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clone_vmfw_conf: lock new config
[pve-firewall.git] / src / PVE / Firewall.pm
CommitLineData
b6360c3f
DM		 1package PVE::Firewall;
2
3use warnings;
4use strict;
585ede43 5
09d5f68e 6use Digest::SHA;
0fd61594
TL		 7use Encode;
8use File::Basename;
9use File::Path;
10use IO::File;
11use Net::IP;
12use POSIX;
06208a01 13use Socket qw(AF_INET AF_INET6 inet_ntop inet_pton);
0fd61594
TL		 14use Storable qw(dclone);
15
16use PVE::Cluster;
06208a01 17use PVE::Corosync;
7ca36671 18use PVE::Exception qw(raise raise_param_exc);
0fd61594 19use PVE::INotify;
e74a87f5 20use PVE::JSONSchema qw(register_standard_option get_standard_option);
2e1ae6b9 21use PVE::Network;
0fd61594 22use PVE::ProcFSTools;
eedcb564 23use PVE::SafeSyslog;
0fd61594 24use PVE::Tools qw($IPV4RE $IPV6RE);
1a301a8d 25use PVE::Tools qw(run_command lock_file dir_glob_foreach);
ecbea048 26
21053409
DM		 27my $pvefw_conf_dir = "/etc/pve/firewall";
28my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
fca39c2c 29
fdefeeab 30# dynamically include PVE::QemuServer and PVE::LXC
d9fee004
DM		 31# to avoid dependency problems
32my $have_qemu_server;
33eval {
34 require PVE::QemuServer;
b5a16dd3 35 require PVE::QemuConfig;
d9fee004
DM		 36 $have_qemu_server = 1;
37};
38
3b4882dc
AG		 39my $have_lxc;
40eval {
41 require PVE::LXC;
42 $have_lxc = 1;
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 129my $nodename = PVE::INotify::nodename();
c1f17287 130my $hostfw_conf_filename = "/etc/pve/nodes/$nodename/host.fw";
c8301d63 131
06320eb0
DM		 132my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
133
56f313f7 134my $default_log_level = 'nolog'; # avoid logs by default
cc37e000
TL		 135my $global_log_ratelimit = '--limit 1/sec';
136
2d404ffc
DM		 137my $log_level_hash = {
138 debug => 7,
139 info => 6,
140 notice => 5,
141 warning => 4,
142 err => 3,
143 crit => 2,
144 alert => 1,
145 emerg => 0,
146};
147
40af93c4
TL		 148my $verbose = 0;
149sub set_verbose {
150 $verbose = shift;
151}
152
044409e5
TW		 153# %rule
154#
155# name => optional
30c390f9 156# enable => [0|1]
044409e5
TW		 157# action =>
158# proto =>
30c390f9
TW		 159# sport => port[,port[,port]].. or port:port
160# dport => port[,port[,port]].. or port:port
044409e5
TW		 161# log => optional, loglevel
162# logmsg => optional, logmsg - overwrites default
30c390f9
TW		 163# iface_in => incomin interface
164# iface_out => outgoing interface
044409e5
TW		 165# match => optional, overwrites generation of match
166# target => optional, overwrites action
167
35d1d6da
DM		 168# we need to overwrite some macros for ipv6
169my $pve_ipv6fw_macros = {
170 'Ping' => [
171 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
172 ],
b3d75afb
WB		 173 'NeighborDiscovery' => [
174 "IPv6 neighbor solicitation, neighbor and router advertisement",
c71cdd44 175 { action => 'PARAM', proto => 'icmpv6', dport => 'router-solicitation' },
b3d75afb
WB		 176 { action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' },
177 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' },
178 { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' },
179 ],
a42e9763 180 'DHCPv6' => [
24dd51c2 181 "DHCPv6 traffic",
a42e9763
WB		 182 { action => 'PARAM', proto => 'udp', dport => '546:547', sport => '546:547' },
183 ],
35d1d6da
DM		 184 'Trcrt' => [
185 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
186 { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
187 ],
188 };
189
857f62c8 190# imported/converted from: /usr/share/shorewall/macro.*
961b4928 191my $pve_fw_macros = {
857f62c8 192 'Amanda' => [
ebd54ae9 193 "Amanda Backup",
857f62c8
DM		 194 { action => 'PARAM', proto => 'udp', dport => '10080' },
195 { action => 'PARAM', proto => 'tcp', dport => '10080' },
196 ],
197 'Auth' => [
ebd54ae9 198 "Auth (identd) traffic",
857f62c8
DM		 199 { action => 'PARAM', proto => 'tcp', dport => '113' },
200 ],
201 'BGP' => [
ebd54ae9 202 "Border Gateway Protocol traffic",
857f62c8
DM		 203 { action => 'PARAM', proto => 'tcp', dport => '179' },
204 ],
205 'BitTorrent' => [
ebd54ae9 206 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 207 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 208 { action => 'PARAM', proto => 'udp', dport => '6881' },
209 ],
210 'BitTorrent32' => [
ebd54ae9 211 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 212 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
213 { action => 'PARAM', proto => 'udp', dport => '6881' },
214 ],
06ba9c44
AG		 215 'Ceph' => [
216 "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)",
a44539a3 217 # Legacy port for protocol v1
06ba9c44 218 { action => 'PARAM', proto => 'tcp', dport => '6789' },
a44539a3
CE		 219 # New port for protocol v2
220 { action => 'PARAM', proto => 'tcp', dport => '3300' },
06ba9c44
AG		 221 { action => 'PARAM', proto => 'tcp', dport => '6800:7300' },
222 ],
857f62c8 223 'CVS' => [
ebd54ae9 224 "Concurrent Versions System pserver traffic",
857f62c8
DM		 225 { action => 'PARAM', proto => 'tcp', dport => '2401' },
226 ],
227 'Citrix' => [
ebd54ae9 228 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 229 { action => 'PARAM', proto => 'tcp', dport => '1494' },
230 { action => 'PARAM', proto => 'udp', dport => '1604' },
231 { action => 'PARAM', proto => 'tcp', dport => '2598' },
232 ],
233 'DAAP' => [
ebd54ae9 234 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 235 { action => 'PARAM', proto => 'tcp', dport => '3689' },
236 { action => 'PARAM', proto => 'udp', dport => '3689' },
237 ],
238 'DCC' => [
ebd54ae9 239 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 240 { action => 'PARAM', proto => 'tcp', dport => '6277' },
241 ],
242 'DHCPfwd' => [
d2c3266d 243 "Forwarded DHCP traffic",
857f62c8 244 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
857f62c8
DM		 245 ],
246 'DNS' => [
ebd54ae9 247 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 248 { action => 'PARAM', proto => 'udp', dport => '53' },
249 { action => 'PARAM', proto => 'tcp', dport => '53' },
250 ],
251 'Distcc' => [
ebd54ae9 252 "Distributed Compiler service",
857f62c8
DM		 253 { action => 'PARAM', proto => 'tcp', dport => '3632' },
254 ],
857f62c8 255 'FTP' => [
ebd54ae9 256 "File Transfer Protocol",
857f62c8
DM		 257 { action => 'PARAM', proto => 'tcp', dport => '21' },
258 ],
259 'Finger' => [
ebd54ae9 260 "Finger protocol (RFC 742)",
857f62c8
DM		 261 { action => 'PARAM', proto => 'tcp', dport => '79' },
262 ],
263 'GNUnet' => [
ebd54ae9 264 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 265 { action => 'PARAM', proto => 'tcp', dport => '2086' },
266 { action => 'PARAM', proto => 'udp', dport => '2086' },
267 { action => 'PARAM', proto => 'tcp', dport => '1080' },
268 { action => 'PARAM', proto => 'udp', dport => '1080' },
269 ],
270 'GRE' => [
d2c3266d 271 "Generic Routing Encapsulation tunneling protocol",
857f62c8 272 { action => 'PARAM', proto => '47' },
857f62c8
DM		 273 ],
274 'Git' => [
ebd54ae9 275 "Git distributed revision control traffic",
857f62c8
DM		 276 { action => 'PARAM', proto => 'tcp', dport => '9418' },
277 ],
857f62c8 278 'HKP' => [
ebd54ae9 279 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 280 { action => 'PARAM', proto => 'tcp', dport => '11371' },
281 ],
282 'HTTP' => [
ebd54ae9 283 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 284 { action => 'PARAM', proto => 'tcp', dport => '80' },
285 ],
857f62c8 286 'HTTPS' => [
ebd54ae9 287 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 288 { action => 'PARAM', proto => 'tcp', dport => '443' },
289 ],
290 'ICPV2' => [
ebd54ae9 291 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 292 { action => 'PARAM', proto => 'udp', dport => '3130' },
293 ],
294 'ICQ' => [
ebd54ae9 295 "AOL Instant Messenger traffic",
857f62c8
DM		 296 { action => 'PARAM', proto => 'tcp', dport => '5190' },
297 ],
298 'IMAP' => [
ebd54ae9 299 "Internet Message Access Protocol",
857f62c8
DM		 300 { action => 'PARAM', proto => 'tcp', dport => '143' },
301 ],
302 'IMAPS' => [
ebd54ae9 303 "Internet Message Access Protocol over SSL",
857f62c8
DM		 304 { action => 'PARAM', proto => 'tcp', dport => '993' },
305 ],
306 'IPIP' => [
d2c3266d 307 "IPIP capsulation traffic",
857f62c8 308 { action => 'PARAM', proto => '94' },
857f62c8 309 ],
857f62c8 310 'IPsec' => [
d2c3266d 311 "IPsec traffic",
857f62c8
DM		 312 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
313 { action => 'PARAM', proto => '50' },
857f62c8
DM		 314 ],
315 'IPsecah' => [
d2c3266d 316 "IPsec authentication (AH) traffic",
857f62c8
DM		 317 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
318 { action => 'PARAM', proto => '51' },
857f62c8
DM		 319 ],
320 'IPsecnat' => [
d2c3266d 321 "IPsec traffic and Nat-Traversal",
857f62c8
DM		 322 { action => 'PARAM', proto => 'udp', dport => '500' },
323 { action => 'PARAM', proto => 'udp', dport => '4500' },
324 { action => 'PARAM', proto => '50' },
857f62c8
DM		 325 ],
326 'IRC' => [
ebd54ae9 327 "Internet Relay Chat traffic",
857f62c8
DM		 328 { action => 'PARAM', proto => 'tcp', dport => '6667' },
329 ],
857f62c8 330 'Jetdirect' => [
ebd54ae9 331 "HP Jetdirect printing",
857f62c8
DM		 332 { action => 'PARAM', proto => 'tcp', dport => '9100' },
333 ],
334 'L2TP' => [
ebd54ae9 335 "Layer 2 Tunneling Protocol traffic",
857f62c8 336 { action => 'PARAM', proto => 'udp', dport => '1701' },
857f62c8
DM		 337 ],
338 'LDAP' => [
ebd54ae9 339 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 340 { action => 'PARAM', proto => 'tcp', dport => '389' },
341 ],
342 'LDAPS' => [
ebd54ae9 343 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 344 { action => 'PARAM', proto => 'tcp', dport => '636' },
345 ],
346 'MSNP' => [
ebd54ae9 347 "Microsoft Notification Protocol",
857f62c8
DM		 348 { action => 'PARAM', proto => 'tcp', dport => '1863' },
349 ],
350 'MSSQL' => [
ebd54ae9 351 "Microsoft SQL Server",
857f62c8
DM		 352 { action => 'PARAM', proto => 'tcp', dport => '1433' },
353 ],
354 'Mail' => [
ebd54ae9 355 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 356 { action => 'PARAM', proto => 'tcp', dport => '25' },
357 { action => 'PARAM', proto => 'tcp', dport => '465' },
358 { action => 'PARAM', proto => 'tcp', dport => '587' },
359 ],
7831e1e3
EK		 360 'MDNS' => [
361 "Multicast DNS",
362 { action => 'PARAM', proto => 'udp', dport => '5353' },
363 ],
857f62c8 364 'Munin' => [
ebd54ae9 365 "Munin networked resource monitoring traffic",
857f62c8
DM		 366 { action => 'PARAM', proto => 'tcp', dport => '4949' },
367 ],
368 'MySQL' => [
ebd54ae9 369 "MySQL server",
857f62c8
DM		 370 { action => 'PARAM', proto => 'tcp', dport => '3306' },
371 ],
372 'NNTP' => [
ebd54ae9 373 "NNTP traffic (Usenet).",
857f62c8
DM		 374 { action => 'PARAM', proto => 'tcp', dport => '119' },
375 ],
376 'NNTPS' => [
ebd54ae9 377 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 378 { action => 'PARAM', proto => 'tcp', dport => '563' },
379 ],
380 'NTP' => [
ebd54ae9 381 "Network Time Protocol (ntpd)",
857f62c8
DM		 382 { action => 'PARAM', proto => 'udp', dport => '123' },
383 ],
857f62c8 384 'OSPF' => [
ebd54ae9 385 "OSPF multicast traffic",
857f62c8
DM		 386 { action => 'PARAM', proto => '89' },
387 ],
388 'OpenVPN' => [
ebd54ae9 389 "OpenVPN traffic",
857f62c8
DM		 390 { action => 'PARAM', proto => 'udp', dport => '1194' },
391 ],
392 'PCA' => [
ebd54ae9 393 "Symantec PCAnywere (tm)",
857f62c8
DM		 394 { action => 'PARAM', proto => 'udp', dport => '5632' },
395 { action => 'PARAM', proto => 'tcp', dport => '5631' },
396 ],
870223fd
CE		 397 'PMG' => [
398 "Proxmox Mail Gateway web interface",
399 { action => 'PARAM', proto => 'tcp', dport => '8006' },
400 ],
857f62c8 401 'POP3' => [
ebd54ae9 402 "POP3 traffic",
857f62c8
DM		 403 { action => 'PARAM', proto => 'tcp', dport => '110' },
404 ],
405 'POP3S' => [
ebd54ae9 406 "Encrypted POP3 traffic",
857f62c8
DM		 407 { action => 'PARAM', proto => 'tcp', dport => '995' },
408 ],
409 'PPtP' => [
ebd54ae9 410 "Point-to-Point Tunneling Protocol",
857f62c8 411 { action => 'PARAM', proto => '47' },
857f62c8
DM		 412 { action => 'PARAM', proto => 'tcp', dport => '1723' },
413 ],
414 'Ping' => [
ebd54ae9 415 "ICMP echo request",
269d4f13 416 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 417 ],
418 'PostgreSQL' => [
ebd54ae9 419 "PostgreSQL server",
857f62c8
DM		 420 { action => 'PARAM', proto => 'tcp', dport => '5432' },
421 ],
422 'Printer' => [
ebd54ae9 423 "Line Printer protocol printing",
857f62c8
DM		 424 { action => 'PARAM', proto => 'tcp', dport => '515' },
425 ],
426 'RDP' => [
ebd54ae9 427 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 428 { action => 'PARAM', proto => 'tcp', dport => '3389' },
429 ],
d2c3266d 430 'RIP' => [
ebd54ae9 431 "Routing Information Protocol (bidirectional)",
857f62c8 432 { action => 'PARAM', proto => 'udp', dport => '520' },
857f62c8
DM		 433 ],
434 'RNDC' => [
ebd54ae9 435 "BIND remote management protocol",
857f62c8
DM		 436 { action => 'PARAM', proto => 'tcp', dport => '953' },
437 ],
438 'Razor' => [
ebd54ae9 439 "Razor Antispam System",
056f9211 440 { action => 'PARAM', proto => 'tcp', dport => '2703' },
857f62c8
DM		 441 ],
442 'Rdate' => [
ebd54ae9 443 "Remote time retrieval (rdate)",
857f62c8
DM		 444 { action => 'PARAM', proto => 'tcp', dport => '37' },
445 ],
446 'Rsync' => [
ebd54ae9 447 "Rsync server",
857f62c8
DM		 448 { action => 'PARAM', proto => 'tcp', dport => '873' },
449 ],
450 'SANE' => [
ebd54ae9 451 "SANE network scanning",
857f62c8
DM		 452 { action => 'PARAM', proto => 'tcp', dport => '6566' },
453 ],
454 'SMB' => [
ebd54ae9 455 "Microsoft SMB traffic",
857f62c8
DM		 456 { action => 'PARAM', proto => 'udp', dport => '135,445' },
457 { action => 'PARAM', proto => 'udp', dport => '137:139' },
458 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
459 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
460 ],
857f62c8 461 'SMBswat' => [
ebd54ae9 462 "Samba Web Administration Tool",
857f62c8
DM		 463 { action => 'PARAM', proto => 'tcp', dport => '901' },
464 ],
465 'SMTP' => [
ebd54ae9 466 "Simple Mail Transfer Protocol",
857f62c8
DM		 467 { action => 'PARAM', proto => 'tcp', dport => '25' },
468 ],
469 'SMTPS' => [
ebd54ae9 470 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 471 { action => 'PARAM', proto => 'tcp', dport => '465' },
472 ],
473 'SNMP' => [
ebd54ae9 474 "Simple Network Management Protocol",
857f62c8
DM		 475 { action => 'PARAM', proto => 'udp', dport => '161:162' },
476 { action => 'PARAM', proto => 'tcp', dport => '161' },
477 ],
478 'SPAMD' => [
ebd54ae9 479 "Spam Assassin SPAMD traffic",
857f62c8
DM		 480 { action => 'PARAM', proto => 'tcp', dport => '783' },
481 ],
482 'SSH' => [
ebd54ae9 483 "Secure shell traffic",
857f62c8
DM		 484 { action => 'PARAM', proto => 'tcp', dport => '22' },
485 ],
486 'SVN' => [
ebd54ae9 487 "Subversion server (svnserve)",
857f62c8
DM		 488 { action => 'PARAM', proto => 'tcp', dport => '3690' },
489 ],
490 'SixXS' => [
ebd54ae9 491 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 492 { action => 'PARAM', proto => 'tcp', dport => '3874' },
493 { action => 'PARAM', proto => 'udp', dport => '3740' },
494 { action => 'PARAM', proto => '41' },
495 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
496 ],
497 'Squid' => [
ebd54ae9 498 "Squid web proxy traffic",
857f62c8
DM		 499 { action => 'PARAM', proto => 'tcp', dport => '3128' },
500 ],
501 'Submission' => [
ebd54ae9 502 "Mail message submission traffic",
857f62c8
DM		 503 { action => 'PARAM', proto => 'tcp', dport => '587' },
504 ],
505 'Syslog' => [
ebd54ae9 506 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 507 { action => 'PARAM', proto => 'udp', dport => '514' },
508 { action => 'PARAM', proto => 'tcp', dport => '514' },
509 ],
510 'TFTP' => [
ebd54ae9 511 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 512 { action => 'PARAM', proto => 'udp', dport => '69' },
513 ],
514 'Telnet' => [
ebd54ae9 515 "Telnet traffic",
857f62c8
DM		 516 { action => 'PARAM', proto => 'tcp', dport => '23' },
517 ],
518 'Telnets' => [
ebd54ae9 519 "Telnet over SSL",
857f62c8
DM		 520 { action => 'PARAM', proto => 'tcp', dport => '992' },
521 ],
522 'Time' => [
ebd54ae9 523 "RFC 868 Time protocol",
857f62c8
DM		 524 { action => 'PARAM', proto => 'tcp', dport => '37' },
525 ],
526 'Trcrt' => [
ebd54ae9 527 "Traceroute (for up to 30 hops) traffic",
857f62c8 528 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 529 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 530 ],
531 'VNC' => [
93be4333
DM		 532 "VNC traffic for VNC display's 0 - 99",
533 { action => 'PARAM', proto => 'tcp', dport => '5900:5999' },
857f62c8
DM		 534 ],
535 'VNCL' => [
ebd54ae9 536 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 537 { action => 'PARAM', proto => 'tcp', dport => '5500' },
538 ],
539 'Web' => [
ebd54ae9 540 "WWW traffic (HTTP and HTTPS)",
857f62c8 541 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 542 { action => 'PARAM', proto => 'tcp', dport => '443' },
543 ],
857f62c8 544 'Webcache' => [
ebd54ae9 545 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 546 { action => 'PARAM', proto => 'tcp', dport => '8080' },
547 ],
548 'Webmin' => [
ebd54ae9 549 "Webmin traffic",
857f62c8
DM		 550 { action => 'PARAM', proto => 'tcp', dport => '10000' },
551 ],
552 'Whois' => [
ebd54ae9 553 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 554 { action => 'PARAM', proto => 'tcp', dport => '43' },
555 ],
961b4928
DM		 556};
557
558my $pve_fw_parsed_macros;
ebd54ae9 559my $pve_fw_macro_descr;
21a18e53 560my $pve_fw_macro_ipversion = {};
961b4928 561my $pve_fw_preferred_macro_names = {};
3a616aa0 562
fe3d79b4
WB		 563my $FWACCEPTMARK_ON = "0x80000000/0x80000000";
564my $FWACCEPTMARK_OFF = "0x00000000/0x80000000";
565
5547adf7 566my $pve_std_chains = {};
cfd7cd9c
TW		 567my $pve_std_chains_conf = {};
568$pve_std_chains_conf->{4} = {
d8f2505e 569 'PVEFW-SET-ACCEPT-MARK' => [
044409e5 570 { target => "-j MARK --set-mark $FWACCEPTMARK_ON" },
d8f2505e 571 ],
79929d9c
DM		 572 'PVEFW-DropBroadcast' => [
573 # same as shorewall 'Broadcast'
574 # simply DROP BROADCAST/MULTICAST/ANYCAST
575 # we can use this to reduce logging
576 { action => 'DROP', dsttype => 'BROADCAST' },
577 { action => 'DROP', dsttype => 'MULTICAST' },
578 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 579 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 580 ],
581 'PVEFW-reject' => [
582 # same as shorewall 'reject'
583 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 584 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c 585 { action => 'DROP', proto => 'icmp' },
044409e5
TW		 586 { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' },
587 { match => '-p udp', target => '-j REJECT --reject-with icmp-port-unreachable' },
588 { match => '-p icmp', target => '-j REJECT --reject-with icmp-host-unreachable' },
589 { target => '-j REJECT --reject-with icmp-host-prohibited' },
79929d9c
DM		 590 ],
591 'PVEFW-Drop' => [
cbb5d6f3 592 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 593 # but REJECT/DROP some packages to reduce logging,
594 # and ACCEPT critical ICMP types
595 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
596 # we are not interested in BROADCAST/MULTICAST/ANYCAST
597 { action => 'PVEFW-DropBroadcast' },
598 # ACCEPT critical ICMP types
599 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
600 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
601 # Drop packets with INVALID state
044409e5 602 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
79929d9c 603 # Drop Microsoft SMB noise
e4882cff
TW		 604 { action => 'DROP', proto => 'udp', dport => '135,445' },
605 { action => 'DROP', proto => 'udp', dport => '137:139' },
79929d9c 606 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 607 { action => 'DROP', proto => 'tcp', dport => '135,139,445' },
79929d9c
DM		 608 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
609 # Drop new/NotSyn traffic so that it doesn't get logged
044409e5 610 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
79929d9c
DM		 611 # Drop DNS replies
612 { action => 'DROP', proto => 'udp', sport => 53 },
613 ],
614 'PVEFW-Reject' => [
cbb5d6f3 615 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 616 # but REJECT/DROP some packages to reduce logging,
617 # and ACCEPT critical ICMP types
618 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
619 # we are not interested in BROADCAST/MULTICAST/ANYCAST
620 { action => 'PVEFW-DropBroadcast' },
621 # ACCEPT critical ICMP types
622 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
623 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
624 # Drop packets with INVALID state
044409e5 625 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
79929d9c 626 # Drop Microsoft SMB noise
e4882cff 627 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' },
79929d9c
DM		 628 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
629 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 630 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' },
79929d9c
DM		 631 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
632 # Drop new/NotSyn traffic so that it doesn't get logged
044409e5 633 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
79929d9c
DM		 634 # Drop DNS replies
635 { action => 'DROP', proto => 'udp', sport => 53 },
636 ],
d86659ef
DM		 637 'PVEFW-tcpflags' => [
638 # same as shorewall tcpflags action.
