 type => 'boolean',
1278 optional => 1,
1279 },
1280 radv => {
1281 description => "Allow sending Router Advertisement.",
1282 type => 'boolean',
1283 optional => 1,
1284 },
1285 ipfilter => {
1286 description => "Enable default IP filters. " .
1287 "This is equivalent to adding an empty ipfilter-net<id> ipset " .
1288 "for every interface. Such ipsets implicitly contain sane default " .
1289 "restrictions such as restricting IPv6 link local addresses to " .
1290 "the one derived from the interface's MAC address. For containers " .
1291 "the configured IP addresses will be implicitly added.",
1292 type => 'boolean',
1293 optional => 1,
1294 },
1295 policy_in => {
1296 description => "Input policy.",
1297 type => 'string',
1298 optional => 1,
1299 enum => ['ACCEPT', 'REJECT', 'DROP'],
1300 },
1301 policy_out => {
1302 description => "Output policy.",
1303 type => 'string',
1304 optional => 1,
1305 enum => ['ACCEPT', 'REJECT', 'DROP'],
1306 },
1307 log_level_in => get_standard_option('pve-fw-loglevel', {
1308 description => "Log level for incoming traffic." }),
1309 log_level_out => get_standard_option('pve-fw-loglevel', {
1310 description => "Log level for outgoing traffic." }),
1311
1312};
1313
fb060a52 1314
7a332151 1315my $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 1316
7a332151 1317my $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 1318
9c7e0858
DM		 1319my $rule_properties = {
1320 pos => {
1321 description => "Update rule at position <pos>.",
1322 type => 'integer',
1323 minimum => 0,
1324 optional => 1,
1325 },
c71e785f 1326 digest => get_standard_option('pve-config-digest'),
9c7e0858 1327 type => {
e50429af 1328 description => "Rule type.",
9c7e0858
DM		 1329 type => 'string',
1330 optional => 1,
1331 enum => ['in', 'out', 'group'],
1332 },
1333 action => {
c14dacdf 1334 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 1335 type => 'string',
1336 optional => 1,
44be8ceb 1337 pattern => $security_group_name_pattern,
c14dacdf
DM		 1338 maxLength => 20,
1339 minLength => 2,
9c7e0858 1340 },
e5076eee 1341 macro => {
e50429af 1342 description => "Use predefined standard macro.",
e5076eee
DM		 1343 type => 'string',
1344 optional => 1,
54cd19a8 1345 maxLength => 128,
e5076eee 1346 },
fb060a52 1347 iface => get_standard_option('pve-iface', {
7ccaa5f1 1348 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		 1349 optional => 1
1350 }),
9c7e0858 1351 source => {
fb060a52 1352 description => "Restrict packet source address. $addr_list_descr",
d31689ee 1353 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1354 optional => 1,
1355 },
1356 dest => {
fb060a52 1357 description => "Restrict packet destination address. $addr_list_descr",
d31689ee 1358 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1359 optional => 1,
1360 },
1361 proto => {
fb060a52 1362 description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.",
54cd19a8 1363 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 1364 optional => 1,
1365 },
1366 enable => {
e50429af 1367 description => "Flag to enable/disable a rule.",
72d055fc
AG		 1368 type => 'integer',
1369 minimum => 0,
9c7e0858
DM		 1370 optional => 1,
1371 },
3489f8a2
CE		 1372 log => get_standard_option('pve-fw-loglevel', {
1373 description => "Log level for firewall rule.",
1374 }),
9c7e0858 1375 sport => {
fb060a52 1376 description => "Restrict TCP/UDP source port. $port_descr",
a1c04f71 1377 type => 'string', format => 'pve-fw-sport-spec',
9c7e0858
DM		 1378 optional => 1,
1379 },
1380 dport => {
fb060a52 1381 description => "Restrict TCP/UDP destination port. $port_descr",
a1c04f71 1382 type => 'string', format => 'pve-fw-dport-spec',
9c7e0858
DM		 1383 optional => 1,
1384 },
1385 comment => {
e50429af 1386 description => "Descriptive comment.",
9c7e0858
DM		 1387 type => 'string',
1388 optional => 1,
1389 },
1390};
1391
1392sub add_rule_properties {
1393 my ($properties) = @_;
1394
1395 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 1396 my $h = $rule_properties->{$k};
1397 # copy data, so that we can modify later without side effects
1398 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 1399 }
cbb5d6f3 1400
9c7e0858
DM		 1401 return $properties;
1402}
1403
5b7974df
DM		 1404sub delete_rule_properties {
1405 my ($rule, $delete_str) = @_;
e34d0e58 1406
5b7974df
DM		 1407 foreach my $opt (PVE::Tools::split_list($delete_str)) {
1408 raise_param_exc({ 'delete' => "no such property ('$opt')"})
1409 if !defined($rule_properties->{$opt});
1410 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
1411 if $opt eq 'type' || $opt eq 'action';
1412 delete $rule->{$opt};
1413 }
1414
1415 return $rule;
1416}
1417
9a2745a0 1418my $apply_macro = sub {
35d1d6da 1419 my ($macro_name, $param, $verify, $ipversion) = @_;
9a2745a0
DM		 1420
1421 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1422 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1423
35d1d6da
DM		 1424 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1425 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1426 }
1427
21a18e53 1428 # skip macros which are specific to another ipversion
ff5d050e
AG		 1429 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1430 return if $ipversion != $required;
1431 }
21a18e53 1432
9a2745a0
DM		 1433 my $rules = [];
1434
1435 foreach my $templ (@$macro_rules) {
1436 my $rule = {};
1437 my $param_used = {};
1438 foreach my $k (keys %$templ) {
1439 my $v = $templ->{$k};
1440 if ($v eq 'PARAM') {
1441 $v = $param->{$k};
1442 $param_used->{$k} = 1;
1443 } elsif ($v eq 'DEST') {
1444 $v = $param->{dest};
1445 $param_used->{dest} = 1;
1446 } elsif ($v eq 'SOURCE') {
1447 $v = $param->{source};
1448 $param_used->{source} = 1;
1449 }
1450
1451 if (!defined($v)) {
1452 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1453 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1454 die "$msg\n";
1455 }
1456 $rule->{$k} = $v;
1457 }
1458 foreach my $k (keys %$param) {
1459 next if $k eq 'macro';
1460 next if !defined($param->{$k});
1461 next if $param_used->{$k};
1462 if (defined($rule->{$k})) {
1463 if ($rule->{$k} ne $param->{$k}) {
1464 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1465 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1466 die "$msg\n";
1467 }
1468 } else {
1469 $rule->{$k} = $param->{$k};
1470 }
1471 }
1472 push @$rules, $rule;
1473 }
1474
1475 return $rules;
1476};
1477
b6b8e6ad
DM		 1478my $rule_env_iface_lookup = {
1479 'ct' => 1,
1480 'vm' => 1,
1481 'group' => 0,
1482 'cluster' => 1,
1483 'host' => 1,
1484};
1485
7ca36671 1486sub verify_rule {
a523e057 1487 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1488
1489 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1490
b6b8e6ad
DM		 1491 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1492 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1493
a523e057
DM		 1494 my $errors = $rule->{errors} || {};
1495
6d9246e7 1496 my $error_count = 0;
7ca36671 1497
6d9246e7
DM		 1498 my $add_error = sub {
1499 my ($param, $msg) = @_;
d4cda423 1500 chomp $msg;
6d9246e7
DM		 1501 raise_param_exc({ $param => $msg }) if !$noerr;
1502 $error_count++;
1503 $errors->{$param} = $msg if !$errors->{$param};
1504 };
1505
eea9d2a1
DM		 1506 my $ipversion;
1507 my $set_ip_version = sub {
1508 my $vers = shift;
1509 if ($vers) {
1510 die "detected mixed ipv4/ipv6 adresses in rule\n"
1511 if $ipversion && ($vers != $ipversion);
1512 $ipversion = $vers;
1513 }
1514 };
1515
a523e057 1516 my $check_ipset_or_alias_property = sub {
ae029a88 1517 my ($name, $expected_ipversion) = @_;
a523e057
DM		 1518
1519 if (my $value = $rule->{$name}) {
1520 if ($value =~ m/^\+/) {
4dfe04e6 1521 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1522 &$add_error($name, "no such ipset '$1'")
a523e057 1523 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1524
a523e057 1525 } else {
351052d1 1526 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1527 }
1528 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1529 my $alias = lc($value);
bfc488f6 1530 &$add_error($name, "no such alias '$value'")
70e524eb 1531 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
04f5088f 1532 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
70e524eb
AD		 1533 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1534
eea9d2a1 1535 &$set_ip_version($e->{ipversion});
a523e057
DM		 1536 }
1537 }
1538 };
1539
6d9246e7
DM		 1540 my $type = $rule->{type};
1541 my $action = $rule->{action};
bfc488f6 1542
6d9246e7
DM		 1543 &$add_error('type', "missing property") if !$type;
1544 &$add_error('action', "missing property") if !$action;
1545
1546 if ($type) {
1547 if ($type eq 'in' || $type eq 'out') {
1548 &$add_error('action', "unknown action '$action'")
1549 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1550 } elsif ($type eq 'group') {
1551 &$add_error('type', "security groups not allowed")
1552 if !$allow_groups;
1553 &$add_error('action', "invalid characters in security group name")
1554 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1555 } else {
1556 &$add_error('type', "unknown rule type '$type'");
1557 }
7ca36671 1558 }
e34d0e58 1559
dba740a9 1560 if ($rule->{iface}) {
bfc488f6 1561 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1562 if !$allow_iface;
dba740a9 1563 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1564 &$add_error('iface', $@) if $@;
fdefeeab 1565 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
b6b8e6ad
DM		 1566 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1567 if $rule->{iface} !~ m/^net(\d+)$/;
b6b8e6ad
DM		 1568 }
1569 }
7ca36671
DM		 1570
1571 if ($rule->{macro}) {
6d9246e7
DM		 1572 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1573 $rule->{macro} = $preferred_name;
1574 } else {
1575 &$add_error('macro', "unknown macro '$rule->{macro}'");
1576 }
1577 }
1578
1579 if ($rule->{proto}) {
1580 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1581 &$add_error('proto', $@) if $@;
041b9277
DM		 1582 &$set_ip_version(4) if $rule->{proto} eq 'icmp';
1583 &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
6d9246e7 1584 }
7ca36671
DM		 1585
1586 if ($rule->{dport}) {
a1c04f71 1587 eval { parse_port_name_number_or_range($rule->{dport}, 1); };
6d9246e7 1588 &$add_error('dport', $@) if $@;
48e3963e 1589 my $proto = $rule->{proto};
6d9246e7 1590 &$add_error('proto', "missing property - 'dport' requires this property")
48e3963e
WB		 1591 if !$proto;
1592 &$add_error('dport', "protocol '$proto' does not support ports")
1593 if !$PROTOCOLS_WITH_PORTS->{$proto} &&
1594 $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
6d9246e7 1595 }
7ca36671
DM		 1596
1597 if ($rule->{sport}) {
a1c04f71 1598 eval { parse_port_name_number_or_range($rule->{sport}, 0); };
6d9246e7 1599 &$add_error('sport', $@) if $@;
48e3963e 1600 my $proto = $rule->{proto};
6d9246e7 1601 &$add_error('proto', "missing property - 'sport' requires this property")
48e3963e
WB		 1602 if !$proto;
1603 &$add_error('sport', "protocol '$proto' does not support ports")
1604 if !$PROTOCOLS_WITH_PORTS->{$proto};
7ca36671
DM		 1605 }
1606
1607 if ($rule->{source}) {
041b9277
DM		 1608 eval {
1609 my $source_ipversion = parse_address_list($rule->{source});
1610 &$set_ip_version($source_ipversion);
1611 };
6d9246e7 1612 &$add_error('source', $@) if $@;
ae029a88 1613 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM		 1614 }
1615
1616 if ($rule->{dest}) {
9e2205e5
DM		 1617 eval {
1618 my $dest_ipversion = parse_address_list($rule->{dest});
041b9277 1619 &$set_ip_version($dest_ipversion);
9e2205e5 1620 };
6d9246e7 1621 &$add_error('dest', $@) if $@;
ae029a88 1622 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM		 1623 }
1624
35d1d6da
DM		 1625 $rule->{ipversion} = $ipversion if $ipversion;
1626
a523e057 1627 if ($rule->{macro} && !$error_count) {
35d1d6da 1628 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
6d9246e7
DM		 1629 if (my $err = $@) {
1630 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1631 my $eh = $err->{errors};
1632 foreach my $p (keys %$eh) {
1633 &$add_error($p, $eh->{$p});
1634 }
1635 } else {
1636 &$add_error('macro', "$err");
1637 }
1638 }
9a2745a0
DM		 1639 }
1640
6d9246e7
DM		 1641 $rule->{errors} = $errors if $error_count;
1642
7ca36671
DM		 1643 return $rule;
1644}
1645
9c7e0858
DM		 1646sub copy_rule_data {
1647 my ($rule, $param) = @_;
1648
1649 foreach my $k (keys %$rule_properties) {
1650 if (defined(my $v = $param->{$k})) {
1651 if ($v eq '' || $v eq '-') {
1652 delete $rule->{$k};
1653 } else {
1654 $rule->{$k} = $v;
1655 }
9c7e0858
DM		 1656 }
1657 }
7ca36671 1658
9c7e0858
DM		 1659 return $rule;
1660}
1661
9f6845cf
DM		 1662sub rules_modify_permissions {
1663 my ($rule_env) = @_;
1664
1665 if ($rule_env eq 'host') {
1666 return {
1667 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1668 };
1669 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1670 return {
1671 check => ['perm', '/', [ 'Sys.Modify' ]],
1672 };
3b4882dc 1673 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1674 return {
1675 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1676 }
1677 }
1678
1679 return undef;
1680}
1681
1682sub rules_audit_permissions {
1683 my ($rule_env) = @_;
1684
1685 if ($rule_env eq 'host') {
1686 return {
1687 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1688 };
1689 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1690 return {
1691 check => ['perm', '/', [ 'Sys.Audit' ]],
1692 };
3b4882dc 1693 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1694 return {
1695 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1696 }
1697 }
1698
1699 return undef;
1700}
1701
9c7e0858 1702# core functions
780bcc0f
DM		 1703my $bridge_firewall_enabled = 0;
1704
1705sub enable_bridge_firewall {
1706
1707 return if $bridge_firewall_enabled; # only once
1708
5f0a912c
DM		 1709 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1710 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1711
6a8a75db
DM		 1712 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1713 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1714
780bcc0f
DM		 1715 $bridge_firewall_enabled = 1;
1716}
1717
b16e818e
DM		 1718sub iptables_restore_cmdlist {
1719 my ($cmdlist) = @_;
3a616aa0 1720
59f9b456 1721 run_command("/sbin/iptables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
3a616aa0
AD		 1722}
1723
17da5c0f
AD		 1724sub ip6tables_restore_cmdlist {
1725 my ($cmdlist) = @_;
1726
59f9b456 1727 run_command("/sbin/ip6tables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
17da5c0f
AD		 1728}
1729
34cdedfa
AD		 1730sub ipset_restore_cmdlist {
1731 my ($cmdlist) = @_;
1732
ff5363da 1733 run_command("/sbin/ipset restore", input => $cmdlist, errmsg => "ipset_restore_cmdlist");
34cdedfa
AD		 1734}
1735
151c209e
AD		 1736sub ebtables_restore_cmdlist {
1737 my ($cmdlist) = @_;
1738
1739 run_command("/sbin/ebtables-restore", input => $cmdlist, errmsg => "ebtables_restore_cmdlist");
1740}
1741
de2a57cd 1742sub iptables_get_chains {
17da5c0f
AD		 1743 my ($iptablescmd) = @_;
1744
1745 $iptablescmd = "iptables" if !$iptablescmd;
de2a57cd
DM		 1746
1747 my $res = {};
1748
1749 # check what chains we want to track
1750 my $is_pvefw_chain = sub {
1751 my $name = shift;
1752
dec84fcd
DM		 1753 return 1 if $name =~ m/^PVEFW-\S+$/;
1754
a3ded5cd 1755 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
954f24b1 1756
a3ded5cd 1757 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
954f24b1 1758
a3ded5cd 1759 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
a89dfcc6 1760 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
de2a57cd
DM		 1761
1762 return undef;
1763 };
1764
1765 my $table = '';
1766
c4a2e5ae
DM		 1767 my $hooks = {};
1768
de2a57cd
DM		 1769 my $parser = sub {
1770 my $line = shift;
1771
1772 return if $line =~ m/^#/;
1773 return if $line =~ m/^\s*$/;
1774
1775 if ($line =~ m/^\*(\S+)$/) {
1776 $table = $1;
1777 return;
1778 }
1779
1780 return if $table ne 'filter';
1781
1782 if ($line =~ m/^:(\S+)\s/) {
1783 my $chain = $1;
1784 return if !&$is_pvefw_chain($chain);
3fa83edf 1785 $res->{$chain} = "unknown";
09d5f68e 1786 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1787 my ($chain, $sig) = ($1, $2);
de2a57cd 1788 return if !&$is_pvefw_chain($chain);
3fa83edf 1789 $res->{$chain} = $sig;
c4a2e5ae
DM		 1790 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1791 $hooks->{$1} = 1;
de2a57cd
DM		 1792 } else {
1793 # simply ignore the rest
1794 return;
1795 }
1796 };
1797
17da5c0f 1798 run_command("/sbin/$iptablescmd-save", outfunc => $parser);
de2a57cd 1799
c4a2e5ae 1800 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1801}
1802
9bf7d929
DM		 1803sub iptables_chain_digest {
1804 my ($rules) = @_;
1805 my $digest = Digest::SHA->new('sha1');
1806 foreach my $rule (@$rules) { # order is important
1807 $digest->add($rule);
1808 }
1809 return $digest->b64digest;
1810}
1811
3f95d14a
DM		 1812sub ipset_chain_digest {
1813 my ($rules) = @_;
4bd0a9c4 1814
3f95d14a
DM		 1815 my $digest = Digest::SHA->new('sha1');
1816 foreach my $rule (sort @$rules) { # note: sorted
1817 $digest->add($rule);
1818 }
1819 return $digest->b64digest;
1820}
1821
34cdedfa
AD		 1822sub ipset_get_chains {
1823
1824 my $res = {};
1825 my $chains = {};
1826
1827 my $parser = sub {
1828 my $line = shift;
1829
1830 return if $line =~ m/^#/;
1831 return if $line =~ m/^\s*$/;
4b96e877 1832 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1833 my $chain = $1;
1834 $line =~ s/\s+$//; # delete trailing white space
1835 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1836 } else {
1837 # simply ignore the rest
1838 return;
1839 }
1840 };
1841
ff5363da 1842 run_command("/sbin/ipset save", outfunc => $parser);
34cdedfa 1843
3f95d14a
DM		 1844 # compute digest for each chain
1845 foreach my $chain (keys %$chains) {
1846 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1847 }
1848
1849 return $res;
1850}
1851
151c209e
AD		 1852sub ebtables_get_chains {
1853
1854 my $res = {};
1855 my $chains = {};
151c209e
AD		 1856 my $parser = sub {
1857 my $line = shift;
1858 return if $line =~ m/^#/;
1859 return if $line =~ m/^\s*$/;
fc1f1de9
WB		 1860 if ($line =~ m/^:(\S+)\s\S+$/) {
1861 # Make sure we know chains exist even if they're empty.
1862 $chains->{$1} //= [];
84025e99 1863 } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) {
151c209e
AD		 1864 my $chain = $1;
1865 $line =~ s/\s+$//;
1866 push @{$chains->{$chain}}, $line;
1867 } else {
1868 # simply ignore the rest
1869 return;
1870 }
1871 };
1872
1873 run_command("/sbin/ebtables-save", outfunc => $parser);
84025e99 1874 # compute digest for each chain and store rules as well
151c209e 1875 foreach my $chain (keys %$chains) {
84025e99
SI		 1876 $res->{$chain}->{rules} = $chains->{$chain};
1877 $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain});
151c209e
AD		 1878 }
1879 return $res;
1880}
1881
180da76c
TW		 1882# substitude action of rule according to action hash
1883sub rule_substitude_action {
1884 my ($rule, $actions) = @_;
1885
1886 if (my $action = $rule->{action}) {
1887 $rule->{action} = $actions->{$action} if defined($actions->{$action});
1888 }
1889}
1890
a44cb745
TW		 1891# generate a src or dst match
1892# $dir(ection) is either d or s
1893sub ipt_gen_src_or_dst_match {
1894 my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_;
1895
1896 my $srcdst;
1897 if ($dir eq 's') {
1898 $srcdst = "src";
1899 } elsif ($dir eq 'd') {
1900 $srcdst = "dst";
1901 } else {
1902 die "ipt_gen_src_or_dst_match: invalid direction $dir \n";
1903 }
1904
1905 my $match;
1906 if ($adr =~ m/^\+/) {
1907 if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
1908 my $name = $1;
1909 my $ipset_chain;
1910 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
1911 $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
1912 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
1913 $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
1914 } else {
1915 die "no such ipset '$name'\n";
1916 }
1917 $match = "-m set --match-set ${ipset_chain} ${srcdst}";
1918 } else {
1919 die "invalid security group name '$adr'\n";
1920 }
1921 } elsif ($adr =~ m/^${ip_alias_pattern}$/){
1922 my $alias = lc($adr);
1923 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
1924 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1925 die "no such alias '$adr'\n" if !$e;
1926 $match = "-${dir} $e->{cidr}";
1927 } elsif ($adr =~ m/\-/){
1928 $match = "-m iprange --${srcdst}-range $adr";
1929 } else {
1930 $match = "-${dir} $adr";
1931 }
1932
1933 return $match;
1934}
1935
30c390f9
TW		 1936# convert a %rule to an array of iptables commands
1937sub ipt_rule_to_cmds {
1938 my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_;
1939
1940 die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen
1941
1942 my @match = ();
1943
1944 if (defined $rule->{match}) {
1945 push @match, $rule->{match};
1946 } else {
1947 push @match, "-i $rule->{iface_in}" if $rule->{iface_in};
1948 push @match, "-o $rule->{iface_out}" if $rule->{iface_out};
1949
1950 if ($rule->{source}) {
1951 push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf);
1952 }
1953 if ($rule->{dest}) {
1954 push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf);
1955 }
1956
1957 if (my $proto = $rule->{proto}) {
1958 push @match, "-p $proto";
1959
f776d6de
WB		 1960 my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1);
1961 my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0);
30c390f9 1962
f776d6de
WB		 1963 my $add_dport = sub {
1964 return if !$rule->{dport};
3dffed4c 1965
30c390f9
TW		 1966 if ($proto eq 'icmp') {
1967 # Note: we use dport to store --icmp-type
1968 die "unknown icmp-type '$rule->{dport}'\n"
1969 if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}});
1970 push @match, "-m icmp --icmp-type $rule->{dport}";
1971 } elsif ($proto eq 'icmpv6') {
1972 # Note: we use dport to store --icmpv6-type
1973 die "unknown icmpv6-type '$rule->{dport}'\n"
1974 if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}});
1975 push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
1976 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
1977 die "protocol $proto does not have ports\n";
f776d6de
WB		 1978 } elsif ($multidport) {
1979 push @match, "--match multiport", "--dports $rule->{dport}";
30c390f9 1980 } else {
f776d6de 1981 push @match, "--dport $rule->{dport}";
30c390f9 1982 }
f776d6de 1983 };
30c390f9 1984
f776d6de
WB		 1985 my $add_sport = sub {
1986 return if !$rule->{sport};
3dffed4c 1987
30c390f9
TW		 1988 die "protocol $proto does not have ports\n"
1989 if !$PROTOCOLS_WITH_PORTS->{$proto};
f776d6de
WB		 1990 if ($multisport) {
1991 push @match, "--match multiport", "--sports $rule->{sport}";
30c390f9
TW		 1992 } else {
1993 push @match, "--sport $rule->{sport}";
1994 }
f776d6de
WB		 1995 };
1996
3dffed4c 1997 # order matters - single port before multiport!