639 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
044409e5
TW		 640 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
641 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
642 { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
643 { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' },
644 { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' },
d86659ef 645 ],
bee633ab
DM		 646 'PVEFW-smurfs' => [
647 # same as shorewall smurfs action
648 # Filter packets for smurfs (packets with a broadcast address as the source).
044409e5
TW		 649 { match => '-s 0.0.0.0/32', target => '-j RETURN' }, # allow DHCP
650 { match => '-m addrtype --src-type BROADCAST', target => '-g PVEFW-smurflog' },
651 { match => '-s 224.0.0.0/4', target => '-g PVEFW-smurflog' },
652 ],
653 'PVEFW-smurflog' => [
654 { action => 'DROP', logmsg => 'DROP: ' },
655 ],
656 'PVEFW-logflags' => [
657 { action => 'DROP', logmsg => 'DROP: ' },
bee633ab 658 ],
d8f2505e
DM		 659};
660
cfd7cd9c 661$pve_std_chains_conf->{6} = {
47a79ff2 662 'PVEFW-SET-ACCEPT-MARK' => [
044409e5 663 { target => "-j MARK --set-mark $FWACCEPTMARK_ON" },
47a79ff2
AD		 664 ],
665 'PVEFW-DropBroadcast' => [
044409e5
TW		 666 # same as shorewall 'Broadcast'
667 # simply DROP BROADCAST/MULTICAST/ANYCAST
668 # we can use this to reduce logging
669 #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
649cd835
DM		 670 # ipv6 addrtype does not work with kernel 2.6.32
671 #{ action => 'DROP', dsttype => 'MULTICAST' },
044409e5
TW		 672 #{ action => 'DROP', dsttype => 'ANYCAST' },
673 { action => 'DROP', dest => 'ff00::/8' },
674 #{ action => 'DROP', dest => '224.0.0.0/4' },
47a79ff2
AD		 675 ],
676 'PVEFW-reject' => [
649cd835 677 { action => 'DROP', proto => 'icmpv6' },
044409e5 678 { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' },
58ca8ec0
AD		 679 { match => '-p udp', target => '-j REJECT --reject-with icmp6-port-unreachable' },
680 { target => '-j REJECT --reject-with icmp6-adm-prohibited' },
47a79ff2
AD		 681 ],
682 'PVEFW-Drop' => [
044409e5
TW		 683 # same as shorewall 'Drop', which is equal to DROP,
684 # but REJECT/DROP some packages to reduce logging,
685 # and ACCEPT critical ICMP types
649cd835 686 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
044409e5
TW		 687 # we are not interested in BROADCAST/MULTICAST/ANYCAST
688 { action => 'PVEFW-DropBroadcast' },
689 # ACCEPT critical ICMP types
690 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
691 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
692 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
693 # Drop packets with INVALID state
694 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
695 # Drop Microsoft SMB noise
e4882cff 696 { action => 'DROP', proto => 'udp', dport => '135,445' },
649cd835
DM		 697 { action => 'DROP', proto => 'udp', dport => '137:139'},
698 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 699 { action => 'DROP', proto => 'tcp', dport => '135,139,445' },
649cd835 700 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
044409e5
TW		 701 # Drop new/NotSyn traffic so that it doesn't get logged
702 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
703 # Drop DNS replies
649cd835 704 { action => 'DROP', proto => 'udp', sport => 53 },
47a79ff2
AD		 705 ],
706 'PVEFW-Reject' => [
044409e5
TW		 707 # same as shorewall 'Reject', which is equal to Reject,
708 # but REJECT/DROP some packages to reduce logging,
709 # and ACCEPT critical ICMP types
710 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
711 # we are not interested in BROADCAST/MULTICAST/ANYCAST
712 { action => 'PVEFW-DropBroadcast' },
713 # ACCEPT critical ICMP types
714 { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' },
715 { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' },
716 { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' },
717 # Drop packets with INVALID state
718 { action => 'DROP', match => '-m conntrack --ctstate INVALID', },
719 # Drop Microsoft SMB noise
e4882cff
TW		 720 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' },
721 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139' },
044409e5 722 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
e4882cff 723 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' },
044409e5
TW		 724 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
725 # Drop new/NotSyn traffic so that it doesn't get logged
726 { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
727 # Drop DNS replies
728 { action => 'DROP', proto => 'udp', sport => 53 },
47a79ff2
AD		 729 ],
730 'PVEFW-tcpflags' => [
044409e5
TW		 731 # same as shorewall tcpflags action.
732 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
733 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
734 { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
735 { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
736 { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' },
737 { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' },
738 ],
739 'PVEFW-logflags' => [
740 { action => 'DROP', logmsg => 'DROP: ' },
47a79ff2 741 ],
47a79ff2
AD		 742};
743
4b586518
DM		 744# iptables -p icmp -h
745my $icmp_type_names = {
746 any => 1,
747 'echo-reply' => 1,
748 'destination-unreachable' => 1,
749 'network-unreachable' => 1,
750 'host-unreachable' => 1,
751 'protocol-unreachable' => 1,
752 'port-unreachable' => 1,
753 'fragmentation-needed' => 1,
754 'source-route-failed' => 1,
755 'network-unknown' => 1,
756 'host-unknown' => 1,
757 'network-prohibited' => 1,
758 'host-prohibited' => 1,
759 'TOS-network-unreachable' => 1,
760 'TOS-host-unreachable' => 1,
761 'communication-prohibited' => 1,
762 'host-precedence-violation' => 1,
763 'precedence-cutoff' => 1,
764 'source-quench' => 1,
765 'redirect' => 1,
766 'network-redirect' => 1,
767 'host-redirect' => 1,
768 'TOS-network-redirect' => 1,
769 'TOS-host-redirect' => 1,
770 'echo-request' => 1,
771 'router-advertisement' => 1,
772 'router-solicitation' => 1,
773 'time-exceeded' => 1,
774 'ttl-zero-during-transit' => 1,
775 'ttl-zero-during-reassembly' => 1,
776 'parameter-problem' => 1,
777 'ip-header-bad' => 1,
778 'required-option-missing' => 1,
779 'timestamp-request' => 1,
780 'timestamp-reply' => 1,
781 'address-mask-request' => 1,
782 'address-mask-reply' => 1,
783};
784
041b9277
DM		 785# ip6tables -p icmpv6 -h
786
787my $icmpv6_type_names = {
788 'any' => 1,
789 'destination-unreachable' => 1,
790 'no-route' => 1,
791 'communication-prohibited' => 1,
792 'address-unreachable' => 1,
793 'port-unreachable' => 1,
794 'packet-too-big' => 1,
795 'time-exceeded' => 1,
796 'ttl-zero-during-transit' => 1,
797 'ttl-zero-during-reassembly' => 1,
798 'parameter-problem' => 1,
799 'bad-header' => 1,
800 'unknown-header-type' => 1,
801 'unknown-option' => 1,
802 'echo-request' => 1,
803 'echo-reply' => 1,
804 'router-solicitation' => 1,
805 'router-advertisement' => 1,
593604cc 806 'neighbor-solicitation' => 1,
041b9277 807 'neighbour-solicitation' => 1,
593604cc 808 'neighbor-advertisement' => 1,
041b9277
DM		 809 'neighbour-advertisement' => 1,
810 'redirect' => 1,
811};
812
54cd19a8 813sub init_firewall_macros {
6158271d 814
961b4928 815 $pve_fw_parsed_macros = {};
9aab3127 816
21a18e53
WB		 817 my $parse = sub {
818 my ($k, $macro) = @_;
e5076eee 819 my $lc_name = lc($k);
21a18e53
WB		 820 $pve_fw_macro_ipversion->{$k} = 0;
821 while (!ref($macro->[0])) {
822 my $desc = shift @$macro;
823 if ($desc eq 'ipv4only') {
824 $pve_fw_macro_ipversion->{$k} = 4;
825 } elsif ($desc eq 'ipv6only') {
826 $pve_fw_macro_ipversion->{$k} = 6;
827 } else {
828 $pve_fw_macro_descr->{$k} = $desc;
829 }
ebd54ae9 830 }
e5076eee
DM		 831 $pve_fw_preferred_macro_names->{$lc_name} = $k;
832 $pve_fw_parsed_macros->{$k} = $macro;
21a18e53
WB		 833 };
834
835 foreach my $k (keys %$pve_fw_macros) {
836 &$parse($k, $pve_fw_macros->{$k});
837 }
838
839 foreach my $k (keys %$pve_ipv6fw_macros) {
840 next if $pve_fw_parsed_macros->{$k};
841 &$parse($k, $pve_ipv6fw_macros->{$k});
842 $pve_fw_macro_ipversion->{$k} = 6;
961b4928 843 }
9aab3127
DM		 844}
845
54cd19a8
DM		 846init_firewall_macros();
847
ebd54ae9
DM		 848sub get_macros {
849 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
850}
851
fcba0beb
DM		 852my $etc_services;
853
854sub get_etc_services {
855
856 return $etc_services if $etc_services;
857
858 my $filename = "/etc/services";
859
860 my $fh = IO::File->new($filename, O_RDONLY);
861 if (!$fh) {
862 warn "unable to read '$filename' - $!\n";
863 return {};
864 }
865
866 my $services = {};
867
868 while (my $line = <$fh>) {
869 chomp ($line);
870 next if $line =~m/^#/;
871 next if ($line =~m/^\s*$/);
872
d50f24ea 873 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp|sctp).*$!) {
fcba0beb 874 $services->{byid}->{$2}->{name} = $1;
35b66e9d 875 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 876 $services->{byid}->{$2}->{$3} = 1;
877 $services->{byname}->{$1} = $services->{byid}->{$2};
878 }
879 }
880
881 close($fh);
882
6158271d
DM		 883 $etc_services = $services;
884
3a616aa0 885
fcba0beb
DM		 886 return $etc_services;
887}
888
58bc569d
WB		 889sub parse_protocol_file {
890 my ($filename) = @_;
fcba0beb
DM		 891
892 my $fh = IO::File->new($filename, O_RDONLY);
893 if (!$fh) {
894 warn "unable to read '$filename' - $!\n";
895 return {};
896 }
897
898 my $protocols = {};
899
900 while (my $line = <$fh>) {
901 chomp ($line);
902 next if $line =~m/^#/;
903 next if ($line =~m/^\s*$/);
904
d6dd6e96 905 if ($line =~ m!^(\S+)\s+(\d+)(?:\s+.*)?$!) {
fcba0beb
DM		 906 $protocols->{byid}->{$2}->{name} = $1;
907 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
908 }
909 }
910
911 close($fh);
912
58bc569d
WB		 913 return $protocols;
914}
915
916my $etc_protocols;
917
918sub get_etc_protocols {
919 return $etc_protocols if $etc_protocols;
920
921 my $protocols = parse_protocol_file('/etc/protocols');
922
041b9277
DM		 923 # add special case for ICMP v6
924 $protocols->{byid}->{icmpv6}->{name} = "icmpv6";
925 $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6};
926
fcba0beb
DM		 927 $etc_protocols = $protocols;
928
929 return $etc_protocols;
930}
931
b452ea10
WB		 932my $etc_ethertypes;
933
934sub get_etc_ethertypes {
935 $etc_ethertypes = parse_protocol_file('/etc/ethertypes')
936 if !$etc_ethertypes;
937 return $etc_ethertypes;
938}
939
525778d7 940my $__local_network;
93be4333 941
525778d7 942sub local_network {
ac633d30 943 my ($new_value) = @_;
93be4333 944
525778d7 945 $__local_network = $new_value if defined($new_value);
ac633d30 946
525778d7 947 return $__local_network if defined($__local_network);
93be4333
DM		 948
949 eval {
950 my $nodename = PVE::INotify::nodename();
951
952 my $ip = PVE::Cluster::remote_node_ip($nodename);
953
954 my $testip = Net::IP->new($ip);
bfc488f6 955
5dc356af
WB		 956 my $isv6 = $testip->version == 6;
957 my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route()
958 : PVE::ProcFSTools::read_proc_net_route();
93be4333 959 foreach my $entry (@$routes) {
5dc356af
WB		 960 my $mask;
961 if ($isv6) {
962 $mask = $entry->{prefix};
15c80000 963 next if !$mask; # skip the default route...
5dc356af 964 } else {
2e1ae6b9 965 $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}};
5dc356af
WB		 966 next if !defined($mask);
967 }
93be4333
DM		 968 my $cidr = "$entry->{dest}/$mask";
969 my $testnet = Net::IP->new($cidr);
15c80000
WB		 970 my $overlap = $testnet->overlaps($testip);
971 if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP ||
972 $overlap == $Net::IP::IP_IDENTICAL)
973 {
525778d7 974 $__local_network = $cidr;
93be4333
DM		 975 return;
976 }
977 }
978 };
979 warn $@ if $@;
980
525778d7 981 return $__local_network;
93be4333
DM		 982}
983
6d959e3f 984# ipset names are limited to 31 characters,
75a12a9d
TL		 985# and we use '-v4' or '-v6' to indicate IP versions,
986# and we use '_swap' suffix for atomic update,
6d959e3f 987# for example PVEFW-${VMID}-${ipset_name}_swap
30150dca 988
88c26d5e 989my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
708ba714
DM		 990
991sub compute_ipset_chain_name {
88c26d5e 992 my ($vmid, $ipset_name, $ipversion) = @_;
708ba714
DM		 993
994 $vmid = 0 if !defined($vmid);
995
88c26d5e 996 my $id = "$vmid-${ipset_name}-v$ipversion";
708ba714 997
88c26d5e 998 if (length($id) > $max_iptables_ipset_name_length) {
708ba714
DM		 999 $id = PVE::Tools::fnv31a_hex($id);
1000 }
1001
1002 return "PVEFW-$id";
1003}
1004
b692f42c
DM		 1005sub compute_ipfilter_ipset_name {
1006 my ($iface) = @_;
1007
1008 return "ipfilter-$iface";
1009}
1010
ecbea048
DM		 1011sub parse_address_list {
1012 my ($str) = @_;
1013
e2c62733
DM		 1014 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
1015 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
1016 return;
1017 }
1018
1019 if ($str =~ m/^${ip_alias_pattern}$/) {
1020 die "alias name too long\n" if length($str) > $max_alias_name_length;
1021 return;
1022 }
d72beb8e 1023
3162af6b
DM		 1024 my $count = 0;
1025 my $iprange = 0;
a589b6ac 1026 my $ipversion;
7697c041 1027
55b47371
WB		 1028 my @elements = split(/,/, $str);
1029 die "extraneous commas in list\n" if $str ne join(',', @elements);
1030 foreach my $elem (@elements) {
3162af6b 1031 $count++;
c344e509
DM		 1032 my $ip = Net::IP->new($elem);
1033 if (!$ip) {
ecbea048
DM		 1034 my $err = Net::IP::Error();
1035 die "invalid IP address: $err\n";
1036 }
3162af6b 1037 $iprange = 1 if $elem =~ m/-/;
a589b6ac 1038
c344e509 1039 my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4;
a589b6ac
DM		 1040
1041 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
006490cb 1042 if $ipversion && ($new_ipversion != $ipversion);
a589b6ac
DM		 1043
1044 $ipversion = $new_ipversion;
ecbea048 1045 }
e34d0e58 1046
5163367b 1047 die "you can't use a range in a list\n" if $iprange && $count > 1;
a589b6ac 1048
7697c041 1049 return $ipversion;
ecbea048 1050}
dddd9413 1051
fcba0beb 1052sub parse_port_name_number_or_range {
a1c04f71 1053 my ($str, $dport) = @_;
fcba0beb
DM		 1054
1055 my $services = PVE::Firewall::get_etc_services();
7ca36671 1056 my $count = 0;
041b7e8e
DM		 1057 my $icmp_port = 0;
1058
55b47371
WB		 1059 my @elements = split(/,/, $str);
1060 die "extraneous commas in list\n" if $str ne join(',', @elements);
1061 foreach my $item (@elements) {
aced7e7d 1062 if ($item =~ m/^([0-9]+):([0-9]+)$/) {
6a241ca7 1063 $count += 2;
7ca36671
DM		 1064 my ($port1, $port2) = ($1, $2);
1065 die "invalid port '$port1'\n" if $port1 > 65535;
1066 die "invalid port '$port2'\n" if $port2 > 65535;
12be0dfe 1067 die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2;
aced7e7d 1068 } elsif ($item =~ m/^([0-9]+)$/) {
6a241ca7 1069 $count += 1;
7ca36671
DM		 1070 my $port = $1;
1071 die "invalid port '$port'\n" if $port > 65535;
1072 } else {
a1c04f71 1073 if ($dport && $icmp_type_names->{$item}) {
041b7e8e 1074 $icmp_port = 1;
a1c04f71 1075 } elsif ($dport && $icmpv6_type_names->{$item}) {
041b9277 1076 $icmp_port = 1;
041b7e8e 1077 } else {
e34d0e58 1078 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 1079 }
fcba0beb
DM		 1080 }
1081 }
1082
6a241ca7
WB		 1083 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 0;
1084
1085 # I really don't like to use the word number here, but it's the only thing
1086 # that makes sense in a literal way. The range 1:100 counts as 2, not as
1087 # one and not as 100...
1088 die "too many entries in port list (> 15 numbers)\n"
1089 if $count > 15;
041b7e8e 1090
f776d6de 1091 return (scalar(@elements) > 1);
fcba0beb
DM		 1092}
1093
a1c04f71
WB		 1094PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec);
1095sub pve_fw_verify_sport_spec {
1096 my ($portstr) = @_;
1097
1098 parse_port_name_number_or_range($portstr, 0);
1099
1100 return $portstr;
1101}
1102
1103PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec);
1104sub pve_fw_verify_dport_spec {
54cd19a8
DM		 1105 my ($portstr) = @_;
1106
a1c04f71 1107 parse_port_name_number_or_range($portstr, 1);
54cd19a8
DM		 1108
1109 return $portstr;
1110}
1111
d31689ee
DM		 1112PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
1113sub pve_fw_verify_addr_spec {
54cd19a8
DM		 1114 my ($list) = @_;
1115
1116 parse_address_list($list);
1117
1118 return $list;
1119}
1120
1121PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
1122sub pve_fw_verify_protocol_spec {
1123 my ($proto) = @_;
1124
1125 my $protocols = get_etc_protocols();
1126
1127 die "unknown protocol '$proto'\n" if $proto &&
1128 !(defined($protocols->{byname}->{$proto}) ||
1129 defined($protocols->{byid}->{$proto}));
1130
1131 return $proto;
1132}
1133
1134
d1c53b3e 1135# helper function for API
d1c53b3e 1136
5d38d64f
DM		 1137sub copy_opject_with_digest {
1138 my ($object) = @_;
1139
1140 my $sha = Digest::SHA->new('sha1');
1141
1142 my $res = {};
1143 foreach my $k (sort keys %$object) {
1144 my $v = $object->{$k};
0365eb68 1145 next if !defined($v);
5d38d64f
DM		 1146 $res->{$k} = $v;
1147 $sha->add($k, ':', $v, "\n");
1148 }
1149
55e686c7 1150 my $digest = $sha->hexdigest;
5d38d64f
DM		 1151
1152 $res->{digest} = $digest;
1153
1154 return wantarray ? ($res, $digest) : $res;
1155}
1156
1157sub copy_list_with_digest {
1158 my ($list) = @_;
1159
1160 my $sha = Digest::SHA->new('sha1');
1161
1162 my $res = [];
1163 foreach my $entry (@$list) {
1164 my $data = {};
1165 foreach my $k (sort keys %$entry) {
1166 my $v = $entry->{$k};
0365eb68 1167 next if !defined($v);
5d38d64f 1168 $data->{$k} = $v;
6d9246e7 1169 # Note: digest ignores refs ($rule->{errors})
e83f0d00
DC		 1170 # since Digest::SHA expects a series of bytes,
1171 # we have to encode the value here to prevent errors when
1172 # using utf8 characters (eg. in comments)
1173 $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ;
5d38d64f
DM		 1174 }
1175 push @$res, $data;
1176 }
1177
55e686c7 1178 my $digest = $sha->hexdigest;
5d38d64f
DM		 1179
1180 foreach my $entry (@$res) {
1181 $entry->{digest} = $digest;
1182 }
1183
1184 return wantarray ? ($res, $digest) : $res;
1185}
1186
e313afe0
DM		 1187our $cluster_option_properties = {
1188 enable => {
1189 description => "Enable or disable the firewall cluster wide.",
1190 type => 'integer',
1191 minimum => 0,
1192 optional => 1,
1193 },
2549e7ef
SI		 1194 ebtables => {
1195 description => "Enable ebtables rules cluster wide.",
1196 type => 'boolean',
1197 default => 1,
1198 optional => 1,
1199 },
e313afe0
DM		 1200 policy_in => {
1201 description => "Input policy.",
1202 type => 'string',
1203 optional => 1,
1204 enum => ['ACCEPT', 'REJECT', 'DROP'],
1205 },
1206 policy_out => {
1207 description => "Output policy.",
1208 type => 'string',
1209 optional => 1,
1210 enum => ['ACCEPT', 'REJECT', 'DROP'],
1211 },
cc37e000
TL		 1212 log_ratelimit => {
1213 description => "Log ratelimiting settings",
1214 type => 'string', format => {
1215 enable => {
1216 default_key => 1,
1217 description => 'Enable or disable log rate limiting',
1218 type => 'boolean',
1219 default => '1',
1220 },
1221 rate => {
1222 type => 'string',
1223 description => 'Frequency with which the burst bucket gets refilled',
1224 optional => 1,
1225 pattern => '[1-9][0-9]*\/(second|minute|hour|day)',
1226 format_description => 'rate',
1227 default => '1/second',
1228 },
1229 burst => {
1230 type => 'integer',
1231 minimum => 0,
1232 optional => 1,
1233 description => 'Inital burst of packages which will get logged',
1234 default => 5,
1235 },
1236 },
1237 optional => 1,
1238 },
e313afe0
DM		 1239};
1240
1241our $host_option_properties = {
1242 enable => {
1243 description => "Enable host firewall rules.",
1244 type => 'boolean',
1245 optional => 1,
1246 },
1247 log_level_in => get_standard_option('pve-fw-loglevel', {
1248 description => "Log level for incoming traffic." }),
1249 log_level_out => get_standard_option('pve-fw-loglevel', {
1250 description => "Log level for outgoing traffic." }),
1251 tcp_flags_log_level => get_standard_option('pve-fw-loglevel', {
1252 description => "Log level for illegal tcp flags filter." }),
1253 smurf_log_level => get_standard_option('pve-fw-loglevel', {
1254 description => "Log level for SMURFS filter." }),
1255 nosmurfs => {
1256 description => "Enable SMURFS filter.",
1257 type => 'boolean',
1258 optional => 1,
1259 },
1260 tcpflags => {
1261 description => "Filter illegal combinations of TCP flags.",
1262 type => 'boolean',
e1639957 1263 default => 0,
e313afe0
DM		 1264 optional => 1,
1265 },
1266 nf_conntrack_max => {
1267 description => "Maximum number of tracked connections.",
1268 type => 'integer',
1269 optional => 1,
b2ec31cc 1270 default => 262144,
e313afe0
DM		 1271 minimum => 32768,
1272 },
1273 nf_conntrack_tcp_timeout_established => {
1274 description => "Conntrack established timeout.",
1275 type => 'integer',
1276 optional => 1,
e1639957 1277 default => 432000,
e313afe0
DM		 1278 minimum => 7875,
1279 },
ac5dd88e
AD		 1280 nf_conntrack_tcp_timeout_syn_recv => {
1281 description => "Conntrack syn recv timeout.",
1282 type => 'integer',
1283 optional => 1,
1284 default => 60,
1285 minimum => 30,
1286 maximum => 60,
1287 },
e313afe0 1288 ndp => {
e1639957 1289 description => "Enable NDP (Neighbor Discovery Protocol).",
e313afe0 1290 type => 'boolean',
e1639957 1291 default => 0,
e313afe0
DM		 1292 optional => 1,
1293 },
27c49e25
CE		 1294 nf_conntrack_allow_invalid => {
1295 description => "Allow invalid packets on connection tracking.",
1296 type => 'boolean',
1297 default => 0,
1298 optional => 1,
1299 },
ac5dd88e
AD		 1300 protection_synflood => {
1301 description => "Enable synflood protection",
1302 type => 'boolean',
1303 default => 0,
1304 optional => 1,
1305 },
1306 protection_synflood_rate => {
1307 description => "Synflood protection rate syn/sec by ip src.",
1308 type => 'integer',
1309 optional => 1,
1310 default => 200,
1311 },
1312 protection_synflood_burst => {
1313 description => "Synflood protection rate burst by ip src.",
1314 type => 'integer',
1315 optional => 1,
1316 default => 1000,
1317 },
e17d3eec
ML		 1318 log_nf_conntrack => {
1319 description => "Enable logging of conntrack information.",
1320 type => 'boolean',
1321 default => 0,
1322 optional => 1
1323 },
e313afe0
DM		 1324};
1325
1326our $vm_option_properties = {
1327 enable => {
1328 description => "Enable/disable firewall rules.",
1329 type => 'boolean',
e1639957 1330 default => 0,
e313afe0
DM		 1331 optional => 1,
1332 },
1333 macfilter => {
1334 description => "Enable/disable MAC address filter.",
1335 type => 'boolean',
e1639957 1336 default => 0,
e313afe0
DM		 1337 optional => 1,
1338 },
1339 dhcp => {
1340 description => "Enable DHCP.",
1341 type => 'boolean',
e1639957 1342 default => 0,
e313afe0
DM		 1343 optional => 1,
1344 },
1345 ndp => {
e1639957 1346 description => "Enable NDP (Neighbor Discovery Protocol).",
e313afe0 1347 type => 'boolean',
e1639957 1348 default => 0,
e313afe0
DM		 1349 optional => 1,
1350 },
1351 radv => {
1352 description => "Allow sending Router Advertisement.",
1353 type => 'boolean',
1354 optional => 1,
1355 },
1356 ipfilter => {
1357 description => "Enable default IP filters. " .
1358 "This is equivalent to adding an empty ipfilter-net<id> ipset " .
1359 "for every interface. Such ipsets implicitly contain sane default " .
1360 "restrictions such as restricting IPv6 link local addresses to " .
1361 "the one derived from the interface's MAC address. For containers " .
1362 "the configured IP addresses will be implicitly added.",
1363 type => 'boolean',
1364 optional => 1,
1365 },
1366 policy_in => {
1367 description => "Input policy.",
1368 type => 'string',
1369 optional => 1,
1370 enum => ['ACCEPT', 'REJECT', 'DROP'],
1371 },
1372 policy_out => {
1373 description => "Output policy.",
1374 type => 'string',
1375 optional => 1,
1376 enum => ['ACCEPT', 'REJECT', 'DROP'],
1377 },
1378 log_level_in => get_standard_option('pve-fw-loglevel', {
1379 description => "Log level for incoming traffic." }),
1380 log_level_out => get_standard_option('pve-fw-loglevel', {
1381 description => "Log level for outgoing traffic." }),
1382
1383};
1384
fb060a52 1385
7a332151 1386my $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 1387
7a332151 1388my $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 1389
9c7e0858
DM		 1390my $rule_properties = {
1391 pos => {
1392 description => "Update rule at position <pos>.",
1393 type => 'integer',
1394 minimum => 0,
1395 optional => 1,
1396 },
c71e785f 1397 digest => get_standard_option('pve-config-digest'),
9c7e0858 1398 type => {
e50429af 1399 description => "Rule type.",
9c7e0858
DM		 1400 type => 'string',
1401 optional => 1,
1402 enum => ['in', 'out', 'group'],
1403 },
1404 action => {
c14dacdf 1405 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 1406 type => 'string',
1407 optional => 1,
44be8ceb 1408 pattern => $security_group_name_pattern,
c14dacdf
DM		 1409 maxLength => 20,
1410 minLength => 2,
9c7e0858 1411 },
e5076eee 1412 macro => {
e50429af 1413 description => "Use predefined standard macro.",
e5076eee
DM		 1414 type => 'string',
1415 optional => 1,
54cd19a8 1416 maxLength => 128,
e5076eee 1417 },
fb060a52 1418 iface => get_standard_option('pve-iface', {
7ccaa5f1 1419 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		 1420 optional => 1
1421 }),
9c7e0858 1422 source => {
fb060a52 1423 description => "Restrict packet source address. $addr_list_descr",
d31689ee 1424 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1425 optional => 1,
1426 },
1427 dest => {
fb060a52 1428 description => "Restrict packet destination address. $addr_list_descr",
d31689ee 1429 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1430 optional => 1,
1431 },
1432 proto => {
fb060a52 1433 description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.",
54cd19a8 1434 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 1435 optional => 1,
1436 },
1437 enable => {
e50429af 1438 description => "Flag to enable/disable a rule.",
72d055fc
AG		 1439 type => 'integer',
1440 minimum => 0,
9c7e0858
DM		 1441 optional => 1,
1442 },
3489f8a2
CE		 1443 log => get_standard_option('pve-fw-loglevel', {
1444 description => "Log level for firewall rule.",
1445 }),
9c7e0858 1446 sport => {
fb060a52 1447 description => "Restrict TCP/UDP source port. $port_descr",
a1c04f71 1448 type => 'string', format => 'pve-fw-sport-spec',
9c7e0858
DM		 1449 optional => 1,
1450 },
1451 dport => {
fb060a52 1452 description => "Restrict TCP/UDP destination port. $port_descr",
a1c04f71 1453 type => 'string', format => 'pve-fw-dport-spec',
9c7e0858
DM		 1454 optional => 1,
1455 },
1456 comment => {
e50429af 1457 description => "Descriptive comment.",
9c7e0858
DM		 1458 type => 'string',
1459 optional => 1,
1460 },
1461};
1462
1463sub add_rule_properties {
1464 my ($properties) = @_;
1465
1466 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 1467 my $h = $rule_properties->{$k};
1468 # copy data, so that we can modify later without side effects
1469 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 1470 }
cbb5d6f3 1471
9c7e0858
DM		 1472 return $properties;
1473}
1474
5b7974df
DM		 1475sub delete_rule_properties {
1476 my ($rule, $delete_str) = @_;
e34d0e58 1477
5b7974df
DM		 1478 foreach my $opt (PVE::Tools::split_list($delete_str)) {
1479 raise_param_exc({ 'delete' => "no such property ('$opt')"})
1480 if !defined($rule_properties->{$opt});
1481 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
1482 if $opt eq 'type' || $opt eq 'action';
1483 delete $rule->{$opt};
1484 }
1485
1486 return $rule;
1487}
1488
9a2745a0 1489my $apply_macro = sub {
35d1d6da 1490 my ($macro_name, $param, $verify, $ipversion) = @_;
9a2745a0
DM		 1491
1492 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1493 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1494
35d1d6da
DM		 1495 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1496 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1497 }
1498
21a18e53 1499 # skip macros which are specific to another ipversion
ff5d050e
AG		 1500 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1501 return if $ipversion != $required;
1502 }
21a18e53 1503
9a2745a0
DM		 1504 my $rules = [];
1505
1506 foreach my $templ (@$macro_rules) {
1507 my $rule = {};
1508 my $param_used = {};
1509 foreach my $k (keys %$templ) {
1510 my $v = $templ->{$k};
1511 if ($v eq 'PARAM') {
1512 $v = $param->{$k};
1513 $param_used->{$k} = 1;
1514 } elsif ($v eq 'DEST') {
1515 $v = $param->{dest};
1516 $param_used->{dest} = 1;
1517 } elsif ($v eq 'SOURCE') {
1518 $v = $param->{source};
1519 $param_used->{source} = 1;
1520 }
1521