f776d6de
WB		 1998 $add_dport->() if $multisport;
1999 $add_sport->();
2000 $add_dport->() if !$multisport;
30c390f9
TW		 2001 } elsif ($rule->{dport} || $rule->{sport}) {
2002 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
2003 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
2004 }
2005
2006 push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
2007 }
2008 my $matchstr = scalar(@match) ? join(' ', @match) : "";
2009
2010 my $targetstr;
2011 if (defined $rule->{target}) {
2012 $targetstr = $rule->{target};
2013 } else {
2014 my $action = (defined $rule->{action}) ? $rule->{action} : "";
2015 my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
2016 $targetstr = ($goto) ? "-g $action" : "-j $action";
2017 }
2018
2019 my @iptcmds;
2db2b6aa
TL		 2020 my $log = $rule->{log};
2021 if (defined($log) && $log ne 'nolog') {
3489f8a2
CE		 2022 my $loglevel = $log_level_hash->{$log};
2023 my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel);
30c390f9
TW		 2024 push @iptcmds, "-A $chain $matchstr $logaction";
2025 }
2026 push @iptcmds, "-A $chain $matchstr $targetstr";
2027 return @iptcmds;
2028}
2029
eba0fb64 2030sub ruleset_generate_rule {
3489f8a2 2031 my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_;
eba0fb64 2032
e5076eee
DM		 2033 my $rules;
2034
2035 if ($rule->{macro}) {
35d1d6da 2036 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
e5076eee
DM		 2037 } else {
2038 $rules = [ $rule ];
2039 }
2040
30c390f9
TW		 2041 # update all or nothing
2042 my @ipt_rule_cmds;
2043 foreach my $r (@$rules) {
3489f8a2 2044 push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid);
30c390f9
TW		 2045 }
2046 foreach my $c (@ipt_rule_cmds) {
2047 ruleset_add_ipt_cmd($ruleset, $chain, $c);
2048 }
2049}
2050
3fa83edf
DM		 2051sub ruleset_create_chain {
2052 my ($ruleset, $chain) = @_;
3a616aa0 2053
d050c724 2054 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 2055 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 2056
3fa83edf
DM		 2057 die "chain '$chain' already exists\n" if $ruleset->{$chain};
2058
2059 $ruleset->{$chain} = [];
3a616aa0
AD		 2060}
2061
3fa83edf
DM		 2062sub ruleset_chain_exist {
2063 my ($ruleset, $chain) = @_;
3a616aa0 2064
3fa83edf
DM		 2065 return $ruleset->{$chain} ? 1 : undef;
2066}
3a616aa0 2067
30c390f9
TW		 2068# add an iptables command (like generated by ipt_rule_to_cmds) to a chain
2069sub ruleset_add_ipt_cmd {
2070 my ($ruleset, $chain, $iptcmd) = @_;
2071
2072 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2073
2074 push @{$ruleset->{$chain}}, $iptcmd;
2075}
2076
1e9c5070 2077sub ruleset_addrule {
3489f8a2 2078 my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
1e9c5070 2079
3489f8a2 2080 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1e9c5070 2081
3489f8a2
CE		 2082 if ($log) {
2083 my $loglevel = $log_level_hash->{$log};
2084 my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel);
7f7930f8 2085 push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
3489f8a2
CE		 2086 }
2087 # for stable ebtables digests avoid double-spaces to match ebtables-save output
2088 $match .= ' ' if length($match);
2089 push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
1e9c5070
TW		 2090}
2091
3fa83edf 2092sub ruleset_insertrule {
1e9c5070 2093 my ($ruleset, $chain, $match, $action, $log) = @_;
3a616aa0 2094
3fa83edf 2095 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 2096
1e9c5070 2097 unshift @{$ruleset->{$chain}}, "-A $chain $match $action";
3fa83edf 2098}
3a616aa0 2099
782c4cde
DM		 2100sub get_log_rule_base {
2101 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 2102
782c4cde 2103 $vmid = 0 if !defined($vmid);
7f7930f8 2104 $msg = "" if !defined($msg);
782c4cde 2105
cbb5d6f3 2106 # Note: we use special format for prefix to pass further
7f7930f8 2107 # info to log daemon (VMID, LOGLEVEL and CHAIN)
782c4cde 2108
3c57745a 2109 return "-m limit --limit 1/sec -j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
782c4cde
DM		 2110}
2111
ead850e8 2112sub ruleset_add_chain_policy {
88c26d5e 2113 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 2114
2115 if ($policy eq 'ACCEPT') {
2116
180da76c
TW		 2117 my $rule = { action => 'ACCEPT' };
2118 rule_substitude_action($rule, { ACCEPT => $accept_action});
2119 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
ead850e8
DM		 2120
2121 } elsif ($policy eq 'DROP') {
2122
1e9c5070 2123 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop");
ead850e8 2124
7f7930f8 2125 ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid);
ead850e8 2126 } elsif ($policy eq 'REJECT') {
1e9c5070 2127 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject");
ead850e8 2128
d8d4dd67 2129 ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid);
ead850e8
DM		 2130 } else {
2131 # should not happen
2132 die "internal error: unknown policy '$policy'";
2133 }
2134}
2135
a83abe93 2136sub ruleset_chain_add_ndp {
e8415920 2137 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
a83abe93
WB		 2138 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
2139
1e9c5070 2140 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept);
d7aa51ac 2141 if ($direction ne 'OUT' || $options->{radv}) {
1e9c5070 2142 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept);
d7aa51ac 2143 }
1e9c5070
TW		 2144 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept);
2145 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept);
a83abe93
WB		 2146}
2147
e2943485 2148sub ruleset_chain_add_conn_filters {
27c49e25 2149 my ($ruleset, $chain, $allow_invalid, $accept) = @_;
e2943485 2150
27c49e25
CE		 2151 if (!$allow_invalid) {
2152 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
2153 }
1e9c5070 2154 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept");
e2943485
DM		 2155}
2156
2157sub ruleset_chain_add_input_filters {
88c26d5e 2158 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2428e394
AD		 2159
2160 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 2161 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
2162 ruleset_create_chain($ruleset, "PVEFW-blacklist");
3489f8a2 2163 ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0);
b5831a0d 2164 }
88c26d5e 2165 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1e9c5070 2166 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist");
2428e394 2167 }
e2943485
DM		 2168
2169 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
5b5c42b1 2170 if ($ipversion == 4) {
1e9c5070 2171 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs");
5b5c42b1 2172 }
e2943485
DM		 2173 }
2174
2175 if ($options->{tcpflags}) {
1e9c5070 2176 ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags");
e2943485
DM		 2177 }
2178}
2179
9e15114a 2180sub ruleset_create_vm_chain {
88c26d5e 2181 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 2182
9e15114a 2183 ruleset_create_chain($ruleset, $chain);
b47ecc88 2184 my $accept = generate_nfqueue($options);
3a616aa0 2185
ce15d90b 2186 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
dcafc5fb
WB		 2187 if ($ipversion == 4) {
2188 if ($direction eq 'OUT') {
2189 ruleset_generate_rule($ruleset, $chain, $ipversion,
2190 { action => 'PVEFW-SET-ACCEPT-MARK',
2191 proto => 'udp', sport => 68, dport => 67 });
2192 } else {
2193 ruleset_generate_rule($ruleset, $chain, $ipversion,
2194 { action => 'ACCEPT',
2195 proto => 'udp', sport => 67, dport => 68 });
2196 }
2197 } elsif ($ipversion == 6) {
2198 if ($direction eq 'OUT') {
2199 ruleset_generate_rule($ruleset, $chain, $ipversion,
2200 { action => 'PVEFW-SET-ACCEPT-MARK',
2201 proto => 'udp', sport => 546, dport => 547 });
2202 } else {
2203 ruleset_generate_rule($ruleset, $chain, $ipversion,
2204 { action => 'ACCEPT',
2205 proto => 'udp', sport => 547, dport => 546 });
2206 }
76a2d1e7 2207 }
dcafc5fb 2208
ce15d90b
DM		 2209 }
2210
b21aca2c
DM		 2211 if ($direction eq 'OUT') {
2212 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1e9c5070 2213 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP");
b21aca2c 2214 }
d7aa51ac 2215 if ($ipversion == 6 && !$options->{radv}) {
1e9c5070 2216 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP");
d7aa51ac 2217 }
808d711d 2218 if ($ipfilter_ipset) {
1e9c5070 2219 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP");
808d711d 2220 }
1e9c5070 2221 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
c29f55c9 2222 }
e8415920
WB		 2223
2224 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept";
2225 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
9e15114a
DM		 2226}
2227
4bc6b5ac 2228sub ruleset_add_group_rule {
aedde2c2 2229 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM		 2230
2231 my $group = $rule->{action};
2232 my $group_chain = "GROUP-$group-$direction";
2233 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 2234 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 2235 }
bfc488f6 2236
f8b12fff 2237 if ($direction eq 'OUT' && $rule->{iface_out}) {
1e9c5070 2238 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain");
f8b12fff 2239 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1e9c5070 2240 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain");
4bc6b5ac 2241 } else {
1e9c5070 2242 ruleset_addrule($ruleset, $chain, "", "-j $group_chain");
4bc6b5ac
DM		 2243 }
2244
1e9c5070 2245 ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action");
4bc6b5ac
DM		 2246}
2247
9e15114a 2248sub ruleset_generate_vm_rules {
3489f8a2 2249 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_;
9e15114a
DM		 2250
2251 my $lc_direction = lc($direction);
c29f55c9 2252
6b8ca015
DM		 2253 my $in_accept = generate_nfqueue($options);
2254
92e976b3
DM		 2255 foreach my $rule (@$rules) {
2256 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 2257 next if !$rule->{enable} || $rule->{errors};
006490cb 2258 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 2259
92e976b3 2260 if ($rule->{type} eq 'group') {
4bc6b5ac 2261 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 2262 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM		 2263 } else {
2264 next if $rule->{type} ne $lc_direction;
921dfb33 2265 eval {
3489f8a2 2266 $rule->{logmsg} = "$rule->{action}: ";
921dfb33 2267 if ($direction eq 'OUT') {
180da76c 2268 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
3489f8a2 2269 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33 2270 } else {
180da76c 2271 rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" });
3489f8a2 2272 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33
DM		 2273 }
2274 };
2275 warn $@ if $@;
4e6112f9 2276 }
3a616aa0 2277 }
9e15114a
DM		 2278}
2279
b47ecc88
AD		 2280sub generate_nfqueue {
2281 my ($options) = @_;
2282
73089769
DM		 2283 if ($options->{ips}) {
2284 my $action = "NFQUEUE";
2285 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2286 if (defined($3) && defined($1)) {
b47ecc88 2287 $action .= " --queue-balance $1:$3";
73089769 2288 } elsif (defined($1)) {
b47ecc88
AD		 2289 $action .= " --queue-num $1";
2290 }
2291 }
8dc92812 2292 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 2293 return $action;
2294 } else {
2295 return "ACCEPT";
b47ecc88 2296 }
b47ecc88
AD		 2297}
2298
da6fc60b 2299sub ruleset_generate_vm_ipsrules {
a01c32c7 2300 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 2301
2302 if ($options->{ips} && $direction eq 'IN') {
2303 my $nfqueue = generate_nfqueue($options);
2304
a01c32c7 2305 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 2306 ruleset_create_chain($ruleset, "PVEFW-IPS");
2307 }
2308
1e9c5070 2309 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue");
da6fc60b
AD		 2310 }
2311}
2312
9e15114a 2313sub generate_tap_rules_direction {
84870b1a 2314 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM		 2315
2316 my $lc_direction = lc($direction);
2317
2318 my $rules = $vmfw_conf->{rules};
2319
2320 my $options = $vmfw_conf->{options};
2321 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
2322
2323 my $tapchain = "$iface-$direction";
2324
b692f42c 2325 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
88c26d5e 2326 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
74601077 2327 if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 2328
a34cfdd0 2329 # create chain with mac and ip filter
88c26d5e 2330 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
9e15114a 2331
a34cfdd0 2332 if ($options->{enable}) {
3489f8a2 2333 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
3a616aa0 2334
a34cfdd0 2335 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 2336
a34cfdd0
DM		 2337 # implement policy
2338 my $policy;
ccae0b50 2339
a34cfdd0
DM		 2340 if ($direction eq 'OUT') {
2341 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2342 } else {
76448f08 2343 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 2344 }
ccae0b50 2345
a34cfdd0
DM		 2346 my $accept = generate_nfqueue($options);
2347 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2348 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
a34cfdd0
DM		 2349 } else {
2350 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
88c26d5e 2351 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
a34cfdd0 2352 }
3a616aa0 2353
3fa83edf 2354 # plug the tap chain to bridge chain
3cc81077 2355 if ($direction eq 'IN') {
a01c32c7 2356 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
3489f8a2 2357 "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain", $loglevel, 'FWBR-IN: ', $vmid);
3cc81077 2358 } else {
a01c32c7 2359 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
3489f8a2 2360 "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain", $loglevel, 'FWBR-OUT: ', $vmid);
3cc81077 2361 }
3a616aa0
AD		 2362}
2363
d18c1e2b 2364sub enable_host_firewall {
aedde2c2 2365 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
0bd5f137 2366
92e976b3 2367 my $options = $hostfw_conf->{options};
63324b09 2368 my $cluster_options = $cluster_conf->{options};
92e976b3 2369 my $rules = $hostfw_conf->{rules};
35f0c37e 2370 my $cluster_rules = $cluster_conf->{rules};