1522 if (!defined($v)) {
1523 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1524 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1525 die "$msg\n";
1526 }
1527 $rule->{$k} = $v;
1528 }
1529 foreach my $k (keys %$param) {
1530 next if $k eq 'macro';
1531 next if !defined($param->{$k});
1532 next if $param_used->{$k};
1533 if (defined($rule->{$k})) {
1534 if ($rule->{$k} ne $param->{$k}) {
1535 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1536 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1537 die "$msg\n";
1538 }
1539 } else {
1540 $rule->{$k} = $param->{$k};
1541 }
1542 }
1543 push @$rules, $rule;
1544 }
1545
1546 return $rules;
1547};
1548
b6b8e6ad
DM		 1549my $rule_env_iface_lookup = {
1550 'ct' => 1,
1551 'vm' => 1,
1552 'group' => 0,
1553 'cluster' => 1,
1554 'host' => 1,
1555};
1556
7ca36671 1557sub verify_rule {
a523e057 1558 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1559
1560 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1561
b6b8e6ad
DM		 1562 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1563 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1564
a523e057
DM		 1565 my $errors = $rule->{errors} || {};
1566
6d9246e7 1567 my $error_count = 0;
7ca36671 1568
6d9246e7
DM		 1569 my $add_error = sub {
1570 my ($param, $msg) = @_;
d4cda423 1571 chomp $msg;
6d9246e7
DM		 1572 raise_param_exc({ $param => $msg }) if !$noerr;
1573 $error_count++;
1574 $errors->{$param} = $msg if !$errors->{$param};
1575 };
1576
eea9d2a1
DM		 1577 my $ipversion;
1578 my $set_ip_version = sub {
1579 my $vers = shift;
1580 if ($vers) {
1581 die "detected mixed ipv4/ipv6 adresses in rule\n"
1582 if $ipversion && ($vers != $ipversion);
1583 $ipversion = $vers;
1584 }
1585 };
1586
a523e057 1587 my $check_ipset_or_alias_property = sub {
ae029a88 1588 my ($name, $expected_ipversion) = @_;
a523e057
DM		 1589
1590 if (my $value = $rule->{$name}) {
1591 if ($value =~ m/^\+/) {
4dfe04e6 1592 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1593 &$add_error($name, "no such ipset '$1'")
a523e057 1594 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1595
a523e057 1596 } else {
351052d1 1597 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1598 }
1599 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1600 my $alias = lc($value);
bfc488f6 1601 &$add_error($name, "no such alias '$value'")
70e524eb 1602 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
04f5088f 1603 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
70e524eb
AD		 1604 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1605
eea9d2a1 1606 &$set_ip_version($e->{ipversion});
a523e057
DM		 1607 }
1608 }
1609 };
1610
6d9246e7
DM		 1611 my $type = $rule->{type};
1612 my $action = $rule->{action};
bfc488f6 1613
6d9246e7
DM		 1614 &$add_error('type', "missing property") if !$type;
1615 &$add_error('action', "missing property") if !$action;
1616
1617 if ($type) {
1618 if ($type eq 'in' || $type eq 'out') {
1619 &$add_error('action', "unknown action '$action'")
1620 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1621 } elsif ($type eq 'group') {
1622 &$add_error('type', "security groups not allowed")
1623 if !$allow_groups;
1624 &$add_error('action', "invalid characters in security group name")
1625 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1626 } else {
1627 &$add_error('type', "unknown rule type '$type'");
1628 }
7ca36671 1629 }
e34d0e58 1630
dba740a9 1631 if ($rule->{iface}) {
bfc488f6 1632 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1633 if !$allow_iface;
dba740a9 1634 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1635 &$add_error('iface', $@) if $@;
fdefeeab 1636 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
b6b8e6ad
DM		 1637 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1638 if $rule->{iface} !~ m/^net(\d+)$/;
b6b8e6ad
DM		 1639 }
1640 }
7ca36671
DM		 1641
1642 if ($rule->{macro}) {
6d9246e7
DM		 1643 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1644 $rule->{macro} = $preferred_name;
1645 } else {
1646 &$add_error('macro', "unknown macro '$rule->{macro}'");
1647 }
1648 }
1649
1650 if ($rule->{proto}) {
1651 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1652 &$add_error('proto', $@) if $@;
041b9277
DM		 1653 &$set_ip_version(4) if $rule->{proto} eq 'icmp';
1654 &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
6d9246e7 1655 }
7ca36671
DM		 1656
1657 if ($rule->{dport}) {
a1c04f71 1658 eval { parse_port_name_number_or_range($rule->{dport}, 1); };
6d9246e7 1659 &$add_error('dport', $@) if $@;
48e3963e 1660 my $proto = $rule->{proto};
6d9246e7 1661 &$add_error('proto', "missing property - 'dport' requires this property")
48e3963e
WB		 1662 if !$proto;
1663 &$add_error('dport', "protocol '$proto' does not support ports")
1664 if !$PROTOCOLS_WITH_PORTS->{$proto} &&
1665 $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
6d9246e7 1666 }
7ca36671
DM		 1667
1668 if ($rule->{sport}) {
a1c04f71 1669 eval { parse_port_name_number_or_range($rule->{sport}, 0); };
6d9246e7 1670 &$add_error('sport', $@) if $@;
48e3963e 1671 my $proto = $rule->{proto};
6d9246e7 1672 &$add_error('proto', "missing property - 'sport' requires this property")
48e3963e
WB		 1673 if !$proto;
1674 &$add_error('sport', "protocol '$proto' does not support ports")
1675 if !$PROTOCOLS_WITH_PORTS->{$proto};
7ca36671
DM		 1676 }
1677
1678 if ($rule->{source}) {
75a12a9d 1679 eval {
041b9277
DM		 1680 my $source_ipversion = parse_address_list($rule->{source});
1681 &$set_ip_version($source_ipversion);
1682 };
6d9246e7 1683 &$add_error('source', $@) if $@;
ae029a88 1684 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM		 1685 }
1686
1687 if ($rule->{dest}) {
75a12a9d
TL		 1688 eval {
1689 my $dest_ipversion = parse_address_list($rule->{dest});
041b9277 1690 &$set_ip_version($dest_ipversion);
9e2205e5 1691 };
6d9246e7 1692 &$add_error('dest', $@) if $@;
ae029a88 1693 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM		 1694 }
1695
35d1d6da
DM		 1696 $rule->{ipversion} = $ipversion if $ipversion;
1697
a523e057 1698 if ($rule->{macro} && !$error_count) {
35d1d6da 1699 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
6d9246e7
DM		 1700 if (my $err = $@) {
1701 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1702 my $eh = $err->{errors};
1703 foreach my $p (keys %$eh) {
1704 &$add_error($p, $eh->{$p});
1705 }
1706 } else {
1707 &$add_error('macro', "$err");
1708 }
1709 }
9a2745a0
DM		 1710 }
1711
6d9246e7
DM		 1712 $rule->{errors} = $errors if $error_count;
1713
7ca36671
DM		 1714 return $rule;
1715}
1716
9c7e0858
DM		 1717sub copy_rule_data {
1718 my ($rule, $param) = @_;
1719
1720 foreach my $k (keys %$rule_properties) {
1721 if (defined(my $v = $param->{$k})) {
1722 if ($v eq '' || $v eq '-') {
1723 delete $rule->{$k};
1724 } else {
1725 $rule->{$k} = $v;
1726 }
9c7e0858
DM		 1727 }
1728 }
7ca36671 1729
9c7e0858
DM		 1730 return $rule;
1731}
1732
9f6845cf
DM		 1733sub rules_modify_permissions {
1734 my ($rule_env) = @_;
1735
1736 if ($rule_env eq 'host') {
1737 return {
1738 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1739 };
1740 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1741 return {
1742 check => ['perm', '/', [ 'Sys.Modify' ]],
1743 };
3b4882dc 1744 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1745 return {
1746 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1747 }
1748 }
1749
1750 return undef;
1751}
1752
1753sub rules_audit_permissions {
1754 my ($rule_env) = @_;
1755
1756 if ($rule_env eq 'host') {
1757 return {
1758 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1759 };
1760 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1761 return {
1762 check => ['perm', '/', [ 'Sys.Audit' ]],
1763 };
3b4882dc 1764 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1765 return {
1766 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1767 }
1768 }
1769
1770 return undef;
1771}
1772
9c7e0858 1773# core functions
780bcc0f
DM		 1774my $bridge_firewall_enabled = 0;
1775
1776sub enable_bridge_firewall {
1777
1778 return if $bridge_firewall_enabled; # only once
1779
5f0a912c
DM		 1780 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1781 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1782
6a8a75db
DM		 1783 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1784 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1785
780bcc0f
DM		 1786 $bridge_firewall_enabled = 1;
1787}
1788
b16e818e 1789sub iptables_restore_cmdlist {
64e0adf4 1790 my ($cmdlist, $table) = @_;
3a616aa0 1791
64e0adf4
AD		 1792 $table = 'filter' if !$table;
1793 run_command(['iptables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
3a616aa0
AD		 1794}
1795
17da5c0f 1796sub ip6tables_restore_cmdlist {
64e0adf4 1797 my ($cmdlist, $table) = @_;
17da5c0f 1798
64e0adf4
AD		 1799 $table = 'filter' if !$table;
1800 run_command(['ip6tables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
17da5c0f
AD		 1801}
1802
34cdedfa
AD		 1803sub ipset_restore_cmdlist {
1804 my ($cmdlist) = @_;
1805
bb6ebf3b 1806 run_command(['ipset', 'restore'], input => $cmdlist, errmsg => "ipset_restore_cmdlist");
34cdedfa
AD		 1807}
1808
151c209e
AD		 1809sub ebtables_restore_cmdlist {
1810 my ($cmdlist) = @_;
1811
c1031ab1 1812 run_command(['ebtables-restore'], input => $cmdlist, errmsg => "ebtables_restore_cmdlist");
151c209e
AD		 1813}
1814
de2a57cd 1815sub iptables_get_chains {
64e0adf4 1816 my ($iptablescmd, $t) = @_;
17da5c0f
AD		 1817
1818 $iptablescmd = "iptables" if !$iptablescmd;
64e0adf4 1819 $t = 'filter' if !$t;
de2a57cd
DM		 1820
1821 my $res = {};
1822
1823 # check what chains we want to track
1824 my $is_pvefw_chain = sub {
1825 my $name = shift;
1826
dec84fcd
DM		 1827 return 1 if $name =~ m/^PVEFW-\S+$/;
1828
a3ded5cd 1829 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
954f24b1 1830
a3ded5cd 1831 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
954f24b1 1832
a3ded5cd 1833 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
a89dfcc6 1834 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
de2a57cd
DM		 1835
1836 return undef;
1837 };
1838
1839 my $table = '';
1840
c4a2e5ae
DM		 1841 my $hooks = {};
1842
de2a57cd
DM		 1843 my $parser = sub {
1844 my $line = shift;
1845
1846 return if $line =~ m/^#/;
1847 return if $line =~ m/^\s*$/;
1848
1849 if ($line =~ m/^\*(\S+)$/) {
1850 $table = $1;
1851 return;
1852 }
1853
64e0adf4 1854 return if $table ne $t;
de2a57cd
DM		 1855
1856 if ($line =~ m/^:(\S+)\s/) {
1857 my $chain = $1;
1858 return if !&$is_pvefw_chain($chain);
3fa83edf 1859 $res->{$chain} = "unknown";
09d5f68e 1860 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1861 my ($chain, $sig) = ($1, $2);
de2a57cd 1862 return if !&$is_pvefw_chain($chain);
3fa83edf 1863 $res->{$chain} = $sig;
64e0adf4 1864 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD|PREROUTING)\s+-j\s+PVEFW-\1$/) {
c4a2e5ae 1865 $hooks->{$1} = 1;
de2a57cd
DM		 1866 } else {
1867 # simply ignore the rest
1868 return;
1869 }
1870 };
1871
c1031ab1 1872 run_command(["$iptablescmd-save"], outfunc => $parser);
de2a57cd 1873
c4a2e5ae 1874 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1875}
1876
9bf7d929
DM		 1877sub iptables_chain_digest {
1878 my ($rules) = @_;
1879 my $digest = Digest::SHA->new('sha1');
1880 foreach my $rule (@$rules) { # order is important
1881 $digest->add($rule);
1882 }
1883 return $digest->b64digest;
1884}
1885
3f95d14a
DM		 1886sub ipset_chain_digest {
1887 my ($rules) = @_;
4bd0a9c4 1888
3f95d14a
DM		 1889 my $digest = Digest::SHA->new('sha1');
1890 foreach my $rule (sort @$rules) { # note: sorted
1891 $digest->add($rule);
1892 }
1893 return $digest->b64digest;
1894}
1895
34cdedfa
AD		 1896sub ipset_get_chains {
1897
1898 my $res = {};
1899 my $chains = {};
1900
1901 my $parser = sub {
1902 my $line = shift;
1903
1904 return if $line =~ m/^#/;
1905 return if $line =~ m/^\s*$/;
4b96e877 1906 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1907 my $chain = $1;
1908 $line =~ s/\s+$//; # delete trailing white space
1909 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1910 } else {
1911 # simply ignore the rest
1912 return;
1913 }
1914 };
1915
c1031ab1 1916 run_command(['ipset', 'save'], outfunc => $parser);
34cdedfa 1917
3f95d14a
DM		 1918 # compute digest for each chain
1919 foreach my $chain (keys %$chains) {
1920 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1921 }
1922
1923 return $res;
1924}
1925
151c209e
AD		 1926sub ebtables_get_chains {
1927
1928 my $res = {};
1929 my $chains = {};
151c209e
AD		 1930 my $parser = sub {
1931 my $line = shift;
1932 return if $line =~ m/^#/;
1933 return if $line =~ m/^\s*$/;
fc1f1de9
WB		 1934 if ($line =~ m/^:(\S+)\s\S+$/) {
1935 # Make sure we know chains exist even if they're empty.
1936 $chains->{$1} //= [];
84025e99 1937 } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) {
151c209e
AD		 1938 my $chain = $1;
1939 $line =~ s/\s+$//;
1940 push @{$chains->{$chain}}, $line;
1941 } else {
1942 # simply ignore the rest
1943 return;
1944 }
1945 };
1946
c1031ab1 1947 run_command(['ebtables-save'], outfunc => $parser);
84025e99 1948 # compute digest for each chain and store rules as well
151c209e 1949 foreach my $chain (keys %$chains) {
84025e99
SI		 1950 $res->{$chain}->{rules} = $chains->{$chain};
1951 $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain});
151c209e
AD		 1952 }
1953 return $res;
1954}
1955
180da76c
TW		 1956# substitude action of rule according to action hash
1957sub rule_substitude_action {
1958 my ($rule, $actions) = @_;
1959
1960 if (my $action = $rule->{action}) {
1961 $rule->{action} = $actions->{$action} if defined($actions->{$action});
1962 }
1963}
1964
a44cb745
TW		 1965# generate a src or dst match
1966# $dir(ection) is either d or s
1967sub ipt_gen_src_or_dst_match {
1968 my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_;
1969
1970 my $srcdst;
1971 if ($dir eq 's') {
1972 $srcdst = "src";
1973 } elsif ($dir eq 'd') {
1974 $srcdst = "dst";
1975 } else {
1976 die "ipt_gen_src_or_dst_match: invalid direction $dir \n";
1977 }
1978
1979 my $match;
1980 if ($adr =~ m/^\+/) {
1981 if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
1982 my $name = $1;
1983 my $ipset_chain;
1984 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
1985 $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
1986 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
1987 $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
1988 } else {
1989 die "no such ipset '$name'\n";
1990 }
1991 $match = "-m set --match-set ${ipset_chain} ${srcdst}";
1992 } else {
1993 die "invalid security group name '$adr'\n";
1994 }
1995 } elsif ($adr =~ m/^${ip_alias_pattern}$/){
1996 my $alias = lc($adr);
1997 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
1998 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1999 die "no such alias '$adr'\n" if !$e;
2000 $match = "-${dir} $e->{cidr}";
2001 } elsif ($adr =~ m/\-/){
2002 $match = "-m iprange --${srcdst}-range $adr";
2003 } else {
2004 $match = "-${dir} $adr";
2005 }
2006
2007 return $match;
2008}
2009
30c390f9
TW		 2010# convert a %rule to an array of iptables commands
2011sub ipt_rule_to_cmds {
2012 my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_;
2013
2014 die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen
2015
2016 my @match = ();
2017
2018 if (defined $rule->{match}) {
2019 push @match, $rule->{match};
2020 } else {
2021 push @match, "-i $rule->{iface_in}" if $rule->{iface_in};
2022 push @match, "-o $rule->{iface_out}" if $rule->{iface_out};
2023
2024 if ($rule->{source}) {
2025 push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf);
2026 }
2027 if ($rule->{dest}) {
2028 push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf);
2029 }
2030
2031 if (my $proto = $rule->{proto}) {
2032 push @match, "-p $proto";
2033
f776d6de
WB		 2034 my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1);
2035 my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0);
30c390f9 2036
f776d6de
WB		 2037 my $add_dport = sub {
2038 return if !$rule->{dport};
3dffed4c 2039
30c390f9
TW		 2040 if ($proto eq 'icmp') {
2041 # Note: we use dport to store --icmp-type
2042 die "unknown icmp-type '$rule->{dport}'\n"
2043 if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}});
2044 push @match, "-m icmp --icmp-type $rule->{dport}";
2045 } elsif ($proto eq 'icmpv6') {
2046 # Note: we use dport to store --icmpv6-type
2047 die "unknown icmpv6-type '$rule->{dport}'\n"
2048 if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}});
2049 push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
2050 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
2051 die "protocol $proto does not have ports\n";
f776d6de
WB		 2052 } elsif ($multidport) {
2053 push @match, "--match multiport", "--dports $rule->{dport}";
30c390f9 2054 } else {
f776d6de 2055 push @match, "--dport $rule->{dport}";
30c390f9 2056 }
f776d6de 2057 };
30c390f9 2058
f776d6de
WB		 2059 my $add_sport = sub {
2060 return if !$rule->{sport};
3dffed4c 2061
30c390f9
TW		 2062 die "protocol $proto does not have ports\n"
2063 if !$PROTOCOLS_WITH_PORTS->{$proto};
f776d6de
WB		 2064 if ($multisport) {
2065 push @match, "--match multiport", "--sports $rule->{sport}";
30c390f9
TW		 2066 } else {
2067 push @match, "--sport $rule->{sport}";
2068 }
f776d6de
WB		 2069 };
2070
3dffed4c 2071 # order matters - single port before multiport!