178a63be 2371
3fa83edf 2372 # host inbound firewall
dec84fcd
DM		 2373 my $chain = "PVEFW-HOST-IN";
2374 ruleset_create_chain($ruleset, $chain);
0bd5f137 2375
178a63be
DM		 2376 my $loglevel = get_option_log_level($options, "log_level_in");
2377
1e9c5070 2378 ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT");
4ac863a6 2379
27c49e25 2380 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e8415920 2381 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
88c26d5e 2382 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
fb424a00 2383
23e888f8
DM		 2384 # we use RETURN because we need to check also tap rules
2385 my $accept_action = 'RETURN';
2386
1e9c5070 2387 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2388
35f0c37e
DM		 2389 # add host rules first, so that cluster wide rules can be overwritten
2390 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2391 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2392 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
bfc488f6 2393
f8b12fff 2394 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 2395
1a9978ed
DM		 2396 eval {
2397 if ($rule->{type} eq 'group') {
aedde2c2 2398 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 2399 } elsif ($rule->{type} eq 'in') {
180da76c 2400 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2401 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2402 }
2403 };
2404 warn $@ if $@;
f8b12fff 2405 delete $rule->{iface_in};
0bd5f137 2406 }
eb399cef
DM		 2407
2408 # allow standard traffic for management ipset (includes cluster network)
88c26d5e 2409 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
708ba714 2410 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
1e9c5070
TW		 2411 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API
2412 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2413 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
2414 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH
bfc488f6 2415
afcd29b3
DM		 2416 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2417 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
3bc79f87 2418
eb399cef 2419 # corosync
35d1d6da 2420 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW		 2421 my $corosync_rule = "-p udp --dport 5404:5405";
2422 ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule", "-j $accept_action");
2423 ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action");
3bc79f87 2424 }
0bd5f137 2425
23e888f8 2426 # implement input policy
63324b09 2427 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
88c26d5e 2428 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
0bd5f137 2429
3fa83edf 2430 # host outbound firewall
aadd745e 2431 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 2432 ruleset_create_chain($ruleset, $chain);
2433
178a63be
DM		 2434 $loglevel = get_option_log_level($options, "log_level_out");
2435
1e9c5070 2436 ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT");
e2943485 2437
27c49e25 2438 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e2943485 2439
23e888f8
DM		 2440 # we use RETURN because we may want to check other thigs later
2441 $accept_action = 'RETURN';
e8415920 2442 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action");
23e888f8 2443
1e9c5070 2444 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2445
35f0c37e
DM		 2446 # add host rules first, so that cluster wide rules can be overwritten
2447 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2448 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2449 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
5383df39 2450
f8b12fff 2451 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed 2452 eval {
3489f8a2 2453 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2454 if ($rule->{type} eq 'group') {
aedde2c2 2455 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 2456 } elsif ($rule->{type} eq 'out') {
180da76c 2457 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2458 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2459 }
2460 };
2461 warn $@ if $@;
f8b12fff 2462 delete $rule->{iface_out};
0bd5f137
AD		 2463 }
2464
3bc79f87 2465 # allow standard traffic on cluster network
35d1d6da 2466 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW		 2467 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API
2468 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH
2469 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2470 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
bfc488f6 2471
1e9c5070
TW		 2472 my $corosync_rule = "-p udp --dport 5404:5405";
2473 ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule", "-j $accept_action");
2474 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action");
3bc79f87
DM		 2475 }
2476
23e888f8 2477 # implement output policy
63324b09 2478 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
88c26d5e 2479 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
6158271d 2480
1e9c5070
TW		 2481 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT");
2482 ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN");
9d31b418
AD		 2483}
2484
2485sub generate_group_rules {
aedde2c2 2486 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2487
c6f5cc88 2488 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2489
b4deedab
DM		 2490 if (!$rules) {
2491 warn "no such security group '$group'\n";
2492 $rules = []; # create empty chain
2493 }
2494
3fa83edf 2495 my $chain = "GROUP-${group}-IN";
9d31b418 2496
3fa83edf 2497 ruleset_create_chain($ruleset, $chain);
1e9c5070 2498 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2499
92e976b3
DM		 2500 foreach my $rule (@$rules) {
2501 next if $rule->{type} ne 'in';
7a5a402b 2502 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2503 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
180da76c 2504 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
2dc0a26e 2505 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418
AD		 2506 }
2507
3fa83edf 2508 $chain = "GROUP-${group}-OUT";
9d31b418 2509
3fa83edf 2510 ruleset_create_chain($ruleset, $chain);
1e9c5070 2511 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2512
92e976b3
DM		 2513 foreach my $rule (@$rules) {
2514 next if $rule->{type} ne 'out';
7a5a402b 2515 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2516 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM		 2517 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2518 # check also other tap rules later
180da76c 2519 rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" });
2dc0a26e 2520 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418 2521 }
9d31b418
AD		 2522}
2523
51bae274
DM		 2524my $MAX_NETS = 32;
2525my $valid_netdev_names = {};
2526for (my $i = 0; $i < $MAX_NETS; $i++) {
2527 $valid_netdev_names->{"net$i"} = 1;
2528}
5e1267a5 2529
fe3d79b4
WB		 2530sub get_mark_values {
2531 my ($value, $mask) = @_;
2532 $value = hex($value) if $value =~ /^0x/;
2533 $mask = hex($mask) if defined($mask) && $mask =~ /^0x/;
2534 $mask = 0xffffffff if !defined($mask);
2535 return ($value, $mask);
2536}
2537
51bae274 2538sub parse_fw_rule {
a523e057 2539 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
5e1267a5 2540
d4cda423
DM		 2541 my $orig_line = $line;
2542
6d9246e7
DM		 2543 my $rule = {};
2544
11bac5c2 2545 # we can add single line comments to the end of the rule
6d9246e7
DM		 2546 if ($line =~ s/#\s*(.*?)\s*$//) {
2547 $rule->{comment} = decode('utf8', $1);
2548 }
11bac5c2
DM		 2549
2550 # we can disable a rule when prefixed with '|'
ea9e5116 2551
6d9246e7 2552 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2553
dba740a9
DM		 2554 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2555 die "unable to parse rule: $line\n";
6d9246e7
DM		 2556
2557 $rule->{type} = lc($1);
2558 $rule->{action} = $2;
2559
2560 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2561 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2562 $rule->{macro} = $1;
2563 $rule->{action} = $2;
92e976b3 2564 }
51bae274
DM		 2565 }
2566
dba740a9
DM		 2567 while (length($line)) {
2568 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2569 $rule->{iface} = $1;
dba740a9
DM		 2570 next;
2571 }
51bae274 2572
6d9246e7 2573 last if $rule->{type} eq 'group';
51bae274 2574
dba740a9 2575 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2576 $rule->{proto} = $1;
dba740a9
DM		 2577 next;
2578 }
6d9246e7 2579
dba740a9 2580 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2581 $rule->{dport} = $1;
dba740a9
DM		 2582 next;
2583 }
6d9246e7 2584
dba740a9 2585 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2586 $rule->{sport} = $1;
dba740a9
DM		 2587 next;
2588 }
2589 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2590 $rule->{source} = $1;
dba740a9
DM		 2591 next;
2592 }
2593 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2594 $rule->{dest} = $1;
dba740a9
DM		 2595 next;
2596 }
3489f8a2
CE		 2597 if ($line =~ s/^-log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) {
2598 $rule->{log} = $1;
2599 next;
2600 }
51bae274 2601
dba740a9
DM		 2602 last;
2603 }
ba791b1f 2604
dba740a9 2605 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2606
a523e057 2607 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
eedcb564
WB		 2608 if ($rule->{errors}) {
2609 # The verbose flag really means we're running from the CLI and want
2610 # output on the console - in the other case we really want such errors
2611 # to go into the syslog instead.
2612 my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) };
2613 $log->("$prefix - errors in rule parameters: $orig_line\n");
d4cda423 2614 foreach my $p (keys %{$rule->{errors}}) {
eedcb564 2615 $log->(" $p: $rule->{errors}->{$p}\n");
d4cda423
DM		 2616 }
2617 }
6d9246e7
DM		 2618
2619 return $rule;
51bae274
DM		 2620}
2621
c5e8b008
AD		 2622sub verify_ethertype {
2623 my ($value) = @_;
2624 my $types = get_etc_ethertypes();
2625 die "unknown ethernet protocol type: $value\n"
2626 if !defined($types->{byname}->{$value}) &&
2627 !defined($types->{byid}->{$value});
2628}
2629
2d404ffc 2630sub parse_vmfw_option {
85c6eaed
DM		 2631 my ($line) = @_;
2632
2633 my ($opt, $value);
2634
178a63be
DM		 2635 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2636
74601077 2637 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2638 $opt = lc($1);
2639 $value = int($2);
178a63be
DM		 2640 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2641 $opt = lc($1);
2642 $value = $2 ? lc($3) : '';
72f63fde 2643 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2644 $opt = lc($1);
2645 $value = uc($3);
b47ecc88
AD		 2646 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2647 $opt = lc($1);
2648 $value = $2;
c5e8b008
AD		 2649 } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) {
2650 $opt = lc($1);
2651 $value = $2;
2652 verify_ethertype($_) foreach split(/\s*,\s*/, $value);
9c6b6efd 2653 } else {
85c6eaed
DM		 2654 die "can't parse option '$line'\n"
2655 }
2656
2657 return ($opt, $value);
2658}
2659
2d404ffc
DM		 2660sub parse_hostfw_option {
2661 my ($line) = @_;
2662
2663 my ($opt, $value);
2664
2665 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2666
27c49e25 2667 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2668 $opt = lc($1);
2669 $value = int($2);
178a63be 2670 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2671 $opt = lc($1);
2672 $value = $2 ? lc($3) : '';
28c082a1 2673 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 2674 $opt = lc($1);
2675 $value = int($2);
2d404ffc 2676 } else {
2d404ffc
DM		 2677 die "can't parse option '$line'\n"
2678 }
2679
2680 return ($opt, $value);
2681}
2682
c6f5cc88
DM		 2683sub parse_clusterfw_option {
2684 my ($line) = @_;
2685
2686 my ($opt, $value);
2687
72d055fc 2688 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
c6f5cc88
DM		 2689 $opt = lc($1);
2690 $value = int($2);
72d055fc
AG		 2691 if (($value > 1) && ((time() - $value) > 60)) {
2692 $value = 0
2693 }
2549e7ef 2694 } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) {
84025e99
SI		 2695 $opt = lc($1);
2696 $value = int($2);
63324b09
DM		 2697 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2698 $opt = lc($1);
2699 $value = uc($3);
c6f5cc88 2700 } else {
c6f5cc88
DM		 2701 die "can't parse option '$line'\n"
2702 }
2703
2704 return ($opt, $value);
2705}
2706
6c221576
DM		 2707sub resolve_alias {
2708 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2709
6d959e3f 2710 my $alias = lc($cidr);
04f5088f 2711 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
6d959e3f 2712 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2713
6d959e3f
DM		 2714 die "no such alias '$cidr'\n" if !$e;;
2715
2716 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM		 2717}
2718
ae029a88
DM		 2719sub parse_ip_or_cidr {
2720 my ($cidr) = @_;
2721
2722 my $ipversion;
2723
2724 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2725 $cidr =~ s|/128$||;
2726 $ipversion = 6;
2727 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2728 $cidr =~ s|/32$||;
2729 $ipversion = 4;
2730 } else {
2731 die "value does not look like a valid IP address or CIDR network\n";
2732 }
2733
2734 return wantarray ? ($cidr, $ipversion) : $cidr;
2735}
2736
e76a9f53 2737sub parse_alias {
92e1209b
AD		 2738 my ($line) = @_;
2739
81d574a7
DM		 2740 # we can add single line comments to the end of the line
2741 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2742
92e1209b 2743 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2744 my ($name, $cidr) = ($1, $2);
ae029a88
DM		 2745 my $ipversion;
2746
2747 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2748
81d574a7
DM		 2749 my $data = {
2750 name => $name,
2751 cidr => $cidr,
70e524eb 2752 ipversion => $ipversion,
81d574a7
DM		 2753 };
2754 $data->{comment} = $comment if $comment;
2755 return $data;
92e1209b
AD		 2756 }
2757
81d574a7 2758 return undef;
92e1209b
AD		 2759}
2760
e5cd1ee0 2761sub generic_fw_config_parser {
1210ae94 2762 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
5e1267a5 2763
51bae274
DM		 2764 my $section;
2765 my $group;
2766
1210ae94 2767 my $res = $empty_conf;
6158271d 2768
51bae274
DM		 2769 while (defined(my $line = <$fh>)) {
2770 next if $line =~ m/^#/;
2771 next if $line =~ m/^\s*$/;
2772
c8c534f7
DM		 2773 chomp $line;
2774
961b4928
DM		 2775 my $linenr = $fh->input_line_number();
2776 my $prefix = "$filename (line $linenr)";
2777
1210ae94 2778 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2779 $section = 'options';
2780 next;
2781 }
2782
1210ae94 2783 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2784 $section = 'aliases';
2785 next;
2786 }
2787
1210ae94 2788 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2789 $section = 'groups';
92e976b3 2790 $group = lc($1);
0d22acb3 2791 my $comment = $2;
351052d1
DM		 2792 eval {
2793 die "security group name too long\n" if length($group) > $max_group_name_length;
2794 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2795 };
2796 if (my $err = $@) {
2797 ($section, $group, $comment) = undef;
2798 warn "$prefix: $err";
2799 next;
2800 }
2801
c85c87f9 2802 $res->{$section}->{$group} = [];
649e4d57
DM		 2803 $res->{group_comments}->{$group} = decode('utf8', $comment)
2804 if $comment;
51bae274
DM		 2805 next;
2806 }
34cdedfa 2807
1210ae94 2808 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2809 $section = 'rules';
2810 next;
2811 }
cbb5d6f3 2812
1210ae94 2813 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2814 $section = 'ipset';
2815 $group = lc($1);
d72c631c 2816 my $comment = $2;
351052d1
DM		 2817 eval {
2818 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2819 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2820 };
2821 if (my $err = $@) {
2822 ($section, $group, $comment) = undef;
2823 warn "$prefix: $err";
2824 next;
2825 }
2826
c85c87f9 2827 $res->{$section}->{$group} = [];
e34d0e58 2828 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2829 if $comment;
34cdedfa
AD		 2830 next;
2831 }
2832
c6f5cc88 2833 if (!$section) {
cbb5d6f3 2834 warn "$prefix: skip line - no section\n";
51bae274
DM		 2835 next;
2836 }
2837
c6f5cc88
DM		 2838 if ($section eq 'options') {
2839 eval {
1210ae94
DM		 2840 my ($opt, $value);
2841 if ($rule_env eq 'cluster') {
2842 ($opt, $value) = parse_clusterfw_option($line);
2843 } elsif ($rule_env eq 'host') {
2844 ($opt, $value) = parse_hostfw_option($line);
2845 } else {
2846 ($opt, $value) = parse_vmfw_option($line);
2847 }
c6f5cc88
DM		 2848 $res->{options}->{$opt} = $value;
2849 };
2850 warn "$prefix: $@" if $@;
92e1209b
AD		 2851 } elsif ($section eq 'aliases') {
2852 eval {
e76a9f53 2853 my $data = parse_alias($line);
81d574a7 2854 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2855 };
2856 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2857 } elsif ($section eq 'rules') {
2858 my $rule;
1210ae94 2859 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
c6f5cc88
DM		 2860 if (my $err = $@) {
2861 warn "$prefix: $err";
2862 next;
2863 }
2864 push @{$res->{$section}}, $rule;
2865 } elsif ($section eq 'groups') {
34cdedfa 2866 my $rule;
1210ae94 2867 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
34cdedfa
AD		 2868 if (my $err = $@) {
2869 warn "$prefix: $err";
2870 next;
2871 }
3f95d14a 2872 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2873 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2874 # we can add single line comments to the end of the rule
2875 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2876
30f1b100 2877 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2878 my $nomatch = $1;
9d6f90e6 2879 my $cidr = $2;
d46b1ef6
DM		 2880 my $errors;
2881
2882 if ($nomatch && !$feature_ipset_nomatch) {
2883 $errors->{nomatch} = "nomatch not supported by kernel";
2884 }
2a052ee3 2885
4803b296
DM		 2886 eval {
2887 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2888 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2889 } else {
ae029a88 2890 $cidr = parse_ip_or_cidr($cidr);
92e1209b 2891 }
4803b296
DM		 2892 };
2893 if (my $err = $@) {
c8c534f7 2894 chomp $err;
d46b1ef6 2895 $errors->{cidr} = $err;
2a052ee3 2896 }
2a052ee3 2897
b14db52f
WB		 2898 if ($cidr =~ m!/0+$!) {
2899 $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n";
2900 }
2901
e34d0e58 2902 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2903 $entry->{nomatch} = 1 if $nomatch;
2904 $entry->{comment} = $comment if $comment;
d46b1ef6 2905 $entry->{errors} = $errors if $errors;
e34d0e58 2906
c8c534f7 2907 if ($verbose && $errors) {
9a3061c7 2908 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 2909 foreach my $p (keys %{$errors}) {
2910 warn " $p: $errors->{$p}\n";
2911 }
2912 }
2913
9d6f90e6 2914 push @{$res->{$section}->{$group}}, $entry;
1210ae94
DM		 2915 } else {
2916 warn "$prefix: skip line - unknown section\n";
2917 next;
51bae274 2918 }
5e1267a5
DM		 2919 }
2920
2921 return $res;
2922}
2923
e5cd1ee0 2924sub parse_hostfw_config {
1210ae94
DM		 2925 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2926
2927 my $empty_conf = { rules => [], options => {}};
2928
e5cd1ee0 2929 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
1210ae94
DM		 2930}
2931
e5cd1ee0 2932sub parse_vmfw_config {
1210ae94
DM		 2933 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2934
2935 my $empty_conf = {
2936 rules => [],
2937 options => {},
2938 aliases => {},
2939 ipset => {} ,
2940 ipset_comments => {},
2941 };
2942
e5cd1ee0 2943 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
1210ae94
DM		 2944}
2945
e5cd1ee0 2946sub parse_clusterfw_config {
1210ae94
DM		 2947 my ($filename, $fh, $verbose) = @_;
2948
2949 my $section;
2950 my $group;
2951
2952 my $empty_conf = {
2953 rules => [],
2954 options => {},
2955 aliases => {},
2956 groups => {},
2957 group_comments => {},
2958 ipset => {} ,
2959 ipset_comments => {},
2960 };
2961
e5cd1ee0 2962 return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
1210ae94
DM		 2963}
2964
06320eb0
DM		 2965sub run_locked {
2966 my ($code, @param) = @_;
2967
2968 my $timeout = 10;
2969
2970 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2971
2972 die $@ if $@;
2973
2974 return $res;
2975}
2976
5e1267a5
DM		 2977sub read_local_vm_config {
2978
5e1267a5 2979 my $qemu = {};
3b4882dc 2980 my $lxc = {};
5e1267a5 2981
fdefeeab 2982 my $vmdata = { qemu => $qemu, lxc => $lxc };
5e1267a5 2983
c8301d63
DM		 2984 my $vmlist = PVE::Cluster::get_vmlist();
2985 return $vmdata if !$vmlist || !$vmlist->{ids};
2986 my $ids = $vmlist->{ids};
2987
2988 foreach my $vmid (keys %$ids) {
2989 next if !$vmid; # skip VE0
2990 my $d = $ids->{$vmid};
2991 next if !$d->{node} || $d->{node} ne $nodename;
2992 next if !$d->{type};
fdefeeab 2993 if ($d->{type} eq 'qemu') {
d9fee004 2994 if ($have_qemu_server) {
b5a16dd3 2995 my $cfspath = PVE::QemuConfig->cfs_config_path($vmid);
d9fee004
DM		 2996 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2997 $qemu->{$vmid} = $conf;
2998 }
c8301d63 2999 }
3b4882dc
AG		 3000 } elsif ($d->{type} eq 'lxc') {
3001 if ($have_lxc) {
a7c85d56 3002 my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
3b4882dc
AG		 3003 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3004 $lxc->{$vmid} = $conf;
3005 }
3006 }
3007 }
5e1267a5 3008 }
d9fee004 3009
5e1267a5
DM		 3010 return $vmdata;
3011};
3012
e7b35711 3013sub load_vmfw_conf {
a523e057 3014 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
e7b35711
DM		 3015
3016 my $vmfw_conf = {};
3017
21053409 3018 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177
DM		 3019
3020 my $filename = "$dir/$vmid.fw";
e7b35711 3021 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 3022 $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
708ba714 3023 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 3024 }
3025
3026 return $vmfw_conf;
3027}
3028
464f933e 3029my $format_rules = sub {
dba740a9 3030 my ($rules, $allow_iface) = @_;
464f933e
DM		 3031
3032 my $raw = '';
3033
3034 foreach my $rule (@$rules) {
c14dacdf 3035 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 3036 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
3037 $raw .= uc($rule->{type});
7ca36671
DM		 3038 if ($rule->{macro}) {
3039 $raw .= " $rule->{macro}($rule->{action})";
3040 } else {
3041 $raw .= " " . $rule->{action};
3042 }
dba740a9
DM		 3043 if ($allow_iface && $rule->{iface}) {
3044 $raw .= " -i $rule->{iface}";
3045 }
c14dacdf
DM		 3046
3047 if ($rule->{type} ne 'group') {
dba740a9
DM		 3048 $raw .= " -source $rule->{source}" if $rule->{source};
3049 $raw .= " -dest $rule->{dest}" if $rule->{dest};
3050 $raw .= " -p $rule->{proto}" if $rule->{proto};
3051 $raw .= " -dport $rule->{dport}" if $rule->{dport};
3052 $raw .= " -sport $rule->{sport}" if $rule->{sport};
3489f8a2 3053 $raw .= " -log $rule->{log}" if $rule->{log};
c14dacdf
DM		 3054 }
3055
cbb5d6f3 3056 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 3057 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
3058 $raw .= "\n";
3059 } else {
c14dacdf 3060 die "unknown rule type '$rule->{type}'";
464f933e
DM		 3061 }
3062 }
3063
3064 return $raw;
3065};
3066
3067my $format_options = sub {
68c90e21
DM		 3068 my ($options) = @_;
3069
3070 my $raw = '';
464f933e
DM		 3071
3072 $raw .= "[OPTIONS]\n\n";
3073 foreach my $opt (keys %$options) {
3074 $raw .= "$opt: $options->{$opt}\n";
3075 }
3076 $raw .= "\n";
68c90e21
DM		 3077
3078 return $raw;
464f933e
DM		 3079};
3080
0d5f0a0f
DM		 3081my $format_aliases = sub {
3082 my ($aliases) = @_;
3083
3084 my $raw = '';
3085
3086 $raw .= "[ALIASES]\n\n";
3087 foreach my $k (keys %$aliases) {
81d574a7
DM		 3088 my $e = $aliases->{$k};
3089 $raw .= "$e->{name} $e->{cidr}";
3090 $raw .= " # " . encode('utf8', $e->{comment})
3091 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
3092 $raw .= "\n";
0d5f0a0f
DM		 3093 }
3094 $raw .= "\n";
3095
3096 return $raw;
3097};
3098
1210ae94
DM		 3099my $format_ipsets = sub {
3100 my ($fw_conf) = @_;
3101
9d6f90e6
DM		 3102 my $raw = '';
3103
1210ae94
DM		 3104 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
3105 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
3106 my $utf8comment = encode('utf8', $comment);
3107 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
3108 } else {
3109 $raw .= "[IPSET $ipset]\n\n";
3110 }
3111 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 3112
1210ae94
DM		 3113 my $nethash = {};
3114 foreach my $entry (@$options) {
3115 $nethash->{$entry->{cidr}} = $entry;
3116 }
3117
3118 foreach my $cidr (sort keys %$nethash) {
3119 my $entry = $nethash->{$cidr};
3120 my $line = $entry->{nomatch} ? '!' : '';
3121 $line .= $entry->{cidr};
3122 $line .= " # " . encode('utf8', $entry->{comment})
3123 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
3124 $raw .= "$line\n";
3125 }
3126
3127 $raw .= "\n";
9d6f90e6 3128 }
e34d0e58 3129
9d6f90e6
DM		 3130 return $raw;
3131};
3132
464f933e
DM		 3133sub save_vmfw_conf {
3134 my ($vmid, $vmfw_conf) = @_;
3135
3136 my $raw = '';
3137
3138 my $options = $vmfw_conf->{options};
89ea63c8 3139 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3140
e76a9f53 3141 my $aliases = $vmfw_conf->{aliases};
89ea63c8 3142 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 3143
89ea63c8 3144 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 3145
8824b2f0 3146 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 3147 if ($rules && scalar(@$rules)) {
464f933e
DM		 3148 $raw .= "[RULES]\n\n";
3149 $raw .= &$format_rules($rules, 1);
3150 $raw .= "\n";
3151 }
3152
21053409 3153 my $filename = "$pvefw_conf_dir/$vmid.fw";
c32e04e6
FG		 3154 if ($raw) {
3155 mkdir $pvefw_conf_dir;
3156 PVE::Tools::file_set_contents($filename, $raw);
3157 } else {
3158 unlink $filename;
3159 }
464f933e
DM		 3160}
3161
edee9035
AG		 3162sub remove_vmfw_conf {
3163 my ($vmid) = @_;
3164
3165 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
3166
3167 unlink $vmfw_conffile;
3168}
3169
5471ff7c
AG		 3170sub clone_vmfw_conf {
3171 my ($vmid, $newid) = @_;
3172
3173 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
3174 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
3175
3176 if (-f $clonevm_conffile) {
3177 unlink $clonevm_conffile;
3178 }
3179 if (-f $sourcevm_conffile) {
3180 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
3181 PVE::Tools::file_set_contents($clonevm_conffile, $data);
3182 }
3183}
3184
6fc63ffd 3185sub read_vm_firewall_configs {
a523e057 3186 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
8aef5177 3187
6fc63ffd 3188 my $vmfw_configs = {};
c8301d63 3189
b6b8e6ad 3190 foreach my $vmid (keys %{$vmdata->{qemu}}) {
a523e057 3191 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose);
b6b8e6ad
DM		 3192 next if !$vmfw_conf->{options}; # skip if file does not exists
3193 $vmfw_configs->{$vmid} = $vmfw_conf;
3194 }
3b4882dc
AG		 3195 foreach my $vmid (keys %{$vmdata->{lxc}}) {
3196 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose);
3197 next if !$vmfw_conf->{options}; # skip if file does not exists
3198 $vmfw_configs->{$vmid} = $vmfw_conf;
3199 }
5e1267a5 3200
6fc63ffd 3201 return $vmfw_configs;
5e1267a5
DM		 3202}
3203
2d404ffc
DM		 3204sub get_option_log_level {
3205 my ($options, $k) = @_;
3206
3207 my $v = $options->{$k};
178a63be 3208 $v = $default_log_level if !defined($v);
2d404ffc
DM		 3209
3210 return undef if $v eq '' || $v eq 'nolog';
3211
3489f8a2 3212 return $v if defined($log_level_hash->{$v});
2d404ffc
DM		 3213
3214 warn "unknown log level ($k = '$v')\n";
3215
3216 return undef;
3217}
3218
d8f2505e 3219sub generate_std_chains {
db8a955f
DM		 3220 my ($ruleset, $options, $ipversion) = @_;
3221
3222 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
cbb5d6f3 3223
2d404ffc 3224 my $loglevel = get_option_log_level($options, 'smurf_log_level');
044409e5
TW		 3225 my $chain = 'PVEFW-smurflog';
3226 if ( $std_chains->{$chain} ) {
3227 foreach my $r (@{$std_chains->{$chain}}) {
3228 $r->{log} = $loglevel;
3229 }
db8a955f 3230 }
2d404ffc
DM		 3231
3232 # same as shorewall logflags action.