f776d6de
WB		 2072 $add_dport->() if $multisport;
2073 $add_sport->();
2074 $add_dport->() if !$multisport;
30c390f9
TW		 2075 } elsif ($rule->{dport} || $rule->{sport}) {
2076 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
2077 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
2078 }
2079
2080 push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
2081 }
2082 my $matchstr = scalar(@match) ? join(' ', @match) : "";
2083
2084 my $targetstr;
2085 if (defined $rule->{target}) {
2086 $targetstr = $rule->{target};
2087 } else {
2088 my $action = (defined $rule->{action}) ? $rule->{action} : "";
2089 my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
2090 $targetstr = ($goto) ? "-g $action" : "-j $action";
2091 }
2092
2093 my @iptcmds;
2db2b6aa
TL		 2094 my $log = $rule->{log};
2095 if (defined($log) && $log ne 'nolog') {
3489f8a2
CE		 2096 my $loglevel = $log_level_hash->{$log};
2097 my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel);
30c390f9
TW		 2098 push @iptcmds, "-A $chain $matchstr $logaction";
2099 }
2100 push @iptcmds, "-A $chain $matchstr $targetstr";
2101 return @iptcmds;
2102}
2103
eba0fb64 2104sub ruleset_generate_rule {
3489f8a2 2105 my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_;
eba0fb64 2106
e5076eee
DM		 2107 my $rules;
2108
2109 if ($rule->{macro}) {
35d1d6da 2110 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
e5076eee
DM		 2111 } else {
2112 $rules = [ $rule ];
2113 }
2114
30c390f9
TW		 2115 # update all or nothing
2116 my @ipt_rule_cmds;
2117 foreach my $r (@$rules) {
3489f8a2 2118 push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid);
30c390f9
TW		 2119 }
2120 foreach my $c (@ipt_rule_cmds) {
2121 ruleset_add_ipt_cmd($ruleset, $chain, $c);
2122 }
2123}
2124
3fa83edf
DM		 2125sub ruleset_create_chain {
2126 my ($ruleset, $chain) = @_;
3a616aa0 2127
d050c724 2128 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 2129 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 2130
3fa83edf
DM		 2131 die "chain '$chain' already exists\n" if $ruleset->{$chain};
2132
2133 $ruleset->{$chain} = [];
3a616aa0
AD		 2134}
2135
3fa83edf
DM		 2136sub ruleset_chain_exist {
2137 my ($ruleset, $chain) = @_;
3a616aa0 2138
3fa83edf
DM		 2139 return $ruleset->{$chain} ? 1 : undef;
2140}
3a616aa0 2141
30c390f9
TW		 2142# add an iptables command (like generated by ipt_rule_to_cmds) to a chain
2143sub ruleset_add_ipt_cmd {
2144 my ($ruleset, $chain, $iptcmd) = @_;
2145
2146 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2147
2148 push @{$ruleset->{$chain}}, $iptcmd;
2149}
2150
1e9c5070 2151sub ruleset_addrule {
3489f8a2 2152 my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
1e9c5070 2153
3489f8a2 2154 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1e9c5070 2155
3489f8a2
CE		 2156 if ($log) {
2157 my $loglevel = $log_level_hash->{$log};
2158 my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel);
7f7930f8 2159 push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
3489f8a2
CE		 2160 }
2161 # for stable ebtables digests avoid double-spaces to match ebtables-save output
2162 $match .= ' ' if length($match);
2163 push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
1e9c5070
TW		 2164}
2165
3fa83edf 2166sub ruleset_insertrule {
1e9c5070 2167 my ($ruleset, $chain, $match, $action, $log) = @_;
3a616aa0 2168
3fa83edf 2169 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 2170
1e9c5070 2171 unshift @{$ruleset->{$chain}}, "-A $chain $match $action";
3fa83edf 2172}
3a616aa0 2173
782c4cde
DM		 2174sub get_log_rule_base {
2175 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 2176
782c4cde 2177 $vmid = 0 if !defined($vmid);
7f7930f8 2178 $msg = "" if !defined($msg);
782c4cde 2179
cc37e000
TL		 2180 my $rlimit = '';
2181 if (defined($global_log_ratelimit)) {
2182 $rlimit = "-m limit $global_log_ratelimit ";
2183 }
2184
cbb5d6f3 2185 # Note: we use special format for prefix to pass further
7f7930f8 2186 # info to log daemon (VMID, LOGLEVEL and CHAIN)
cc37e000 2187 return "${rlimit}-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
782c4cde
DM		 2188}
2189
ead850e8 2190sub ruleset_add_chain_policy {
88c26d5e 2191 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 2192
2193 if ($policy eq 'ACCEPT') {
2194
180da76c
TW		 2195 my $rule = { action => 'ACCEPT' };
2196 rule_substitude_action($rule, { ACCEPT => $accept_action});
2197 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
ead850e8
DM		 2198
2199 } elsif ($policy eq 'DROP') {
2200
1e9c5070 2201 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop");
ead850e8 2202
7f7930f8 2203 ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid);
ead850e8 2204 } elsif ($policy eq 'REJECT') {
1e9c5070 2205 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject");
ead850e8 2206
d8d4dd67 2207 ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid);
ead850e8
DM		 2208 } else {
2209 # should not happen
2210 die "internal error: unknown policy '$policy'";
2211 }
2212}
2213
a83abe93 2214sub ruleset_chain_add_ndp {
e8415920 2215 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
a83abe93
WB		 2216 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
2217
1e9c5070 2218 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept);
d7aa51ac 2219 if ($direction ne 'OUT' || $options->{radv}) {
1e9c5070 2220 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept);
d7aa51ac 2221 }
1e9c5070
TW		 2222 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept);
2223 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept);
a83abe93
WB		 2224}
2225
e2943485 2226sub ruleset_chain_add_conn_filters {
27c49e25 2227 my ($ruleset, $chain, $allow_invalid, $accept) = @_;
e2943485 2228
27c49e25
CE		 2229 if (!$allow_invalid) {
2230 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
2231 }
1e9c5070 2232 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept");
e2943485
DM		 2233}
2234
2235sub ruleset_chain_add_input_filters {
88c26d5e 2236 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2428e394
AD		 2237
2238 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 2239 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
2240 ruleset_create_chain($ruleset, "PVEFW-blacklist");
3489f8a2 2241 ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0);
b5831a0d 2242 }
88c26d5e 2243 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1e9c5070 2244 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist");
2428e394 2245 }
e2943485
DM		 2246
2247 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
5b5c42b1 2248 if ($ipversion == 4) {
1e9c5070 2249 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs");
5b5c42b1 2250 }
e2943485
DM		 2251 }
2252
2253 if ($options->{tcpflags}) {
1e9c5070 2254 ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags");
e2943485
DM		 2255 }
2256}
2257
9e15114a 2258sub ruleset_create_vm_chain {
88c26d5e 2259 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 2260
9e15114a 2261 ruleset_create_chain($ruleset, $chain);
b47ecc88 2262 my $accept = generate_nfqueue($options);
3a616aa0 2263
ce15d90b 2264 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
dcafc5fb
WB		 2265 if ($ipversion == 4) {
2266 if ($direction eq 'OUT') {
75a12a9d 2267 ruleset_generate_rule($ruleset, $chain, $ipversion,
dcafc5fb
WB		 2268 { action => 'PVEFW-SET-ACCEPT-MARK',
2269 proto => 'udp', sport => 68, dport => 67 });
2270 } else {
2271 ruleset_generate_rule($ruleset, $chain, $ipversion,
2272 { action => 'ACCEPT',
2273 proto => 'udp', sport => 67, dport => 68 });
2274 }
2275 } elsif ($ipversion == 6) {
2276 if ($direction eq 'OUT') {
2277 ruleset_generate_rule($ruleset, $chain, $ipversion,
2278 { action => 'PVEFW-SET-ACCEPT-MARK',
2279 proto => 'udp', sport => 546, dport => 547 });
2280 } else {
2281 ruleset_generate_rule($ruleset, $chain, $ipversion,
2282 { action => 'ACCEPT',
2283 proto => 'udp', sport => 547, dport => 546 });
2284 }
76a2d1e7 2285 }
dcafc5fb 2286
ce15d90b
DM		 2287 }
2288
b21aca2c
DM		 2289 if ($direction eq 'OUT') {
2290 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1e9c5070 2291 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP");
b21aca2c 2292 }
d7aa51ac 2293 if ($ipversion == 6 && !$options->{radv}) {
1e9c5070 2294 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP");
d7aa51ac 2295 }
808d711d 2296 if ($ipfilter_ipset) {
1e9c5070 2297 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP");
808d711d 2298 }
1e9c5070 2299 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
c29f55c9 2300 }
e8415920
WB		 2301
2302 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept";
2303 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
9e15114a
DM		 2304}
2305
4bc6b5ac 2306sub ruleset_add_group_rule {
aedde2c2 2307 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM		 2308
2309 my $group = $rule->{action};
2310 my $group_chain = "GROUP-$group-$direction";
2311 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 2312 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 2313 }
bfc488f6 2314
f8b12fff 2315 if ($direction eq 'OUT' && $rule->{iface_out}) {
1e9c5070 2316 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain");
f8b12fff 2317 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1e9c5070 2318 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain");
4bc6b5ac 2319 } else {
1e9c5070 2320 ruleset_addrule($ruleset, $chain, "", "-j $group_chain");
4bc6b5ac
DM		 2321 }
2322
1e9c5070 2323 ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action");
4bc6b5ac
DM		 2324}
2325
9e15114a 2326sub ruleset_generate_vm_rules {
3489f8a2 2327 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_;
9e15114a
DM		 2328
2329 my $lc_direction = lc($direction);
c29f55c9 2330
6b8ca015
DM		 2331 my $in_accept = generate_nfqueue($options);
2332
92e976b3
DM		 2333 foreach my $rule (@$rules) {
2334 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 2335 next if !$rule->{enable} || $rule->{errors};
006490cb 2336 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 2337
92e976b3 2338 if ($rule->{type} eq 'group') {
4bc6b5ac 2339 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 2340 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM		 2341 } else {
2342 next if $rule->{type} ne $lc_direction;
921dfb33 2343 eval {
3489f8a2 2344 $rule->{logmsg} = "$rule->{action}: ";
921dfb33 2345 if ($direction eq 'OUT') {
180da76c 2346 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
3489f8a2 2347 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33 2348 } else {
180da76c 2349 rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" });
3489f8a2 2350 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33
DM		 2351 }
2352 };
2353 warn $@ if $@;
4e6112f9 2354 }
3a616aa0 2355 }
9e15114a
DM		 2356}
2357
b47ecc88
AD		 2358sub generate_nfqueue {
2359 my ($options) = @_;
2360
73089769
DM		 2361 if ($options->{ips}) {
2362 my $action = "NFQUEUE";
2363 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2364 if (defined($3) && defined($1)) {
b47ecc88 2365 $action .= " --queue-balance $1:$3";
73089769 2366 } elsif (defined($1)) {
b47ecc88
AD		 2367 $action .= " --queue-num $1";
2368 }
2369 }
8dc92812 2370 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 2371 return $action;
2372 } else {
2373 return "ACCEPT";
b47ecc88 2374 }
b47ecc88
AD		 2375}
2376
da6fc60b 2377sub ruleset_generate_vm_ipsrules {
a01c32c7 2378 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 2379
2380 if ($options->{ips} && $direction eq 'IN') {
2381 my $nfqueue = generate_nfqueue($options);
2382
a01c32c7 2383 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 2384 ruleset_create_chain($ruleset, "PVEFW-IPS");
2385 }
2386
1e9c5070 2387 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue");
da6fc60b
AD		 2388 }
2389}
2390
9e15114a 2391sub generate_tap_rules_direction {
84870b1a 2392 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM		 2393
2394 my $lc_direction = lc($direction);
2395
2396 my $rules = $vmfw_conf->{rules};
2397
2398 my $options = $vmfw_conf->{options};
2399 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
2400
2401 my $tapchain = "$iface-$direction";
2402
b692f42c 2403 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
88c26d5e 2404 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
74601077 2405 if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 2406
a34cfdd0 2407 if ($options->{enable}) {
033a15b3
ML		 2408 # create chain with mac and ip filter
2409 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
2410
3489f8a2 2411 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
3a616aa0 2412
a34cfdd0 2413 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 2414
a34cfdd0
DM		 2415 # implement policy
2416 my $policy;
ccae0b50 2417
a34cfdd0
DM		 2418 if ($direction eq 'OUT') {
2419 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2420 } else {
76448f08 2421 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 2422 }
ccae0b50 2423
a34cfdd0
DM		 2424 my $accept = generate_nfqueue($options);
2425 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2426 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
a34cfdd0
DM		 2427 } else {
2428 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
88c26d5e 2429 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
a34cfdd0 2430 }
3a616aa0 2431
3fa83edf 2432 # plug the tap chain to bridge chain
3cc81077 2433 if ($direction eq 'IN') {
a01c32c7 2434 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
8f3aa9cc 2435 "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain");
3cc81077 2436 } else {
a01c32c7 2437 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
8f3aa9cc 2438 "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain");
3cc81077 2439 }
3a616aa0
AD		 2440}
2441
d18c1e2b 2442sub enable_host_firewall {
06208a01 2443 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf) = @_;
0bd5f137 2444
92e976b3 2445 my $options = $hostfw_conf->{options};
63324b09 2446 my $cluster_options = $cluster_conf->{options};
92e976b3 2447 my $rules = $hostfw_conf->{rules};
35f0c37e 2448 my $cluster_rules = $cluster_conf->{rules};
178a63be 2449
06208a01
SR		 2450 # corosync preparation
2451 my $corosync_rule = "-p udp --dport 5404:5405";
2452 my $corosync_local_addresses = {};
eacd4748 2453 my $multicast_enabled;
06208a01
SR		 2454 my $local_hostname = PVE::INotify::nodename();
2455 if (defined($corosync_conf)) {
2456 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2457 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
2458
2459 if ($node_name eq $local_hostname) {
2460 $corosync_local_addresses->{$key} = $node_ip;
2461 }
2462 });
eacd4748
SR		 2463
2464 # allow multicast only if enabled in config
81a0a9ff
FG		 2465 my $corosync_transport = $corosync_conf->{main}->{totem}->{transport};
2466 $multicast_enabled = defined($corosync_transport) && $corosync_transport eq 'udp';
06208a01
SR		 2467 }
2468
3fa83edf 2469 # host inbound firewall
dec84fcd
DM		 2470 my $chain = "PVEFW-HOST-IN";
2471 ruleset_create_chain($ruleset, $chain);
0bd5f137 2472
178a63be
DM		 2473 my $loglevel = get_option_log_level($options, "log_level_in");
2474
1e9c5070 2475 ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT");
4ac863a6 2476
27c49e25 2477 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e8415920 2478 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
88c26d5e 2479 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
fb424a00 2480
23e888f8
DM		 2481 # we use RETURN because we need to check also tap rules
2482 my $accept_action = 'RETURN';
2483
1e9c5070 2484 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2485
35f0c37e
DM		 2486 # add host rules first, so that cluster wide rules can be overwritten
2487 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2488 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2489 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
bfc488f6 2490
f8b12fff 2491 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 2492
1a9978ed 2493 eval {
4fed896b 2494 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2495 if ($rule->{type} eq 'group') {
aedde2c2 2496 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 2497 } elsif ($rule->{type} eq 'in') {
180da76c 2498 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2499 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2500 }
2501 };
2502 warn $@ if $@;
f8b12fff 2503 delete $rule->{iface_in};
0bd5f137 2504 }
eb399cef
DM		 2505
2506 # allow standard traffic for management ipset (includes cluster network)
88c26d5e 2507 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
708ba714 2508 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
1e9c5070
TW		 2509 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API
2510 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2511 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
2512 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH
94e4ec75 2513 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 60000:60050", "-j $accept_action"); # Migration
bfc488f6 2514
06208a01
SR		 2515 # corosync inbound rules
2516 if (defined($corosync_conf)) {
eacd4748
SR		 2517 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2518 if $multicast_enabled;
3bc79f87 2519
06208a01
SR		 2520 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2521 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2522 my $destination = $corosync_local_addresses->{$key};
06208a01 2523
a9c463ce 2524 if ($node_name ne $local_hostname && defined($destination)) {
06208a01 2525 # accept only traffic on same ring
a9c463ce 2526 ruleset_addrule($ruleset, $chain, "-d $destination -s $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR		 2527 }
2528 });
3bc79f87 2529 }
0bd5f137 2530
23e888f8 2531 # implement input policy
63324b09 2532 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
88c26d5e 2533 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
0bd5f137 2534
3fa83edf 2535 # host outbound firewall
aadd745e 2536 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 2537 ruleset_create_chain($ruleset, $chain);
2538
178a63be
DM		 2539 $loglevel = get_option_log_level($options, "log_level_out");
2540
1e9c5070 2541 ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT");
e2943485 2542
27c49e25 2543 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e2943485 2544
23e888f8
DM		 2545 # we use RETURN because we may want to check other thigs later
2546 $accept_action = 'RETURN';
e8415920 2547 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action");
23e888f8 2548
1e9c5070 2549 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2550
35f0c37e
DM		 2551 # add host rules first, so that cluster wide rules can be overwritten
2552 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2553 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2554 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
5383df39 2555
f8b12fff 2556 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed 2557 eval {
3489f8a2 2558 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2559 if ($rule->{type} eq 'group') {
aedde2c2 2560 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 2561 } elsif ($rule->{type} eq 'out') {
180da76c 2562 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2563 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2564 }
2565 };
2566 warn $@ if $@;
f8b12fff 2567 delete $rule->{iface_out};
0bd5f137
AD		 2568 }
2569
3bc79f87 2570 # allow standard traffic on cluster network
06208a01
SR		 2571 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2572 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
2573
35d1d6da 2574 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW		 2575 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API
2576 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH
2577 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2578 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
06208a01 2579 }
bfc488f6 2580
06208a01
SR		 2581 # corosync outbound rules
2582 if (defined($corosync_conf)) {
eacd4748
SR		 2583 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2584 if $multicast_enabled;
06208a01
SR		 2585
2586 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2587 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2588 my $source = $corosync_local_addresses->{$key};
06208a01 2589
a9c463ce 2590 if ($node_name ne $local_hostname && defined($source)) {
06208a01 2591 # accept only traffic on same ring
a9c463ce 2592 ruleset_addrule($ruleset, $chain, "-s $source -d $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR		 2593 }
2594 });
3bc79f87
DM		 2595 }
2596
23e888f8 2597 # implement output policy
63324b09 2598 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
88c26d5e 2599 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
6158271d 2600
1e9c5070
TW		 2601 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT");
2602 ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN");
9d31b418
AD		 2603}
2604
2605sub generate_group_rules {
aedde2c2 2606 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2607
c6f5cc88 2608 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2609
b4deedab
DM		 2610 if (!$rules) {
2611 warn "no such security group '$group'\n";
2612 $rules = []; # create empty chain
2613 }
2614
3fa83edf 2615 my $chain = "GROUP-${group}-IN";
9d31b418 2616
3fa83edf 2617 ruleset_create_chain($ruleset, $chain);
1e9c5070 2618 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2619
92e976b3
DM		 2620 foreach my $rule (@$rules) {
2621 next if $rule->{type} ne 'in';
7a5a402b 2622 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2623 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
180da76c 2624 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
2dc0a26e 2625 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418
AD		 2626 }
2627
3fa83edf 2628 $chain = "GROUP-${group}-OUT";
9d31b418 2629
3fa83edf 2630 ruleset_create_chain($ruleset, $chain);
1e9c5070 2631 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2632
92e976b3
DM		 2633 foreach my $rule (@$rules) {
2634 next if $rule->{type} ne 'out';
7a5a402b 2635 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2636 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM		 2637 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2638 # check also other tap rules later
180da76c 2639 rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" });
2dc0a26e 2640 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418 2641 }
9d31b418
AD		 2642}
2643
51bae274
DM		 2644my $MAX_NETS = 32;
2645my $valid_netdev_names = {};
2646for (my $i = 0; $i < $MAX_NETS; $i++) {
2647 $valid_netdev_names->{"net$i"} = 1;
2648}
5e1267a5 2649
fe3d79b4
WB		 2650sub get_mark_values {
2651 my ($value, $mask) = @_;
2652 $value = hex($value) if $value =~ /^0x/;
2653 $mask = hex($mask) if defined($mask) && $mask =~ /^0x/;
2654 $mask = 0xffffffff if !defined($mask);
2655 return ($value, $mask);
2656}
2657
51bae274 2658sub parse_fw_rule {
40af93c4 2659 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env) = @_;
5e1267a5 2660
d4cda423
DM		 2661 my $orig_line = $line;
2662
6d9246e7
DM		 2663 my $rule = {};
2664
11bac5c2 2665 # we can add single line comments to the end of the rule
6d9246e7
DM		 2666 if ($line =~ s/#\s*(.*?)\s*$//) {
2667 $rule->{comment} = decode('utf8', $1);
2668 }
11bac5c2
DM		 2669
2670 # we can disable a rule when prefixed with '|'
ea9e5116 2671
6d9246e7 2672 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2673
dba740a9
DM		 2674 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2675 die "unable to parse rule: $line\n";
6d9246e7
DM		 2676
2677 $rule->{type} = lc($1);
2678 $rule->{action} = $2;
2679
2680 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2681 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2682 $rule->{macro} = $1;
2683 $rule->{action} = $2;
92e976b3 2684 }
51bae274
DM		 2685 }
2686
dba740a9
DM		 2687 while (length($line)) {
2688 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2689 $rule->{iface} = $1;
dba740a9
DM		 2690 next;
2691 }
51bae274 2692
6d9246e7 2693 last if $rule->{type} eq 'group';
51bae274 2694
dba740a9 2695 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2696 $rule->{proto} = $1;
dba740a9
DM		 2697 next;
2698 }
6d9246e7 2699
dba740a9 2700 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2701 $rule->{dport} = $1;
dba740a9
DM		 2702 next;
2703 }
6d9246e7 2704
dba740a9 2705 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2706 $rule->{sport} = $1;
dba740a9
DM		 2707 next;
2708 }
2709 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2710 $rule->{source} = $1;
dba740a9
DM		 2711 next;
2712 }
2713 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2714 $rule->{dest} = $1;
dba740a9
DM		 2715 next;
2716 }
3489f8a2
CE		 2717 if ($line =~ s/^-log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) {
2718 $rule->{log} = $1;
2719 next;
2720 }
51bae274 2721
dba740a9
DM		 2722 last;
2723 }
ba791b1f 2724
dba740a9 2725 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2726
a523e057 2727 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
eedcb564
WB		 2728 if ($rule->{errors}) {
2729 # The verbose flag really means we're running from the CLI and want
2730 # output on the console - in the other case we really want such errors
2731 # to go into the syslog instead.