3233 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 3234 $chain = 'PVEFW-logflags';
044409e5
TW		 3235 if ( $std_chains->{$chain} ) {
3236 foreach my $r (@{$std_chains->{$chain}}) {
3237 $r->{log} = $loglevel;
3238 }
3239 }
d8f2505e 3240
db8a955f 3241 foreach my $chain (keys %$std_chains) {
d8f2505e 3242 ruleset_create_chain($ruleset, $chain);
db8a955f 3243 foreach my $rule (@{$std_chains->{$chain}}) {
d8f2505e 3244 if (ref($rule)) {
3489f8a2 3245 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0);
d8f2505e 3246 } else {
044409e5 3247 die "rule $rule as string - should not happen";
d8f2505e
DM		 3248 }
3249 }
3250 }
3251}
3252
34cdedfa 3253sub generate_ipset_chains {
74601077 3254 my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_;
34cdedfa 3255
74601077 3256 foreach my $ipset (keys %{$ipsets}) {
34cdedfa 3257
74601077 3258 my $options = $ipsets->{$ipset};
34cdedfa 3259
ebf72e49
WB		 3260 if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) {
3261 if (my $ips = $device_ips->{$1}) {
3262 $options = [@$options, @$ips];
3263 }
3264 }
3265
88c26d5e
DM		 3266 # remove duplicates
3267 my $nethash = {};
3268 foreach my $entry (@$options) {
3269 next if $entry->{errors}; # skip entries with errors
3270 eval {
3271 my ($cidr, $ver);
3272 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
3273 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
3274 } else {
3275 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
3276 }
3277 #http://backreference.org/2013/03/01/ipv6-address-normalization/
3278 if ($ver == 6) {
e0a9139f
WB		 3279 # ip_compress_address takes an address only, no CIDR
3280 my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@);
3281 $cidr = lc(Net::IP::ip_compress_address($addr, 6));
3282 $cidr .= $prefix_len if defined($prefix_len);
88c26d5e
DM		 3283 $cidr =~ s|/128$||;
3284 } else {
3285 $cidr =~ s|/32$||;
3286 }
34cdedfa 3287
88c26d5e
DM		 3288 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
3289 };
3290 warn $@ if $@;
3291 }
6d959e3f 3292
88c26d5e
DM		 3293 foreach my $ipversion (4, 6) {
3294 my $data = $nethash->{$ipversion};
30f1b100 3295
88c26d5e 3296 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
6d959e3f 3297
88c26d5e
DM		 3298 my $hashsize = scalar(@$options);
3299 if ($hashsize <= 64) {
3300 $hashsize = 64;
3301 } else {
3302 $hashsize = round_powerof2($hashsize);
3303 }
6d959e3f 3304
88c26d5e 3305 my $family = $ipversion == "6" ? "inet6" : "inet";
30f1b100 3306
88c26d5e 3307 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
6d959e3f 3308
88c26d5e
DM		 3309 foreach my $cidr (sort keys %$data) {
3310 my $entry = $data->{$cidr};
6d959e3f 3311
88c26d5e
DM		 3312 my $cmd = "add $name $cidr";
3313 if ($entry->{nomatch}) {
3314 if ($feature_ipset_nomatch) {
3315 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3316 } else {
3317 warn "ignore !$cidr - nomatch not supported by kernel\n";
3318 }
6d959e3f 3319 } else {
88c26d5e 3320 push @{$ipset_ruleset->{$name}}, $cmd;
6d959e3f 3321 }
9d6f90e6 3322 }
9d6f90e6 3323 }
34cdedfa 3324 }
2a052ee3
AD		 3325}
3326
3327sub round_powerof2 {
dd7a13fd 3328 my ($int) = @_;
2a052ee3 3329
dd7a13fd
DM		 3330 $int--;
3331 $int |= $int >> $_ foreach (1,2,4,8,16);
3332 return ++$int;
34cdedfa
AD		 3333}
3334
fca39c2c 3335sub load_clusterfw_conf {
d4cda423 3336 my ($filename, $verbose) = @_;
8aef5177
DM		 3337
3338 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 3339
fca39c2c 3340 my $cluster_conf = {};
8aef5177 3341 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 3342 $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
51bae274 3343 }
5e1267a5 3344
fca39c2c 3345 return $cluster_conf;
e5d76bde
DM		 3346}
3347
fca39c2c
DM		 3348sub save_clusterfw_conf {
3349 my ($cluster_conf) = @_;
9c7e0858
DM		 3350
3351 my $raw = '';
9c7e0858 3352
c6f5cc88 3353 my $options = $cluster_conf->{options};
89ea63c8 3354 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 3355
0d5f0a0f 3356 my $aliases = $cluster_conf->{aliases};
89ea63c8 3357 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 3358
89ea63c8 3359 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
1210ae94 3360
c6f5cc88 3361 my $rules = $cluster_conf->{rules};
89ea63c8 3362 if ($rules && scalar(@$rules)) {
c6f5cc88 3363 $raw .= "[RULES]\n\n";
63c91681 3364 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 3365 $raw .= "\n";
3366 }
3367
89ea63c8
DM		 3368 if ($cluster_conf->{groups}) {
3369 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3370 my $rules = $cluster_conf->{groups}->{$group};
3371 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3372 my $utf8comment = encode('utf8', $comment);
3373 $raw .= "[group $group] # $utf8comment\n\n";
3374 } else {
3375 $raw .= "[group $group]\n\n";
3376 }
0d22acb3 3377
89ea63c8
DM		 3378 $raw .= &$format_rules($rules, 0);
3379 $raw .= "\n";
3380 }
9c7e0858
DM		 3381 }
3382
c32e04e6
FG		 3383 if ($raw) {
3384 mkdir $pvefw_conf_dir;
3385 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3386 } else {
3387 unlink $clusterfw_conf_filename;
3388 }
9c7e0858
DM		 3389}
3390
8b27beb9 3391sub load_hostfw_conf {
a523e057 3392 my ($cluster_conf, $filename, $verbose) = @_;
8aef5177
DM		 3393
3394 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 3395
3396 my $hostfw_conf = {};
8aef5177 3397 if (my $fh = IO::File->new($filename, O_RDONLY)) {
e5cd1ee0 3398 $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
8b27beb9
DM		 3399 }
3400 return $hostfw_conf;
3401}
3402
63c91681
DM		 3403sub save_hostfw_conf {
3404 my ($hostfw_conf) = @_;
3405
3406 my $raw = '';
3407
3408 my $options = $hostfw_conf->{options};
89ea63c8 3409 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3410
63c91681 3411 my $rules = $hostfw_conf->{rules};
89ea63c8 3412 if ($rules && scalar(@$rules)) {
63c91681
DM		 3413 $raw .= "[RULES]\n\n";
3414 $raw .= &$format_rules($rules, 1);
3415 $raw .= "\n";
3416 }
3417
c32e04e6
FG		 3418 if ($raw) {
3419 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3420 } else {
3421 unlink $hostfw_conf_filename;
3422 }
63c91681
DM		 3423}
3424
e5d76bde 3425sub compile {
d4cda423 3426 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3dfa8a7f 3427
8aef5177
DM		 3428 my $vmfw_configs;
3429
cfd7cd9c
TW		 3430 # fixme: once we read standard chains from config this needs to be put in test/standard cases below
3431 $pve_std_chains = dclone($pve_std_chains_conf);
3432
8aef5177
DM		 3433 if ($vmdata) { # test mode
3434 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3435 my $filename = "$testdir/cluster.fw";
d4cda423 3436 $cluster_conf = load_clusterfw_conf($filename, $verbose);
8aef5177
DM		 3437
3438 $filename = "$testdir/host.fw";
a523e057 3439 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
8aef5177 3440
a523e057 3441 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
8aef5177 3442 } else { # normal operation
d4cda423 3443 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
8aef5177 3444
a523e057 3445 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
8aef5177
DM		 3446
3447 $vmdata = read_local_vm_config();
a523e057 3448 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
8aef5177 3449 }
3dfa8a7f 3450
84025e99 3451 return ({},{},{},{}) if !$cluster_conf->{options}->{enable};
9268573a 3452
525778d7
DM		 3453 my $localnet;
3454 if ($cluster_conf->{aliases}->{local_network}) {
3455 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3456 } else {
afcd29b3
DM		 3457 my $localnet_ver;
3458 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3459
84025e99 3460 $cluster_conf->{aliases}->{local_network} = {
afcd29b3 3461 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
525778d7
DM		 3462 }
3463
3464 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 3465
147dd882
WB		 3466 my $ruleset = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
3467 my $rulesetv6 = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose);
c5e8b008 3468 my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $verbose);
147dd882
WB		 3469 my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata);
3470
c5e8b008 3471 return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
147dd882
WB		 3472}
3473
3474sub compile_iptables_filter {
3475 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
085fd492 3476
3fa83edf
DM		 3477 my $ruleset = {};
3478
dec84fcd
DM		 3479 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3480 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 3481
fadb13dd 3482 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 3483
8b27beb9 3484 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 3485
88733a74
AD		 3486 # fixme: what log level should we use here?
3487 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3488
b409c8a8
TL		 3489 my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0;
3490 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT");
88733a74 3491
e2943485 3492 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
88c26d5e 3493 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
e2943485 3494
1e9c5070 3495 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN");
e2943485
DM		 3496
3497 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
1e9c5070 3498 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT");
e2943485 3499
db8a955f 3500 generate_std_chains($ruleset, $hostfw_options, $ipversion);
fadb13dd 3501
6d2ab017 3502 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 3503
35d1d6da 3504 if ($hostfw_enable) {
aedde2c2 3505 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
1a9978ed
DM		 3506 warn $@ if $@; # just to be sure - should not happen
3507 }
3fa83edf 3508
6158271d 3509 # generate firewall rules for QEMU VMs
0a0ba19e 3510 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 3511 eval {
3512 my $conf = $vmdata->{qemu}->{$vmid};
3513 my $vmfw_conf = $vmfw_configs->{$vmid};
3514 return if !$vmfw_conf;
1a9978ed 3515
0a0ba19e 3516 foreach my $netid (sort keys %$conf) {
1a9978ed
DM		 3517 next if $netid !~ m/^net(\d+)$/;
3518 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3519 next if !$net->{firewall};
3520 my $iface = "tap${vmid}i$1";
3521
3522 my $macaddr = $net->{macaddr};
3523 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3524 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3525 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
84870b1a 3526 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed
DM		 3527 }
3528 };
3529 warn $@ if $@; # just to be sure - should not happen
3fa83edf 3530 }
c8301d63 3531
3b4882dc 3532 # generate firewall rules for LXC containers
0a0ba19e 3533 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
3b4882dc
AG		 3534 eval {
3535 my $conf = $vmdata->{lxc}->{$vmid};
3536 my $vmfw_conf = $vmfw_configs->{$vmid};
3537 return if !$vmfw_conf;
3538
3b4882dc 3539 if ($vmfw_conf->{options}->{enable}) {
0a0ba19e 3540 foreach my $netid (sort keys %$conf) {
3b4882dc 3541 next if $netid !~ m/^net(\d+)$/;
a7c85d56 3542 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3b4882dc
AG		 3543 next if !$net->{firewall};
3544 my $iface = "veth${vmid}i$1";
3545 my $macaddr = $net->{hwaddr};
3546 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3547 $vmfw_conf, $vmid, 'IN', $ipversion);
3548 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3549 $vmfw_conf, $vmid, 'OUT', $ipversion);
3550 }
3551 }
3552 };
3553 warn $@ if $@; # just to be sure - should not happen
3554 }
3555
097820b0 3556 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
1e9c5070 3557 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS");
097820b0
AD		 3558 }
3559
147dd882
WB		 3560 return $ruleset;
3561}
3562
ebf72e49
WB		 3563sub mac_to_linklocal {
3564 my ($macaddr) = @_;
3565 my @parts = split(/:/, $macaddr);
3566 # The standard link local address uses the fe80::/64 prefix with the
3567 # modified EUI-64 identifier derived from the MAC address by flipping the
3568 # universal/local bit and inserting FF:FE in the middle.