2732 my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) };
2733 $log->("$prefix - errors in rule parameters: $orig_line\n");
d4cda423 2734 foreach my $p (keys %{$rule->{errors}}) {
eedcb564 2735 $log->(" $p: $rule->{errors}->{$p}\n");
d4cda423
DM		 2736 }
2737 }
6d9246e7
DM		 2738
2739 return $rule;
51bae274
DM		 2740}
2741
c5e8b008
AD		 2742sub verify_ethertype {
2743 my ($value) = @_;
2744 my $types = get_etc_ethertypes();
2745 die "unknown ethernet protocol type: $value\n"
2746 if !defined($types->{byname}->{$value}) &&
2747 !defined($types->{byid}->{$value});
2748}
2749
2d404ffc 2750sub parse_vmfw_option {
85c6eaed
DM		 2751 my ($line) = @_;
2752
2753 my ($opt, $value);
2754
178a63be
DM		 2755 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2756
74601077 2757 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2758 $opt = lc($1);
2759 $value = int($2);
178a63be
DM		 2760 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2761 $opt = lc($1);
2762 $value = $2 ? lc($3) : '';
72f63fde 2763 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2764 $opt = lc($1);
2765 $value = uc($3);
b47ecc88
AD		 2766 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2767 $opt = lc($1);
2768 $value = $2;
c5e8b008
AD		 2769 } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) {
2770 $opt = lc($1);
2771 $value = $2;
2772 verify_ethertype($_) foreach split(/\s*,\s*/, $value);
9c6b6efd 2773 } else {
85c6eaed
DM		 2774 die "can't parse option '$line'\n"
2775 }
2776
2777 return ($opt, $value);
2778}
2779
2d404ffc
DM		 2780sub parse_hostfw_option {
2781 my ($line) = @_;
2782
2783 my ($opt, $value);
2784
2785 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2786
ac5dd88e 2787 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2788 $opt = lc($1);
2789 $value = int($2);
178a63be 2790 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2791 $opt = lc($1);
2792 $value = $2 ? lc($3) : '';
ac5dd88e 2793 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established|nf_conntrack_tcp_timeout_syn_recv|protection_synflood_rate|protection_synflood_burst|protection_limit):\s*(\d+)\s*$/i) {
490cdead
DM		 2794 $opt = lc($1);
2795 $value = int($2);
2d404ffc 2796 } else {
2d404ffc
DM		 2797 die "can't parse option '$line'\n"
2798 }
2799
2800 return ($opt, $value);
2801}
2802
c6f5cc88
DM		 2803sub parse_clusterfw_option {
2804 my ($line) = @_;
2805
2806 my ($opt, $value);
2807
72d055fc 2808 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
c6f5cc88
DM		 2809 $opt = lc($1);
2810 $value = int($2);
72d055fc
AG		 2811 if (($value > 1) && ((time() - $value) > 60)) {
2812 $value = 0
2813 }
2549e7ef 2814 } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) {
84025e99
SI		 2815 $opt = lc($1);
2816 $value = int($2);
63324b09
DM		 2817 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2818 $opt = lc($1);
2819 $value = uc($3);
cc37e000
TL		 2820 } elsif ($line =~ m/^(log_ratelimit):\s*(\S+)\s*$/) {
2821 $opt = lc($1);
2822 $value = $2;
c6f5cc88 2823 } else {
c6f5cc88
DM		 2824 die "can't parse option '$line'\n"
2825 }
2826
2827 return ($opt, $value);
2828}
2829
6c221576
DM		 2830sub resolve_alias {
2831 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2832
6d959e3f 2833 my $alias = lc($cidr);
04f5088f 2834 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
6d959e3f 2835 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2836
6d959e3f
DM		 2837 die "no such alias '$cidr'\n" if !$e;;
2838
2839 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM		 2840}
2841
ae029a88
DM		 2842sub parse_ip_or_cidr {
2843 my ($cidr) = @_;
2844
2845 my $ipversion;
75a12a9d 2846
ae029a88
DM		 2847 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2848 $cidr =~ s|/128$||;
2849 $ipversion = 6;
2850 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2851 $cidr =~ s|/32$||;
2852 $ipversion = 4;
2853 } else {
2854 die "value does not look like a valid IP address or CIDR network\n";
2855 }
2856
2857 return wantarray ? ($cidr, $ipversion) : $cidr;
2858}
2859
e76a9f53 2860sub parse_alias {
92e1209b
AD		 2861 my ($line) = @_;
2862
81d574a7
DM		 2863 # we can add single line comments to the end of the line
2864 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2865
92e1209b 2866 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2867 my ($name, $cidr) = ($1, $2);
ae029a88
DM		 2868 my $ipversion;
2869
2870 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2871
81d574a7
DM		 2872 my $data = {
2873 name => $name,
2874 cidr => $cidr,
70e524eb 2875 ipversion => $ipversion,
81d574a7
DM		 2876 };
2877 $data->{comment} = $comment if $comment;
2878 return $data;
92e1209b
AD		 2879 }
2880
81d574a7 2881 return undef;
92e1209b
AD		 2882}
2883
e5cd1ee0 2884sub generic_fw_config_parser {
585ede43
TL		 2885 my ($filename, $cluster_conf, $empty_conf, $rule_env) = @_;
2886
51bae274
DM		 2887 my $section;
2888 my $group;
2889
1210ae94 2890 my $res = $empty_conf;
6158271d 2891
0dbef530
TL		 2892 my $raw;
2893 if ($filename =~ m!^/etc/pve/(.*)$!) {
2894 $raw = PVE::Cluster::get_config($1);
2895 } else {
2896 $raw = eval { PVE::Tools::file_get_contents($filename) }; # ignore errors
2897 }
2898 return {} if !$raw;
2899
2900 my $linenr = 0;
2901 while ($raw =~ /^\h*(.*?)\h*$/gm) {
2902 my $line = $1;
2903 $linenr++;
51bae274
DM		 2904 next if $line =~ m/^#/;
2905 next if $line =~ m/^\s*$/;
c8c534f7
DM		 2906 chomp $line;
2907
961b4928
DM		 2908 my $prefix = "$filename (line $linenr)";
2909
1210ae94 2910 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2911 $section = 'options';
2912 next;
2913 }
2914
1210ae94 2915 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2916 $section = 'aliases';
2917 next;
2918 }
2919
1210ae94 2920 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2921 $section = 'groups';
92e976b3 2922 $group = lc($1);
0d22acb3 2923 my $comment = $2;
351052d1
DM		 2924 eval {
2925 die "security group name too long\n" if length($group) > $max_group_name_length;
2926 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2927 };
2928 if (my $err = $@) {
2929 ($section, $group, $comment) = undef;
2930 warn "$prefix: $err";
2931 next;
2932 }
75a12a9d 2933
c85c87f9 2934 $res->{$section}->{$group} = [];
649e4d57
DM		 2935 $res->{group_comments}->{$group} = decode('utf8', $comment)
2936 if $comment;
51bae274
DM		 2937 next;
2938 }
34cdedfa 2939
1210ae94 2940 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2941 $section = 'rules';
2942 next;
2943 }
cbb5d6f3 2944
1210ae94 2945 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2946 $section = 'ipset';
2947 $group = lc($1);
d72c631c 2948 my $comment = $2;
75a12a9d 2949 eval {
351052d1
DM		 2950 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2951 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2952 };
2953 if (my $err = $@) {
2954 ($section, $group, $comment) = undef;
2955 warn "$prefix: $err";
2956 next;
2957 }
2958
c85c87f9 2959 $res->{$section}->{$group} = [];
e34d0e58 2960 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2961 if $comment;
34cdedfa
AD		 2962 next;
2963 }
2964
c6f5cc88 2965 if (!$section) {
cbb5d6f3 2966 warn "$prefix: skip line - no section\n";
51bae274
DM		 2967 next;
2968 }
2969
c6f5cc88
DM		 2970 if ($section eq 'options') {
2971 eval {
1210ae94
DM		 2972 my ($opt, $value);
2973 if ($rule_env eq 'cluster') {
2974 ($opt, $value) = parse_clusterfw_option($line);
2975 } elsif ($rule_env eq 'host') {
2976 ($opt, $value) = parse_hostfw_option($line);
2977 } else {
2978 ($opt, $value) = parse_vmfw_option($line);
2979 }
c6f5cc88
DM		 2980 $res->{options}->{$opt} = $value;
2981 };
2982 warn "$prefix: $@" if $@;
92e1209b
AD		 2983 } elsif ($section eq 'aliases') {
2984 eval {
e76a9f53 2985 my $data = parse_alias($line);
81d574a7 2986 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2987 };
2988 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2989 } elsif ($section eq 'rules') {
2990 my $rule;
40af93c4 2991 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env); };
c6f5cc88
DM		 2992 if (my $err = $@) {
2993 warn "$prefix: $err";
2994 next;
2995 }
2996 push @{$res->{$section}}, $rule;
2997 } elsif ($section eq 'groups') {
34cdedfa 2998 my $rule;
40af93c4 2999 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group'); };
34cdedfa
AD		 3000 if (my $err = $@) {
3001 warn "$prefix: $err";
3002 next;
3003 }
3f95d14a 3004 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 3005 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 3006 # we can add single line comments to the end of the rule
3007 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
3008
30f1b100 3009 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 3010 my $nomatch = $1;
9d6f90e6 3011 my $cidr = $2;
d46b1ef6
DM		 3012 my $errors;
3013
3014 if ($nomatch && !$feature_ipset_nomatch) {
3015 $errors->{nomatch} = "nomatch not supported by kernel";
3016 }
2a052ee3 3017
75a12a9d 3018 eval {
4803b296
DM		 3019 if ($cidr =~ m/^${ip_alias_pattern}$/) {
3020 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
3021 } else {
ae029a88 3022 $cidr = parse_ip_or_cidr($cidr);
92e1209b 3023 }
4803b296
DM		 3024 };
3025 if (my $err = $@) {
c8c534f7 3026 chomp $err;
d46b1ef6 3027 $errors->{cidr} = $err;
2a052ee3 3028 }
2a052ee3 3029
b14db52f
WB		 3030 if ($cidr =~ m!/0+$!) {
3031 $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n";
3032 }
3033
e34d0e58 3034 my $entry = { cidr => $cidr };
9d6f90e6
DM		 3035 $entry->{nomatch} = 1 if $nomatch;
3036 $entry->{comment} = $comment if $comment;
d46b1ef6 3037 $entry->{errors} = $errors if $errors;
e34d0e58 3038
c8c534f7 3039 if ($verbose && $errors) {
9a3061c7 3040 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 3041 foreach my $p (keys %{$errors}) {
3042 warn " $p: $errors->{$p}\n";
3043 }
3044 }
3045
9d6f90e6 3046 push @{$res->{$section}->{$group}}, $entry;
1210ae94
DM		 3047 } else {
3048 warn "$prefix: skip line - unknown section\n";
3049 next;
51bae274 3050 }
5e1267a5
DM		 3051 }
3052
3053 return $res;
3054}
3055
fab41100
FG		 3056# this is only used to prevent concurrent runs of rule compilation/application
3057# see lock_*_conf for cfs locks protectiong config modification
06320eb0
DM		 3058sub run_locked {
3059 my ($code, @param) = @_;
3060
3061 my $timeout = 10;
3062
3063 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
3064
3065 die $@ if $@;
3066
3067 return $res;
3068}
3069
5e1267a5
DM		 3070sub read_local_vm_config {
3071
5e1267a5 3072 my $qemu = {};
3b4882dc 3073 my $lxc = {};
5e1267a5 3074
fdefeeab 3075 my $vmdata = { qemu => $qemu, lxc => $lxc };
5e1267a5 3076
c8301d63
DM		 3077 my $vmlist = PVE::Cluster::get_vmlist();
3078 return $vmdata if !$vmlist || !$vmlist->{ids};
3079 my $ids = $vmlist->{ids};
3080
3081 foreach my $vmid (keys %$ids) {
3082 next if !$vmid; # skip VE0
3083 my $d = $ids->{$vmid};
3084 next if !$d->{node} || $d->{node} ne $nodename;
3085 next if !$d->{type};
fdefeeab 3086 if ($d->{type} eq 'qemu') {
d9fee004 3087 if ($have_qemu_server) {
b5a16dd3 3088 my $cfspath = PVE::QemuConfig->cfs_config_path($vmid);
d9fee004
DM		 3089 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3090 $qemu->{$vmid} = $conf;
3091 }
c8301d63 3092 }
3b4882dc
AG		 3093 } elsif ($d->{type} eq 'lxc') {
3094 if ($have_lxc) {
a7c85d56 3095 my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
3b4882dc
AG		 3096 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3097 $lxc->{$vmid} = $conf;
3098 }
3099 }
3100 }
5e1267a5 3101 }
d9fee004 3102
5e1267a5
DM		 3103 return $vmdata;
3104};
3105
fab41100
FG		 3106sub lock_vmfw_conf {
3107 my ($vmid, $timeout, $code, @param) = @_;
3108
3109 die "can't lock VM firewall config for undefined VMID\n"
3110 if !defined($vmid);
3111
3112 my $res = PVE::Cluster::cfs_lock_firewall("vm-$vmid", $timeout, $code, @param);
3113 die $@ if $@;
3114
3115 return $res;
3116}
3117
e7b35711 3118sub load_vmfw_conf {
40af93c4 3119 my ($cluster_conf, $rule_env, $vmid, $dir) = @_;
e7b35711 3120
21053409 3121 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177 3122 my $filename = "$dir/$vmid.fw";
585ede43
TL		 3123
3124 my $empty_conf = {
3125 rules => [],
3126 options => {},
3127 aliases => {},
3128 ipset => {} ,
3129 ipset_comments => {},
3130 };
3131
3132 my $vmfw_conf = generic_fw_config_parser($filename, $cluster_conf, $empty_conf, $rule_env);
3133 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 3134
3135 return $vmfw_conf;
3136}
3137
464f933e 3138my $format_rules = sub {
dba740a9 3139 my ($rules, $allow_iface) = @_;
464f933e
DM		 3140
3141 my $raw = '';
3142
3143 foreach my $rule (@$rules) {
c14dacdf 3144 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 3145 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
3146 $raw .= uc($rule->{type});
7ca36671
DM		 3147 if ($rule->{macro}) {
3148 $raw .= " $rule->{macro}($rule->{action})";
3149 } else {
3150 $raw .= " " . $rule->{action};
3151 }
dba740a9
DM		 3152 if ($allow_iface && $rule->{iface}) {
3153 $raw .= " -i $rule->{iface}";
3154 }
c14dacdf
DM		 3155
3156 if ($rule->{type} ne 'group') {
dba740a9
DM		 3157 $raw .= " -source $rule->{source}" if $rule->{source};
3158 $raw .= " -dest $rule->{dest}" if $rule->{dest};
3159 $raw .= " -p $rule->{proto}" if $rule->{proto};
3160 $raw .= " -dport $rule->{dport}" if $rule->{dport};
3161 $raw .= " -sport $rule->{sport}" if $rule->{sport};
3489f8a2 3162 $raw .= " -log $rule->{log}" if $rule->{log};
c14dacdf
DM		 3163 }
3164
cbb5d6f3 3165 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 3166 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
3167 $raw .= "\n";
3168 } else {
c14dacdf 3169 die "unknown rule type '$rule->{type}'";
464f933e
DM		 3170 }
3171 }
3172
3173 return $raw;
3174};
3175
3176my $format_options = sub {
68c90e21
DM		 3177 my ($options) = @_;
3178
3179 my $raw = '';
464f933e
DM		 3180
3181 $raw .= "[OPTIONS]\n\n";
3182 foreach my $opt (keys %$options) {
3183 $raw .= "$opt: $options->{$opt}\n";
3184 }
3185 $raw .= "\n";
68c90e21
DM		 3186
3187 return $raw;
464f933e
DM		 3188};
3189
0d5f0a0f
DM		 3190my $format_aliases = sub {
3191 my ($aliases) = @_;
3192
3193 my $raw = '';
3194
3195 $raw .= "[ALIASES]\n\n";
3196 foreach my $k (keys %$aliases) {
81d574a7
DM		 3197 my $e = $aliases->{$k};
3198 $raw .= "$e->{name} $e->{cidr}";
3199 $raw .= " # " . encode('utf8', $e->{comment})
3200 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
3201 $raw .= "\n";
0d5f0a0f
DM		 3202 }
3203 $raw .= "\n";
3204
3205 return $raw;
3206};
3207
1210ae94
DM		 3208my $format_ipsets = sub {
3209 my ($fw_conf) = @_;
75a12a9d 3210
9d6f90e6
DM		 3211 my $raw = '';
3212
1210ae94
DM		 3213 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
3214 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
3215 my $utf8comment = encode('utf8', $comment);
3216 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
3217 } else {
3218 $raw .= "[IPSET $ipset]\n\n";
3219 }
3220 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 3221
1210ae94
DM		 3222 my $nethash = {};
3223 foreach my $entry (@$options) {
3224 $nethash->{$entry->{cidr}} = $entry;
3225 }
3226
3227 foreach my $cidr (sort keys %$nethash) {
3228 my $entry = $nethash->{$cidr};
3229 my $line = $entry->{nomatch} ? '!' : '';
3230 $line .= $entry->{cidr};
3231 $line .= " # " . encode('utf8', $entry->{comment})
3232 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
3233 $raw .= "$line\n";
3234 }
3235
3236 $raw .= "\n";
9d6f90e6 3237 }
e34d0e58 3238
9d6f90e6
DM		 3239 return $raw;
3240};
3241
464f933e
DM		 3242sub save_vmfw_conf {
3243 my ($vmid, $vmfw_conf) = @_;
3244
3245 my $raw = '';
3246
3247 my $options = $vmfw_conf->{options};
89ea63c8 3248 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3249
e76a9f53 3250 my $aliases = $vmfw_conf->{aliases};
89ea63c8 3251 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 3252
89ea63c8 3253 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 3254
8824b2f0 3255 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 3256 if ($rules && scalar(@$rules)) {
464f933e
DM		 3257 $raw .= "[RULES]\n\n";
3258 $raw .= &$format_rules($rules, 1);
3259 $raw .= "\n";
3260 }
3261
21053409 3262 my $filename = "$pvefw_conf_dir/$vmid.fw";
c32e04e6
FG		 3263 if ($raw) {
3264 mkdir $pvefw_conf_dir;
3265 PVE::Tools::file_set_contents($filename, $raw);
3266 } else {
3267 unlink $filename;
3268 }
464f933e
DM		 3269}
3270
edee9035
AG		 3271sub remove_vmfw_conf {
3272 my ($vmid) = @_;
3273
3274 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
3275
3276 unlink $vmfw_conffile;
3277}
3278
5471ff7c
AG		 3279sub clone_vmfw_conf {
3280 my ($vmid, $newid) = @_;
3281
3282 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
3283 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
3284
9388a8f4
FG		 3285 lock_vmfw_conf($newid, 10, sub {
3286 if (-f $clonevm_conffile) {
3287 unlink $clonevm_conffile;
3288 }
3289 if (-f $sourcevm_conffile) {
3290 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
3291 PVE::Tools::file_set_contents($clonevm_conffile, $data);
3292 }
3293 });
5471ff7c
AG		 3294}
3295
6fc63ffd 3296sub read_vm_firewall_configs {
40af93c4 3297 my ($cluster_conf, $vmdata, $dir) = @_;
8aef5177 3298
6fc63ffd 3299 my $vmfw_configs = {};
c8301d63 3300
b6b8e6ad 3301 foreach my $vmid (keys %{$vmdata->{qemu}}) {
40af93c4 3302 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir);
75a12a9d 3303 next if !$vmfw_conf->{options}; # skip if file does not exist
b6b8e6ad
DM		 3304 $vmfw_configs->{$vmid} = $vmfw_conf;
3305 }
3b4882dc 3306 foreach my $vmid (keys %{$vmdata->{lxc}}) {
40af93c4 3307 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir);
75a12a9d 3308 next if !$vmfw_conf->{options}; # skip if file does not exist
3b4882dc
AG		 3309 $vmfw_configs->{$vmid} = $vmfw_conf;
3310 }
5e1267a5 3311
6fc63ffd 3312 return $vmfw_configs;
5e1267a5
DM		 3313}
3314
2d404ffc
DM		 3315sub get_option_log_level {
3316 my ($options, $k) = @_;
3317
3318 my $v = $options->{$k};
178a63be 3319 $v = $default_log_level if !defined($v);
2d404ffc
DM		 3320
3321 return undef if $v eq '' || $v eq 'nolog';
3322
3489f8a2 3323 return $v if defined($log_level_hash->{$v});
2d404ffc
DM		 3324
3325 warn "unknown log level ($k = '$v')\n";
3326
3327 return undef;
3328}
3329
d8f2505e 3330sub generate_std_chains {
db8a955f
DM		 3331 my ($ruleset, $options, $ipversion) = @_;
3332
3333 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
cbb5d6f3 3334
2d404ffc 3335 my $loglevel = get_option_log_level($options, 'smurf_log_level');
044409e5
TW		 3336 my $chain = 'PVEFW-smurflog';
3337 if ( $std_chains->{$chain} ) {
3338 foreach my $r (@{$std_chains->{$chain}}) {
3339 $r->{log} = $loglevel;
3340 }
db8a955f 3341 }
2d404ffc
DM		 3342
3343 # same as shorewall logflags action.
3344 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 3345 $chain = 'PVEFW-logflags';
044409e5
TW		 3346 if ( $std_chains->{$chain} ) {
3347 foreach my $r (@{$std_chains->{$chain}}) {
3348 $r->{log} = $loglevel;
3349 }
3350 }
d8f2505e 3351
db8a955f 3352 foreach my $chain (keys %$std_chains) {
d8f2505e 3353 ruleset_create_chain($ruleset, $chain);
db8a955f 3354 foreach my $rule (@{$std_chains->{$chain}}) {
d8f2505e 3355 if (ref($rule)) {
3489f8a2 3356 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0);
d8f2505e 3357 } else {
044409e5 3358 die "rule $rule as string - should not happen";
d8f2505e
DM		 3359 }
3360 }
3361 }
3362}
3363
34cdedfa 3364sub generate_ipset_chains {
74601077 3365 my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_;
34cdedfa 3366
74601077 3367 foreach my $ipset (keys %{$ipsets}) {
34cdedfa 3368
74601077 3369 my $options = $ipsets->{$ipset};
34cdedfa 3370
ebf72e49
WB		 3371 if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) {
3372 if (my $ips = $device_ips->{$1}) {
3373 $options = [@$options, @$ips];
3374 }
3375 }
3376
88c26d5e
DM		 3377 # remove duplicates
3378 my $nethash = {};
3379 foreach my $entry (@$options) {
3380 next if $entry->{errors}; # skip entries with errors
3381 eval {
3382 my ($cidr, $ver);
3383 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
3384 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
3385 } else {
3386 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
3387 }
3388 #http://backreference.org/2013/03/01/ipv6-address-normalization/
3389 if ($ver == 6) {
e0a9139f
WB		 3390 # ip_compress_address takes an address only, no CIDR
3391 my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@);
3392 $cidr = lc(Net::IP::ip_compress_address($addr, 6));
3393 $cidr .= $prefix_len if defined($prefix_len);
88c26d5e
DM		 3394 $cidr =~ s|/128$||;
3395 } else {
3396 $cidr =~ s|/32$||;
3397 }
34cdedfa 3398
88c26d5e
DM		 3399 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
3400 };
3401 warn $@ if $@;
3402 }
6d959e3f 3403
88c26d5e
DM		 3404 foreach my $ipversion (4, 6) {
3405 my $data = $nethash->{$ipversion};
30f1b100 3406
88c26d5e 3407 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
6d959e3f 3408
88c26d5e
DM		 3409 my $hashsize = scalar(@$options);
3410 if ($hashsize <= 64) {
3411 $hashsize = 64;
3412 } else {
3413 $hashsize = round_powerof2($hashsize);
3414 }
6d959e3f 3415
88c26d5e 3416 my $family = $ipversion == "6" ? "inet6" : "inet";
30f1b100 3417
88c26d5e 3418 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
6d959e3f 3419
88c26d5e
DM		 3420 foreach my $cidr (sort keys %$data) {
3421 my $entry = $data->{$cidr};
6d959e3f 3422
88c26d5e
DM		 3423 my $cmd = "add $name $cidr";
3424 if ($entry->{nomatch}) {
3425 if ($feature_ipset_nomatch) {
3426 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3427 } else {
3428 warn "ignore !$cidr - nomatch not supported by kernel\n";
3429 }
6d959e3f 3430 } else {
88c26d5e 3431 push @{$ipset_ruleset->{$name}}, $cmd;
6d959e3f 3432 }
9d6f90e6 3433 }
9d6f90e6 3434 }
34cdedfa 3435 }
2a052ee3
AD		 3436}
3437
3438sub round_powerof2 {
dd7a13fd 3439 my ($int) = @_;
2a052ee3 3440
dd7a13fd
DM		 3441 $int--;
3442 $int |= $int >> $_ foreach (1,2,4,8,16);
3443 return ++$int;
34cdedfa
AD		 3444}
3445
cc37e000
TL		 3446my $set_global_log_ratelimit = sub {
3447 my $cluster_opts = shift;
3448
3449 $global_log_ratelimit = '--limit 1/sec';
3450 if (defined(my $log_rlimit = $cluster_opts->{log_ratelimit})) {
3451 my $ll_format = $cluster_option_properties->{log_ratelimit}->{format};
3452 my $limit = PVE::JSONSchema::parse_property_string($ll_format, $log_rlimit);
3453
3454 if ($limit->{enable}) {
3455 if (my $rate = $limit->{rate}) {
3456 $global_log_ratelimit = "--limit $rate";
3457 }
3458 if (my $burst = $limit->{burst}) {
3459 $global_log_ratelimit .= " --limit-burst $burst";
3460 }
3461 } else {
3462 $global_log_ratelimit = undef;
3463 }
3464 }
3465};
3466
fab41100
FG		 3467sub lock_clusterfw_conf {
3468 my ($timeout, $code, @param) = @_;
3469
3470 my $res = PVE::Cluster::cfs_lock_firewall("cluster", $timeout, $code, @param);
3471 die $@ if $@;
3472
3473 return $res;
3474}
3475
fca39c2c 3476sub load_clusterfw_conf {
40af93c4 3477 my ($filename) = @_;
8aef5177
DM		 3478
3479 $filename = $clusterfw_conf_filename if !defined($filename);
585ede43
TL		 3480 my $empty_conf = {
3481 rules => [],
3482 options => {},
3483 aliases => {},
3484 groups => {},
3485 group_comments => {},
3486 ipset => {} ,
3487 ipset_comments => {},
3488 };
530c005e 3489
585ede43
TL		 3490 my $cluster_conf = generic_fw_config_parser($filename, $empty_conf, $empty_conf, 'cluster');
3491 $set_global_log_ratelimit->($cluster_conf->{options});
5e1267a5 3492
fca39c2c 3493 return $cluster_conf;
e5d76bde
DM		 3494}
3495
fca39c2c
DM		 3496sub save_clusterfw_conf {
3497 my ($cluster_conf) = @_;
9c7e0858
DM		 3498
3499 my $raw = '';
9c7e0858 3500
c6f5cc88 3501 my $options = $cluster_conf->{options};
89ea63c8 3502 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 3503
0d5f0a0f 3504 my $aliases = $cluster_conf->{aliases};
89ea63c8 3505 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 3506
89ea63c8 3507 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
75a12a9d 3508
c6f5cc88 3509 my $rules = $cluster_conf->{rules};
89ea63c8 3510 if ($rules && scalar(@$rules)) {
c6f5cc88 3511 $raw .= "[RULES]\n\n";
63c91681 3512 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 3513 $raw .= "\n";
3514 }
3515
89ea63c8
DM		 3516 if ($cluster_conf->{groups}) {
3517 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3518 my $rules = $cluster_conf->{groups}->{$group};
3519 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3520 my $utf8comment = encode('utf8', $comment);
3521 $raw .= "[group $group] # $utf8comment\n\n";
3522 } else {
3523 $raw .= "[group $group]\n\n";
3524 }
0d22acb3 3525
89ea63c8
DM		 3526 $raw .= &$format_rules($rules, 0);
3527 $raw .= "\n";
3528 }
9c7e0858
DM		 3529 }
3530
c32e04e6
FG		 3531 if ($raw) {
3532 mkdir $pvefw_conf_dir;
3533 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3534 } else {
3535 unlink $clusterfw_conf_filename;
3536 }
9c7e0858
DM		 3537}
3538
fab41100
FG		 3539sub lock_hostfw_conf {
3540 my ($timeout, $code, @param) = @_;
3541
3542 my $res = PVE::Cluster::cfs_lock_firewall("host-$nodename", $timeout, $code, @param);
3543 die $@ if $@;
3544
3545 return $res;
3546}
3547
8b27beb9 3548sub load_hostfw_conf {
40af93c4 3549 my ($cluster_conf, $filename) = @_;
8aef5177
DM		 3550
3551 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9 3552
585ede43
TL		 3553 my $empty_conf = { rules => [], options => {}};
3554 return generic_fw_config_parser($filename, $cluster_conf, $empty_conf, 'host');
8b27beb9
DM		 3555}
3556
63c91681
DM		 3557sub save_hostfw_conf {
3558 my ($hostfw_conf) = @_;
3559
3560 my $raw = '';
3561
3562 my $options = $hostfw_conf->{options};
89ea63c8 3563 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3564
63c91681 3565 my $rules = $hostfw_conf->{rules};
89ea63c8 3566 if ($rules && scalar(@$rules)) {
63c91681
DM		 3567 $raw .= "[RULES]\n\n";
3568 $raw .= &$format_rules($rules, 1);
3569 $raw .= "\n";
3570 }
3571
c32e04e6
FG		 3572 if ($raw) {
3573 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3574 } else {
3575 unlink $hostfw_conf_filename;
3576 }
63c91681
DM		 3577}
3578
e5d76bde 3579sub compile {
06208a01 3580 my ($cluster_conf, $hostfw_conf, $vmdata, $corosync_conf) = @_;
3dfa8a7f 3581
8aef5177
DM		 3582 my $vmfw_configs;
3583
cfd7cd9c
TW		 3584 # fixme: once we read standard chains from config this needs to be put in test/standard cases below
3585 $pve_std_chains = dclone($pve_std_chains_conf);
3586
8aef5177
DM		 3587 if ($vmdata) { # test mode
3588 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3589 my $filename = "$testdir/cluster.fw";
40af93c4 3590 $cluster_conf = load_clusterfw_conf($filename);
8aef5177
DM		 3591
3592 $filename = "$testdir/host.fw";
40af93c4 3593 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename);
8aef5177 3594
40af93c4 3595 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir);
8aef5177 3596 } else { # normal operation
40af93c4 3597 $cluster_conf = load_clusterfw_conf(undef) if !$cluster_conf;
8aef5177 3598
40af93c4 3599 $hostfw_conf = load_hostfw_conf($cluster_conf, undef) if !$hostfw_conf;
8aef5177 3600
06208a01 3601 # cfs_update is handled by daemon or API
328d1e87
SR		 3602 $corosync_conf = PVE::Cluster::cfs_read_file("corosync.conf")
3603 if !defined($corosync_conf) && PVE::Corosync::check_conf_exists(1);
06208a01 3604
8aef5177 3605 $vmdata = read_local_vm_config();
40af93c4 3606 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef);
8aef5177 3607 }
3dfa8a7f 3608
84025e99 3609 return ({},{},{},{}) if !$cluster_conf->{options}->{enable};
9268573a 3610
525778d7
DM		 3611 my $localnet;
3612 if ($cluster_conf->{aliases}->{local_network}) {
3613 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3614 } else {
afcd29b3
DM		 3615 my $localnet_ver;
3616 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3617
84025e99 3618 $cluster_conf->{aliases}->{local_network} = {
afcd29b3 3619 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
525778d7
DM		 3620 }
3621
3622 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 3623
64e0adf4
AD		 3624 my $ruleset = {};
3625 my $rulesetv6 = {};
3626 $ruleset->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
3627 $ruleset->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
3628 $rulesetv6->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
3629 $rulesetv6->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
40af93c4 3630 my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata);
147dd882
WB		 3631 my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata);
3632
c5e8b008 3633 return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
147dd882
WB		 3634}
3635
64e0adf4
AD		 3636sub compile_iptables_raw {
3637 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
3638
3639 my $ruleset = {};
3640
ac5dd88e
AD		 3641 my $hostfw_options = $hostfw_conf->{options} || {};
3642 my $protection_synflood = $hostfw_options->{protection_synflood} || 0;
3643
3644 if($protection_synflood) {
3645
3646 my $protection_synflood_rate = $hostfw_options->{protection_synflood_rate} ? $hostfw_options->{protection_synflood_rate} : 200;
3647 my $protection_synflood_burst = $hostfw_options->{protection_synflood_burst} ? $hostfw_options->{protection_synflood_burst} : 1000;
3648 my $protection_synflood_limit = $hostfw_options->{protection_synflood_limit} ? $hostfw_options->{protection_synflood_limit} : 3000;
3649 my $protection_synflood_expire = $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} ? $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} : 60;
3650 $protection_synflood_expire = $protection_synflood_expire * 1000;
3651 my $protection_synflood_mask = $ipversion == 4 ? 32 : 64;
3652
3653 ruleset_create_chain($ruleset, "PVEFW-PREROUTING");
3654 ruleset_addrule($ruleset, "PVEFW-PREROUTING", "-p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m hashlimit --hashlimit-above $protection_synflood_rate/sec --hashlimit-burst $protection_synflood_burst --hashlimit-mode srcip --hashlimit-name syn --hashlimit-htable-size 2097152 --hashlimit-srcmask $protection_synflood_mask --hashlimit-htable-expire $protection_synflood_expire", "-j DROP");
3655 }
3656
64e0adf4
AD		 3657 return $ruleset;
3658}
3659
147dd882 3660sub compile_iptables_filter {
06208a01 3661 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
085fd492 3662
3fa83edf
DM		 3663 my $ruleset = {};
3664
dec84fcd
DM		 3665 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3666 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 3667
fadb13dd 3668 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 3669
8b27beb9 3670 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 3671
88733a74
AD		 3672 # fixme: what log level should we use here?
3673 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3674
b409c8a8
TL		 3675 my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0;
3676 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT");
88733a74 3677
e2943485 3678 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
88c26d5e 3679 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
e2943485 3680
1e9c5070 3681 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN");
e2943485
DM		 3682
3683 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
1e9c5070 3684 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT");
e2943485 3685
db8a955f 3686 generate_std_chains($ruleset, $hostfw_options, $ipversion);
fadb13dd 3687
6d2ab017 3688 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 3689
35d1d6da 3690 if ($hostfw_enable) {
06208a01 3691 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf); };
1a9978ed
DM		 3692 warn $@ if $@; # just to be sure - should not happen
3693 }
3fa83edf 3694
6158271d 3695 # generate firewall rules for QEMU VMs
0a0ba19e 3696 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 3697 eval {
3698 my $conf = $vmdata->{qemu}->{$vmid};
3699 my $vmfw_conf = $vmfw_configs->{$vmid};
bd60a824 3700 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
1a9978ed 3701
0a0ba19e 3702 foreach my $netid (sort keys %$conf) {
1a9978ed
DM		 3703 next if $netid !~ m/^net(\d+)$/;
3704 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3705 next if !$net->{firewall};
1a9978ed 3706
ad722fb4 3707 my $iface = "tap${vmid}i$1";
1a9978ed
DM		 3708 my $macaddr = $net->{macaddr};
3709 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
ad722fb4 3710 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3711 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
ad722fb4 3712 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed
DM		 3713 }
3714 };
3715 warn $@ if $@; # just to be sure - should not happen
3fa83edf 3716 }
c8301d63 3717
3b4882dc 3718 # generate firewall rules for LXC containers
0a0ba19e 3719 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
ad722fb4
FG		 3720 eval {
3721 my $conf = $vmdata->{lxc}->{$vmid};
3722 my $vmfw_conf = $vmfw_configs->{$vmid};
3723 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
3724
3725 foreach my $netid (sort keys %$conf) {
3726 next if $netid !~ m/^net(\d+)$/;
3727 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3728 next if !$net->{firewall};
3729
3730 my $iface = "veth${vmid}i$1";
3731 my $macaddr = $net->{hwaddr};
3732 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3733 $vmfw_conf, $vmid, 'IN', $ipversion);
3734 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3735 $vmfw_conf, $vmid, 'OUT', $ipversion);
3736 }
3737 };
3738 warn $@ if $@; # just to be sure - should not happen
3b4882dc
AG		 3739 }
3740
ad722fb4 3741 if (ruleset_chain_exist($ruleset, "PVEFW-IPS")){
1e9c5070 3742 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS");
097820b0
AD		 3743 }
3744
147dd882
WB		 3745 return $ruleset;
3746}
3747
ebf72e49
WB		 3748sub mac_to_linklocal {
3749 my ($macaddr) = @_;
3750 my @parts = split(/:/, $macaddr);
3751 # The standard link local address uses the fe80::/64 prefix with the
3752 # modified EUI-64 identifier derived from the MAC address by flipping the
3753 # universal/local bit and inserting FF:FE in the middle.