3569 # See RFC 4291.
3570 $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02);
3571 my @meui64 = (@parts[0,1,2], 'ff', 'fe', @parts[3,4,5]);
3572 return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]";
3573}
3574
147dd882
WB		 3575sub compile_ipsets {
3576 my ($cluster_conf, $vmfw_configs, $vmdata) = @_;
3577
3578 my $localnet;
3579 if ($cluster_conf->{aliases}->{local_network}) {
3580 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3581 } else {
3582 my $localnet_ver;
3583 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3584
3585 $cluster_conf->{aliases}->{local_network} = {
3586 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
3587 }
3588
3589 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3590
3591
3592 my $ipset_ruleset = {};
3593
3594 # generate ipsets for QEMU VMs
3595 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3596 eval {
3597 my $conf = $vmdata->{qemu}->{$vmid};
3598 my $vmfw_conf = $vmfw_configs->{$vmid};
3599 return if !$vmfw_conf;
3600
74601077
WB		 3601 # When the 'ipfilter' option is enabled every device for which there
3602 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3603 # ipset.
3604 # The reason is that ipfilter ipsets are always filled with standard
3605 # IPv6 link-local filters.
3606 my $ipsets = $vmfw_conf->{ipset};
3607 my $implicit_sets = {};
3608
ebf72e49
WB		 3609 my $device_ips = {};
3610 foreach my $netid (keys %$conf) {
3611 next if $netid !~ m/^net(\d+)$/;
3612 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3613 next if !$net->{firewall};
3614
74601077
WB		 3615 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3616 $implicit_sets->{"ipfilter-$netid"} = [];
3617 }
3618
ebf72e49
WB		 3619 my $macaddr = $net->{macaddr};
3620 my $linklocal = mac_to_linklocal($macaddr);
3621 $device_ips->{$netid} = [
3622 { cidr => $linklocal },
3623 { cidr => 'fe80::/10', nomatch => 1 }
3624 ];
3625 }
3626
74601077
WB		 3627 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3628 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
147dd882
WB		 3629 };
3630 warn $@ if $@; # just to be sure - should not happen
3631 }
3632
3633 # generate firewall rules for LXC containers
3634 foreach my $vmid (keys %{$vmdata->{lxc}}) {
aa229652
WB		 3635 eval {
3636 my $conf = $vmdata->{lxc}->{$vmid};
3637 my $vmfw_conf = $vmfw_configs->{$vmid};
3638 return if !$vmfw_conf;
147dd882 3639
74601077
WB		 3640 # When the 'ipfilter' option is enabled every device for which there
3641 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3642 # ipset.
3643 # The reason is that ipfilter ipsets are always filled with standard
383fe679
WB		 3644 # IPv6 link-local filters, as well as the IP addresses configured
3645 # for the container.
74601077
WB		 3646 my $ipsets = $vmfw_conf->{ipset};
3647 my $implicit_sets = {};
3648
ebf72e49
WB		 3649 my $device_ips = {};
3650 foreach my $netid (keys %$conf) {
3651 next if $netid !~ m/^net(\d+)$/;
a7c85d56 3652 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
ebf72e49
WB		 3653 next if !$net->{firewall};
3654
74601077
WB		 3655 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3656 $implicit_sets->{"ipfilter-$netid"} = [];
3657 }
3658
ebf72e49
WB		 3659 my $macaddr = $net->{hwaddr};
3660 my $linklocal = mac_to_linklocal($macaddr);
383fe679 3661 my $set = $device_ips->{$netid} = [
ebf72e49
WB		 3662 { cidr => $linklocal },
3663 { cidr => 'fe80::/10', nomatch => 1 }
3664 ];
37ef1ce1 3665 if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) {
383fe679
WB		 3666 push @$set, { cidr => $1 };
3667 }
37ef1ce1 3668 if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) {
383fe679
WB		 3669 push @$set, { cidr => $1 };
3670 }
ebf72e49
WB		 3671 }
3672
74601077
WB		 3673 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3674 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
aa229652
WB		 3675 };
3676 warn $@ if $@; # just to be sure - should not happen
147dd882
WB		 3677 }
3678
74601077 3679 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset});
27083984 3680
147dd882 3681 return $ipset_ruleset;
3fa83edf
DM		 3682}
3683
c5e8b008
AD		 3684sub compile_ebtables_filter {
3685 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $verbose) = @_;
3686
2549e7ef 3687 if (!($cluster_conf->{options}->{ebtables} // 1)) {
84025e99
SI		 3688 return {};
3689 }
c5e8b008
AD		 3690
3691 my $ruleset = {};
3692
3693 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3694
c5e8b008
AD		 3695 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3696 #for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED', to speedup rules
3697 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv4', '-j ACCEPT');
3698 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv6', '-j ACCEPT');
3699 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-o fwln+', '-j PVEFW-FWBR-OUT');
3700
3701 # generate firewall rules for QEMU VMs
2e30c5c7 3702 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
c5e8b008
AD		 3703 eval {
3704 my $conf = $vmdata->{qemu}->{$vmid};
3705 my $vmfw_conf = $vmfw_configs->{$vmid};
3706 return if !$vmfw_conf;
401c141b 3707 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3708
4a1072dd 3709 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3710 next if $netid !~ m/^net(\d+)$/;
3711 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3712 next if !$net->{firewall};
3713 my $iface = "tap${vmid}i$1";
3714 my $macaddr = $net->{macaddr};
401c141b
AD		 3715 my $arpfilter = [];
3716 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3717 foreach my $ipaddr (@$ipset) {
3718 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3719 next if !$ip || ($version && $version != 4);
3720 push(@$arpfilter, $ip);
3721 }
3722 }
3723 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3724 }
3725 };
3726 warn $@ if $@; # just to be sure - should not happen
3727 }
3728
3729 # generate firewall rules for LXC containers
2e30c5c7 3730 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
c5e8b008
AD		 3731 eval {
3732 my $conf = $vmdata->{lxc}->{$vmid};
3733
3734 my $vmfw_conf = $vmfw_configs->{$vmid};
3735 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
401c141b 3736 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3737
4a1072dd 3738 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3739 next if $netid !~ m/^net(\d+)$/;
3740 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3741 next if !$net->{firewall};
3742 my $iface = "veth${vmid}i$1";
3743 my $macaddr = $net->{hwaddr};
401c141b
AD		 3744 my $arpfilter = [];
3745 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3746 foreach my $ipaddr (@$ipset) {
3747 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3748 next if !$ip || ($version && $version != 4);
3749 push(@$arpfilter, $ip);
3750 }
3751 }
3752 push(@$arpfilter, $net->{ip}) if $net->{ip} && $vmfw_conf->{options}->{ipfilter};
3753 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3754 }
3755 };
3756 warn $@ if $@; # just to be sure - should not happen
3757 }
3758
3759 return $ruleset;
3760}
3761
3762sub generate_tap_layer2filter {
401c141b 3763 my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_;
c5e8b008
AD		 3764 my $options = $vmfw_conf->{options};
3765
3766 my $tapchain = $iface."-OUT";
3767
3768 # ebtables remove zeros from mac pairs
3769 $macaddr =~ s/0([0-9a-f])/$1/ig;
3770 $macaddr = lc($macaddr);
3771
3772 ruleset_create_chain($ruleset, $tapchain);
3773
3774 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
3775 ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP');
3776 }
3777
401c141b
AD		 3778 if (@$arpfilter){
3779 my $arpchain = $tapchain."-ARP";
3780 ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain");
3781 ruleset_create_chain($ruleset, $arpchain);
3782
3783 foreach my $ip (@{$arpfilter}) {
3784 ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN');
3785 }
3786 ruleset_addrule($ruleset, $arpchain, '', '-j DROP');
3787 }
3788
c5e8b008 3789 if (defined($options->{layer2_protocols})){
33efd363
AD		 3790 my $protochain = $tapchain."-PROTO";
3791 ruleset_addrule($ruleset, $tapchain, '', "-j $protochain");
3792 ruleset_create_chain($ruleset, $protochain);
3793
c5e8b008 3794 foreach my $proto (split(/,/, $options->{layer2_protocols})) {
33efd363 3795 ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN');
c5e8b008 3796 }
33efd363 3797 ruleset_addrule($ruleset, $protochain, '', '-j DROP');
c5e8b008
AD		 3798 }
3799
33efd363
AD		 3800 ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT');
3801
c5e8b008
AD		 3802 ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT', "-i $iface", "-j $tapchain");
3803}
3804
84025e99
SI		 3805# the parameter $change_only_regex changes two things if defined:
3806# * all chains not matching it will be left intact
3807# * both the $active_chains hash and the returned status_hash have different
3808# structure (they contain a key named 'rules').
3fa83edf 3809sub get_ruleset_status {
84025e99 3810 my ($ruleset, $active_chains, $digest_fn, $verbose, $change_only_regex) = @_;
3fa83edf
DM		 3811
3812 my $statushash = {};
3813
3814 foreach my $chain (sort keys %$ruleset) {
84025e99
SI		 3815 my $rules = $ruleset->{$chain};
3816 my $sig = &$digest_fn($rules);
3817 my $oldsig;
9bf7d929 3818
3fa83edf 3819 $statushash->{$chain}->{sig} = $sig;
84025e99
SI		 3820 if (defined($change_only_regex)) {
3821 $oldsig = $active_chains->{$chain}->{sig};
3822 $statushash->{$chain}->{rules} = $rules;
3823 } else {
3824 $oldsig = $active_chains->{$chain};
3825 }
3fa83edf
DM		 3826 if (!defined($oldsig)) {
3827 $statushash->{$chain}->{action} = 'create';
3828 } else {
3829 if ($oldsig eq $sig) {
3830 $statushash->{$chain}->{action} = 'exists';
3831 } else {
3832 $statushash->{$chain}->{action} = 'update';
3833 }
3834 }
84025e99
SI		 3835 if ($verbose) {
3836 print "$statushash->{$chain}->{action} $chain ($sig)\n";
3837 foreach my $cmd (@{$rules}) {
3838 print "\t$cmd\n";
3839 }
3fa83edf
DM		 3840 }
3841 }
3842
3843 foreach my $chain (sort keys %$active_chains) {
84025e99
SI		 3844 next if defined($ruleset->{$chain});
3845 my $action = 'delete';
d9551052 3846 my $sig = $active_chains->{$chain};
84025e99
SI		 3847 if (defined($change_only_regex)) {
3848 $action = 'ignore' if ($chain !~ m/$change_only_regex/);
3849 $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules};
d9551052 3850 $sig = $sig->{sig};
84025e99 3851 }
84025e99
SI		 3852 $statushash->{$chain}->{action} = $action;
3853 $statushash->{$chain}->{sig} = $sig;
3854 print "$action $chain ($sig)\n" if $verbose;
6158271d 3855 }
2a052ee3 3856
3fa83edf
DM		 3857 return $statushash;
3858}
3859
3fa83edf
DM		 3860sub print_sig_rule {
3861 my ($chain, $sig) = @_;
3862
09d5f68e
DM		 3863 # We just use this to store a SHA1 checksum used to detect changes
3864 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 3865}
3866
df7cb349 3867sub get_ruleset_cmdlist {
17da5c0f 3868 my ($ruleset, $verbose, $iptablescmd) = @_;
3fa83edf 3869
3fa83edf 3870 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 3871
17da5c0f 3872 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd);
4bd0a9c4 3873 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 3874
3875 # create missing chains first
3876 foreach my $chain (sort keys %$ruleset) {
3877 my $stat = $statushash->{$chain};
3878 die "internal error" if !$stat;
3879 next if $stat->{action} ne 'create';
886aba9c 3880
3fa83edf
DM		 3881 $cmdlist .= ":$chain - [0:0]\n";
3882 }
3883
4bd0a9c4 3884 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
55fad3b7
DM		 3885 my $chain = "PVEFW-$h";
3886 if ($ruleset->{$chain} && !$hooks->{$h}) {
3887 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 3888 }
3fa83edf
DM		 3889 }
3890
3891 foreach my $chain (sort keys %$ruleset) {
3892 my $stat = $statushash->{$chain};
3893 die "internal error" if !$stat;
3894
3895 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
3896 $cmdlist .= "-F $chain\n";
3897 foreach my $cmd (@{$ruleset->{$chain}}) {
3898 $cmdlist .= "$cmd\n";
3899 }
3900 $cmdlist .= print_sig_rule($chain, $stat->{sig});
3901 } elsif ($stat->{action} eq 'delete') {
f5d28682 3902 die "internal error"; # this should not happen
3fa83edf
DM		 3903 } elsif ($stat->{action} eq 'exists') {
3904 # do nothing
3905 } else {
3906 die "internal error - unknown status '$stat->{action}'";
3907 }
3908 }
3909
f5d28682
DM		 3910 foreach my $chain (keys %$statushash) {
3911 next if $statushash->{$chain}->{action} ne 'delete';
3912 $cmdlist .= "-F $chain\n";
3913 }
3914 foreach my $chain (keys %$statushash) {
3915 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 3916 next if $chain eq 'PVEFW-INPUT';
3917 next if $chain eq 'PVEFW-OUTPUT';
3918 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 3919 $cmdlist .= "-X $chain\n";
3920 }
3921
3f95d14a 3922 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 3923
3fa83edf
DM		 3924 $cmdlist .= "COMMIT\n";
3925
3f95d14a 3926 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 3927}
3928
d4a23c88 3929my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/;
84025e99 3930
151c209e
AD		 3931sub get_ebtables_cmdlist {
3932 my ($ruleset, $verbose) = @_;
3933
3934 my $changes = 0;
3935 my $cmdlist = "*filter\n";
3936
84025e99
SI		 3937 my $active_chains = ebtables_get_chains();
3938 my $statushash = get_ruleset_status($ruleset, $active_chains,
3939 \&iptables_chain_digest, $verbose,
3940 $pve_ebtables_chainname_regex);
151c209e 3941
84025e99
SI		 3942 # create chains first and make sure PVE rules are evaluated if active
3943 my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD';
3944 my $pve_include = 0;
3945 foreach my $chain (sort keys %$statushash) {
3946 next if ($statushash->{$chain}->{action} eq 'delete');
151c209e 3947 $cmdlist .= ":$chain ACCEPT\n";
84025e99 3948 $pve_include = 1 if ($chain eq 'PVEFW-FORWARD');
151c209e
AD		 3949 }
3950
84025e99 3951 foreach my $chain (sort keys %$statushash) {
151c209e 3952 my $stat = $statushash->{$chain};
84025e99
SI		 3953 next if ($stat->{action} eq 'delete');
3954 $changes = 1 if ($stat->{action} !~ 'ignore|exists');
151c209e 3955
84025e99
SI		 3956 foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) {
3957 if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) {
3958 next if ! $pve_include;
3959 $pve_include = 0;
3960 }
151c209e
AD		 3961 $cmdlist .= "$cmd\n";
3962 }
3963 }
84025e99 3964 $cmdlist .= "$append_pve_to_forward\n" if $pve_include;
151c209e
AD		 3965
3966 return wantarray ? ($cmdlist, $changes) : $cmdlist;
3967}
3968
34cdedfa 3969sub get_ipset_cmdlist {
dd7a13fd 3970 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 3971
3972 my $cmdlist = "";
3973
dd7a13fd
DM		 3974 my $delete_cmdlist = "";
3975
4bd0a9c4
DM		 3976 my $active_chains = ipset_get_chains();
3977 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 3978
e34d0e58 3979 # remove stale _swap chains
30f1b100
DM		 3980 foreach my $chain (keys %$active_chains) {
3981 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3982 $cmdlist .= "destroy $chain\n";
3983 }
3984 }
3985
c69cf614 3986 foreach my $chain (keys %$ruleset) {
c69cf614
DM		 3987 my $stat = $statushash->{$chain};
3988 die "internal error" if !$stat;
3989
3990 if ($stat->{action} eq 'create') {
3991 foreach my $cmd (@{$ruleset->{$chain}}) {
3992 $cmdlist .= "$cmd\n";
3993 }
3994 }
3995 }
3996
3997 foreach my $chain (keys %$ruleset) {
6d959e3f
DM		 3998 my $stat = $statushash->{$chain};
3999 die "internal error" if !$stat;
34cdedfa 4000
dd7a13fd
DM		 4001 if ($stat->{action} eq 'update') {
4002 my $chain_swap = $chain."_swap";
cbb5d6f3 4003
dd7a13fd
DM		 4004 foreach my $cmd (@{$ruleset->{$chain}}) {
4005 $cmd =~ s/$chain/$chain_swap/;
4006 $cmdlist .= "$cmd\n";
34cdedfa 4007 }
dd7a13fd
DM		 4008 $cmdlist .= "swap $chain_swap $chain\n";
4009 $cmdlist .= "flush $chain_swap\n";
4010 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 4011 }
dd7a13fd 4012 }
3f95d14a 4013
88c26d5e 4014 # the remove unused chains
c69cf614 4015 foreach my $chain (keys %$statushash) {
dd7a13fd 4016 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 4017
dd7a13fd
DM		 4018 $delete_cmdlist .= "flush $chain\n";
4019 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 4020 }
4021
dd7a13fd 4022 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 4023
dd7a13fd 4024 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 4025}
4026
6b9f68a2 4027sub apply_ruleset {
151c209e 4028 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset, $verbose) = @_;
6b9f68a2
DM		 4029
4030 enable_bridge_firewall();
4031
cbb5d6f3 4032 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
9a462317 4033 get_ipset_cmdlist($ipset_ruleset, $verbose);
6b9f68a2 4034
81a0bf43 4035 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
17da5c0f 4036 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables");
151c209e 4037 my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset, $verbose);
2a052ee3 4038
81a0bf43
DM		 4039 if ($verbose) {
4040 if ($ipset_changes) {
4041 print "ipset changes:\n";
4042 print $ipset_create_cmdlist if $ipset_create_cmdlist;
4043 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
4044 }
3f95d14a 4045
81a0bf43
DM		 4046 if ($changes) {
4047 print "iptables changes:\n";
4048 print $cmdlist;
4049 }
17da5c0f
AD		 4050
4051 if ($changesv6) {
4052 print "ip6tables changes:\n";
4053 print $cmdlistv6;
4054 }
151c209e
AD		 4055
4056 if ($ebtables_changes) {
4057 print "ebtables changes:\n";
4058 print $ebtables_cmdlist;
4059 }
81a0bf43 4060 }
3fa83edf 4061
259db1e6
DM		 4062 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
4063 PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || '');
4064
2a052ee3 4065 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 4066
259db1e6
DM		 4067 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
4068 PVE::Tools::file_set_contents($tmpfile, $cmdlist || '');
4069
3fa83edf 4070 iptables_restore_cmdlist($cmdlist);
259db1e6
DM		 4071
4072 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
4073 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
4074
17da5c0f 4075 ip6tables_restore_cmdlist($cmdlistv6);
3fa83edf 4076
259db1e6
DM		 4077 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
4078 PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
4079
dd7a13fd 4080 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 4081
151c209e
AD		 4082 ebtables_restore_cmdlist($ebtables_cmdlist);
4083
4084 $tmpfile = "$pve_fw_status_dir/ebtablescmdlist";
4085 PVE::Tools::file_set_contents($tmpfile, $ebtables_cmdlist || '');
4086
6158271d 4087 # test: re-read status and check if everything is up to date
4bd0a9c4 4088 my $active_chains = iptables_get_chains();
81a0bf43 4089 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 4090
4091 my $errors;
4092 foreach my $chain (sort keys %$ruleset) {
4093 my $stat = $statushash->{$chain};
4094 if ($stat->{action} ne 'exists') {
4095 warn "unable to update chain '$chain'\n";
4096 $errors = 1;
4097 }
4098 }
b6360c3f 4099
17da5c0f
AD		 4100 my $active_chainsv6 = iptables_get_chains("ip6tables");
4101 my $statushashv6 = get_ruleset_status($rulesetv6, $active_chainsv6, \&iptables_chain_digest, 0);
4102
4103 foreach my $chain (sort keys %$rulesetv6) {
4104 my $stat = $statushashv6->{$chain};
4105 if ($stat->{action} ne 'exists') {
4106 warn "unable to update chain '$chain'\n";
4107 $errors = 1;
4108 }
4109 }
4110
151c209e 4111 my $active_ebtables_chains = ebtables_get_chains();
84025e99
SI		 4112 my $ebtables_statushash = get_ruleset_status($ebtables_ruleset,
4113 $active_ebtables_chains, \&iptables_chain_digest,
4114 0, $pve_ebtables_chainname_regex);
151c209e
AD		 4115
4116 foreach my $chain (sort keys %$ebtables_ruleset) {
4117 my $stat = $ebtables_statushash->{$chain};
4118 if ($stat->{action} ne 'exists') {
4119 warn "ebtables : unable to update chain '$chain'\n";
4120 $errors = 1;
4121 }
4122 }
4123
3fa83edf 4124 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 4125
4126 update_nf_conntrack_max($hostfw_conf);
4127
4128 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
4129
6c27f4f3 4130 update_nf_conntrack_logging($hostfw_conf);
b6360c3f
DM		 4131}
4132
490cdead
DM		 4133sub update_nf_conntrack_max {
4134 my ($hostfw_conf) = @_;
4135
4136 my $max = 65536; # reasonable default
4137
4138 my $options = $hostfw_conf->{options} || {};
4139
4140 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
4141 $max = $options->{nf_conntrack_max};
4142 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
4143 }
4144
4145 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
4146 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
4147
4148 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
4149
4150 if ($current != $max) {
4151 my $hashsize = int($max/4);
4152 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
4153 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
4154 }
4155}
4156
28c082a1
AD		 4157sub update_nf_conntrack_tcp_timeout_established {
4158 my ($hostfw_conf) = @_;
4159
4160 my $options = $hostfw_conf->{options} || {};
4161
4162 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
4163
4164 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
4165}
4166
6c27f4f3
DL		 4167my $log_nf_conntrack_enabled = undef;
4168sub update_nf_conntrack_logging {
4169 my ($hostfw_conf) = @_;
4170
4171 my $options = $hostfw_conf->{options} || {};
4172 my $value = $options->{log_nf_conntrack} || 0;
4173 if (!defined($log_nf_conntrack_enabled)
4174 || $value != $log_nf_conntrack_enabled)
4175 {
4176 my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack";
4177 PVE::Tools::file_set_contents($tmpfile, $value);
4178
4179 PVE::Tools::run_command([qw(systemctl try-reload-or-restart pvefw-logger.service)]);
4180 $log_nf_conntrack_enabled = $value;
4181 }
4182}
4183
c4a2e5ae
DM		 4184sub remove_pvefw_chains {
4185
7b7b2654
AD		 4186 PVE::Firewall::remove_pvefw_chains_iptables("iptables");
4187 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
4188 PVE::Firewall::remove_pvefw_chains_ipset();
4189
4190}
4191
4192sub remove_pvefw_chains_iptables {
4193 my ($iptablescmd) = @_;
4194
4195 my ($chash, $hooks) = iptables_get_chains($iptablescmd);
c4a2e5ae
DM		 4196 my $cmdlist = "*filter\n";
4197
4198 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
4199 if ($hooks->{$h}) {
4200 $cmdlist .= "-D $h -j PVEFW-$h\n";
4201 }
4202 }
cbb5d6f3 4203
c4a2e5ae
DM		 4204 foreach my $chain (keys %$chash) {
4205 $cmdlist .= "-F $chain\n";
4206 }
4207
4208 foreach my $chain (keys %$chash) {
4209 $cmdlist .= "-X $chain\n";
4210 }
4211 $cmdlist .= "COMMIT\n";
4212
7b7b2654
AD		 4213 if($iptablescmd eq "ip6tables") {
4214 ip6tables_restore_cmdlist($cmdlist);
4215 } else {
4216 iptables_restore_cmdlist($cmdlist);
4217 }
4218}
4219
4220sub remove_pvefw_chains_ipset {
55fad3b7
DM		 4221
4222 my $ipset_chains = ipset_get_chains();
4223
7b7b2654 4224 my $cmdlist = "";
55fad3b7
DM		 4225
4226 foreach my $chain (keys %$ipset_chains) {
88c26d5e
DM		 4227 $cmdlist .= "flush $chain\n";
4228 $cmdlist .= "destroy $chain\n";
55fad3b7
DM		 4229 }
4230
7b7b2654 4231 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 4232}
4233
8b453a09
DM		 4234sub init {
4235 my $cluster_conf = load_clusterfw_conf();
4236 my $cluster_options = $cluster_conf->{options};
4237 my $enable = $cluster_options->{enable};
4238
4239 return if !$enable;
4240
4241 # load required modules here
4242}
4243
6b9f68a2 4244sub update {
6b9f68a2 4245 my $code = sub {
3dfa8a7f
DM		 4246
4247 my $cluster_conf = load_clusterfw_conf();
4248 my $cluster_options = $cluster_conf->{options};
4249
55fad3b7 4250 if (!$cluster_options->{enable}) {
b22130d3 4251 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 4252 return;
4253 }
4254
50f9a28d 4255 my $hostfw_conf = load_hostfw_conf($cluster_conf);
3dfa8a7f 4256
c5e8b008 4257 my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 4258
151c209e 4259 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
6b9f68a2
DM		 4260 };
4261
4262 run_locked($code);
4263}
4264
b6360c3f 42651;
Firewall test scripts