3754 # See RFC 4291.
3755 $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02);
3756 my @meui64 = (@parts[0,1,2], 'ff', 'fe', @parts[3,4,5]);
3757 return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]";
3758}
3759
147dd882
WB		 3760sub compile_ipsets {
3761 my ($cluster_conf, $vmfw_configs, $vmdata) = @_;
3762
3763 my $localnet;
3764 if ($cluster_conf->{aliases}->{local_network}) {
3765 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3766 } else {
3767 my $localnet_ver;
3768 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3769
75a12a9d 3770 $cluster_conf->{aliases}->{local_network} = {
147dd882
WB		 3771 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
3772 }
3773
3774 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3775
3776
3777 my $ipset_ruleset = {};
3778
3779 # generate ipsets for QEMU VMs
3780 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3781 eval {
3782 my $conf = $vmdata->{qemu}->{$vmid};
3783 my $vmfw_conf = $vmfw_configs->{$vmid};
3784 return if !$vmfw_conf;
3785
74601077
WB		 3786 # When the 'ipfilter' option is enabled every device for which there
3787 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3788 # ipset.
3789 # The reason is that ipfilter ipsets are always filled with standard
3790 # IPv6 link-local filters.
3791 my $ipsets = $vmfw_conf->{ipset};
3792 my $implicit_sets = {};
3793
ebf72e49
WB		 3794 my $device_ips = {};
3795 foreach my $netid (keys %$conf) {
3796 next if $netid !~ m/^net(\d+)$/;
3797 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3798 next if !$net->{firewall};
3799
74601077
WB		 3800 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3801 $implicit_sets->{"ipfilter-$netid"} = [];
3802 }
3803
ebf72e49
WB		 3804 my $macaddr = $net->{macaddr};
3805 my $linklocal = mac_to_linklocal($macaddr);
3806 $device_ips->{$netid} = [
3807 { cidr => $linklocal },
3808 { cidr => 'fe80::/10', nomatch => 1 }
3809 ];
3810 }
3811
74601077
WB		 3812 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3813 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
147dd882
WB		 3814 };
3815 warn $@ if $@; # just to be sure - should not happen
3816 }
3817
3818 # generate firewall rules for LXC containers
3819 foreach my $vmid (keys %{$vmdata->{lxc}}) {
aa229652
WB		 3820 eval {
3821 my $conf = $vmdata->{lxc}->{$vmid};
3822 my $vmfw_conf = $vmfw_configs->{$vmid};
3823 return if !$vmfw_conf;
147dd882 3824
74601077
WB		 3825 # When the 'ipfilter' option is enabled every device for which there
3826 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3827 # ipset.
3828 # The reason is that ipfilter ipsets are always filled with standard
383fe679
WB		 3829 # IPv6 link-local filters, as well as the IP addresses configured
3830 # for the container.
74601077
WB		 3831 my $ipsets = $vmfw_conf->{ipset};
3832 my $implicit_sets = {};
3833
ebf72e49
WB		 3834 my $device_ips = {};
3835 foreach my $netid (keys %$conf) {
3836 next if $netid !~ m/^net(\d+)$/;
a7c85d56 3837 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
ebf72e49
WB		 3838 next if !$net->{firewall};
3839
74601077
WB		 3840 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3841 $implicit_sets->{"ipfilter-$netid"} = [];
3842 }
3843
ebf72e49
WB		 3844 my $macaddr = $net->{hwaddr};
3845 my $linklocal = mac_to_linklocal($macaddr);
383fe679 3846 my $set = $device_ips->{$netid} = [
ebf72e49
WB		 3847 { cidr => $linklocal },
3848 { cidr => 'fe80::/10', nomatch => 1 }
3849 ];
37ef1ce1 3850 if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) {
383fe679
WB		 3851 push @$set, { cidr => $1 };
3852 }
37ef1ce1 3853 if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) {
383fe679
WB		 3854 push @$set, { cidr => $1 };
3855 }
ebf72e49
WB		 3856 }
3857
74601077
WB		 3858 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3859 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
aa229652
WB		 3860 };
3861 warn $@ if $@; # just to be sure - should not happen
147dd882
WB		 3862 }
3863
74601077 3864 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset});
27083984 3865
147dd882 3866 return $ipset_ruleset;
3fa83edf
DM		 3867}
3868
c5e8b008 3869sub compile_ebtables_filter {
40af93c4 3870 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata) = @_;
c5e8b008 3871
2549e7ef 3872 if (!($cluster_conf->{options}->{ebtables} // 1)) {
84025e99
SI		 3873 return {};
3874 }
c5e8b008
AD		 3875
3876 my $ruleset = {};
3877
3878 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3879
c5e8b008
AD		 3880 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3881 #for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED', to speedup rules
3882 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv4', '-j ACCEPT');
3883 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv6', '-j ACCEPT');
3884 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-o fwln+', '-j PVEFW-FWBR-OUT');
3885
3886 # generate firewall rules for QEMU VMs
2e30c5c7 3887 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
c5e8b008
AD		 3888 eval {
3889 my $conf = $vmdata->{qemu}->{$vmid};
3890 my $vmfw_conf = $vmfw_configs->{$vmid};
3891 return if !$vmfw_conf;
401c141b 3892 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3893
4a1072dd 3894 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3895 next if $netid !~ m/^net(\d+)$/;
3896 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3897 next if !$net->{firewall};
3898 my $iface = "tap${vmid}i$1";
3899 my $macaddr = $net->{macaddr};
401c141b
AD		 3900 my $arpfilter = [];
3901 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3902 foreach my $ipaddr (@$ipset) {
3903 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3904 next if !$ip || ($version && $version != 4);
3905 push(@$arpfilter, $ip);
3906 }
3907 }
3908 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3909 }
3910 };
3911 warn $@ if $@; # just to be sure - should not happen
3912 }
3913
3914 # generate firewall rules for LXC containers
2e30c5c7 3915 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
c5e8b008
AD		 3916 eval {
3917 my $conf = $vmdata->{lxc}->{$vmid};
3918
3919 my $vmfw_conf = $vmfw_configs->{$vmid};
3920 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
401c141b 3921 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3922
4a1072dd 3923 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3924 next if $netid !~ m/^net(\d+)$/;
3925 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3926 next if !$net->{firewall};
3927 my $iface = "veth${vmid}i$1";
3928 my $macaddr = $net->{hwaddr};
401c141b
AD		 3929 my $arpfilter = [];
3930 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3931 foreach my $ipaddr (@$ipset) {
3932 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3933 next if !$ip || ($version && $version != 4);
3934 push(@$arpfilter, $ip);
3935 }
3936 }
03984808 3937 if (defined(my $ip = $net->{ip}) && $vmfw_conf->{options}->{ipfilter}) {
a9068b2d
TL		 3938 # ebtables changes this to a .0/MASK network but we just
3939 # want the address here, no network - see #2193
255698f6 3940 $ip =~ s|/(\d+)$||;
c5a10084
ML		 3941 if ($ip ne 'dhcp') {
3942 push @$arpfilter, $ip;
3943 }
556ae5c1 3944 }
401c141b 3945 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3946 }
3947 };
3948 warn $@ if $@; # just to be sure - should not happen
3949 }
3950
3951 return $ruleset;
3952}
3953
3954sub generate_tap_layer2filter {
401c141b 3955 my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_;
c5e8b008
AD		 3956 my $options = $vmfw_conf->{options};
3957
3958 my $tapchain = $iface."-OUT";
3959
3960 # ebtables remove zeros from mac pairs
3961 $macaddr =~ s/0([0-9a-f])/$1/ig;
3962 $macaddr = lc($macaddr);
3963
3964 ruleset_create_chain($ruleset, $tapchain);
3965
3966 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
3967 ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP');
3968 }
3969
401c141b
AD		 3970 if (@$arpfilter){
3971 my $arpchain = $tapchain."-ARP";
3972 ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain");
3973 ruleset_create_chain($ruleset, $arpchain);
3974
3975 foreach my $ip (@{$arpfilter}) {
3976 ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN');
3977 }
3978 ruleset_addrule($ruleset, $arpchain, '', '-j DROP');
3979 }
3980
c5e8b008 3981 if (defined($options->{layer2_protocols})){
33efd363
AD		 3982 my $protochain = $tapchain."-PROTO";
3983 ruleset_addrule($ruleset, $tapchain, '', "-j $protochain");
3984 ruleset_create_chain($ruleset, $protochain);
3985
c5e8b008 3986 foreach my $proto (split(/,/, $options->{layer2_protocols})) {
33efd363 3987 ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN');
c5e8b008 3988 }
33efd363 3989 ruleset_addrule($ruleset, $protochain, '', '-j DROP');
c5e8b008
AD		 3990 }
3991
33efd363
AD		 3992 ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT');
3993
c5e8b008
AD		 3994 ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT', "-i $iface", "-j $tapchain");
3995}
3996
84025e99
SI		 3997# the parameter $change_only_regex changes two things if defined:
3998# * all chains not matching it will be left intact
3999# * both the $active_chains hash and the returned status_hash have different
4000# structure (they contain a key named 'rules').
3fa83edf 4001sub get_ruleset_status {
40af93c4 4002 my ($ruleset, $active_chains, $digest_fn, $change_only_regex) = @_;
3fa83edf
DM		 4003
4004 my $statushash = {};
4005
4006 foreach my $chain (sort keys %$ruleset) {
84025e99
SI		 4007 my $rules = $ruleset->{$chain};
4008 my $sig = &$digest_fn($rules);
4009 my $oldsig;
9bf7d929 4010
3fa83edf 4011 $statushash->{$chain}->{sig} = $sig;
84025e99
SI		 4012 if (defined($change_only_regex)) {
4013 $oldsig = $active_chains->{$chain}->{sig};
4014 $statushash->{$chain}->{rules} = $rules;
4015 } else {
4016 $oldsig = $active_chains->{$chain};
4017 }
3fa83edf
DM		 4018 if (!defined($oldsig)) {
4019 $statushash->{$chain}->{action} = 'create';
4020 } else {
4021 if ($oldsig eq $sig) {
4022 $statushash->{$chain}->{action} = 'exists';
4023 } else {
4024 $statushash->{$chain}->{action} = 'update';
4025 }
4026 }
84025e99
SI		 4027 if ($verbose) {
4028 print "$statushash->{$chain}->{action} $chain ($sig)\n";
4029 foreach my $cmd (@{$rules}) {
4030 print "\t$cmd\n";
4031 }
3fa83edf
DM		 4032 }
4033 }
4034
4035 foreach my $chain (sort keys %$active_chains) {
84025e99
SI		 4036 next if defined($ruleset->{$chain});
4037 my $action = 'delete';
d9551052 4038 my $sig = $active_chains->{$chain};
84025e99
SI		 4039 if (defined($change_only_regex)) {
4040 $action = 'ignore' if ($chain !~ m/$change_only_regex/);
4041 $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules};
d9551052 4042 $sig = $sig->{sig};
84025e99 4043 }
84025e99
SI		 4044 $statushash->{$chain}->{action} = $action;
4045 $statushash->{$chain}->{sig} = $sig;
4046 print "$action $chain ($sig)\n" if $verbose;
6158271d 4047 }
2a052ee3 4048
3fa83edf
DM		 4049 return $statushash;
4050}
4051
3fa83edf
DM		 4052sub print_sig_rule {
4053 my ($chain, $sig) = @_;
4054
09d5f68e
DM		 4055 # We just use this to store a SHA1 checksum used to detect changes
4056 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 4057}
4058
df7cb349 4059sub get_ruleset_cmdlist {
64e0adf4 4060 my ($ruleset, $iptablescmd, $table) = @_;
3fa83edf 4061
64e0adf4 4062 $table = 'filter' if !$table;
cbb5d6f3 4063
64e0adf4
AD		 4064 my $cmdlist = "*$table\n"; # we pass this to iptables-restore;
4065
4066 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd, $table);
40af93c4 4067 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest);
3fa83edf
DM		 4068
4069 # create missing chains first
4070 foreach my $chain (sort keys %$ruleset) {
4071 my $stat = $statushash->{$chain};
4072 die "internal error" if !$stat;
4073 next if $stat->{action} ne 'create';
886aba9c 4074
3fa83edf
DM		 4075 $cmdlist .= ":$chain - [0:0]\n";
4076 }
4077
64e0adf4 4078 foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
55fad3b7
DM		 4079 my $chain = "PVEFW-$h";
4080 if ($ruleset->{$chain} && !$hooks->{$h}) {
4081 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 4082 }
3fa83edf
DM		 4083 }
4084
4085 foreach my $chain (sort keys %$ruleset) {
4086 my $stat = $statushash->{$chain};
4087 die "internal error" if !$stat;
4088
4089 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
4090 $cmdlist .= "-F $chain\n";
4091 foreach my $cmd (@{$ruleset->{$chain}}) {
4092 $cmdlist .= "$cmd\n";
4093 }
4094 $cmdlist .= print_sig_rule($chain, $stat->{sig});
4095 } elsif ($stat->{action} eq 'delete') {
f5d28682 4096 die "internal error"; # this should not happen
3fa83edf
DM		 4097 } elsif ($stat->{action} eq 'exists') {
4098 # do nothing
4099 } else {
4100 die "internal error - unknown status '$stat->{action}'";
4101 }
4102 }
4103
f5d28682
DM		 4104 foreach my $chain (keys %$statushash) {
4105 next if $statushash->{$chain}->{action} ne 'delete';
4106 $cmdlist .= "-F $chain\n";
4107 }
4108 foreach my $chain (keys %$statushash) {
4109 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 4110 next if $chain eq 'PVEFW-INPUT';
4111 next if $chain eq 'PVEFW-OUTPUT';
4112 next if $chain eq 'PVEFW-FORWARD';
64e0adf4 4113 next if $chain eq 'PVEFW-PREROUTING';
f5d28682
DM		 4114 $cmdlist .= "-X $chain\n";
4115 }
4116
64e0adf4 4117 my $changes = $cmdlist ne "*$table\n" ? 1 : 0;
4bd0a9c4 4118
3fa83edf
DM		 4119 $cmdlist .= "COMMIT\n";
4120
3f95d14a 4121 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 4122}
4123
d4a23c88 4124my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/;
84025e99 4125
151c209e 4126sub get_ebtables_cmdlist {
40af93c4 4127 my ($ruleset) = @_;
151c209e
AD		 4128
4129 my $changes = 0;
4130 my $cmdlist = "*filter\n";
4131
84025e99
SI		 4132 my $active_chains = ebtables_get_chains();
4133 my $statushash = get_ruleset_status($ruleset, $active_chains,
40af93c4 4134 \&iptables_chain_digest,
84025e99 4135 $pve_ebtables_chainname_regex);
151c209e 4136
84025e99
SI		 4137 # create chains first and make sure PVE rules are evaluated if active
4138 my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD';
4139 my $pve_include = 0;
4140 foreach my $chain (sort keys %$statushash) {
4141 next if ($statushash->{$chain}->{action} eq 'delete');
151c209e 4142 $cmdlist .= ":$chain ACCEPT\n";
84025e99 4143 $pve_include = 1 if ($chain eq 'PVEFW-FORWARD');
151c209e
AD		 4144 }
4145
84025e99 4146 foreach my $chain (sort keys %$statushash) {
151c209e 4147 my $stat = $statushash->{$chain};
84025e99 4148 $changes = 1 if ($stat->{action} !~ 'ignore|exists');
defdf28e 4149 next if ($stat->{action} eq 'delete');
151c209e 4150
84025e99
SI		 4151 foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) {
4152 if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) {
4153 next if ! $pve_include;
4154 $pve_include = 0;
4155 }
151c209e
AD		 4156 $cmdlist .= "$cmd\n";
4157 }
4158 }
84025e99 4159 $cmdlist .= "$append_pve_to_forward\n" if $pve_include;
151c209e
AD		 4160
4161 return wantarray ? ($cmdlist, $changes) : $cmdlist;
4162}
4163
34cdedfa 4164sub get_ipset_cmdlist {
40af93c4 4165 my ($ruleset) = @_;
34cdedfa
AD		 4166
4167 my $cmdlist = "";
4168
dd7a13fd
DM		 4169 my $delete_cmdlist = "";
4170
4bd0a9c4 4171 my $active_chains = ipset_get_chains();
40af93c4 4172 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest);
34cdedfa 4173
e34d0e58 4174 # remove stale _swap chains
30f1b100
DM		 4175 foreach my $chain (keys %$active_chains) {
4176 if ($chain =~ m/^PVEFW-\S+_swap$/) {
4177 $cmdlist .= "destroy $chain\n";
4178 }
4179 }
4180
c69cf614 4181 foreach my $chain (keys %$ruleset) {
c69cf614
DM		 4182 my $stat = $statushash->{$chain};
4183 die "internal error" if !$stat;
4184
4185 if ($stat->{action} eq 'create') {
4186 foreach my $cmd (@{$ruleset->{$chain}}) {
4187 $cmdlist .= "$cmd\n";
4188 }
4189 }
4190 }
4191
4192 foreach my $chain (keys %$ruleset) {
6d959e3f
DM		 4193 my $stat = $statushash->{$chain};
4194 die "internal error" if !$stat;
34cdedfa 4195
dd7a13fd
DM		 4196 if ($stat->{action} eq 'update') {
4197 my $chain_swap = $chain."_swap";
cbb5d6f3 4198
dd7a13fd
DM		 4199 foreach my $cmd (@{$ruleset->{$chain}}) {
4200 $cmd =~ s/$chain/$chain_swap/;
4201 $cmdlist .= "$cmd\n";
34cdedfa 4202 }
dd7a13fd
DM		 4203 $cmdlist .= "swap $chain_swap $chain\n";
4204 $cmdlist .= "flush $chain_swap\n";
4205 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 4206 }
dd7a13fd 4207 }
3f95d14a 4208
88c26d5e 4209 # the remove unused chains
c69cf614 4210 foreach my $chain (keys %$statushash) {
dd7a13fd 4211 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 4212
dd7a13fd
DM		 4213 $delete_cmdlist .= "flush $chain\n";
4214 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 4215 }
4216
dd7a13fd 4217 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 4218
dd7a13fd 4219 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 4220}
4221
6b9f68a2 4222sub apply_ruleset {
40af93c4 4223 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = @_;
6b9f68a2
DM		 4224
4225 enable_bridge_firewall();
4226
cbb5d6f3 4227 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
40af93c4 4228 get_ipset_cmdlist($ipset_ruleset);
6b9f68a2 4229
64e0adf4
AD		 4230 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset->{filter});
4231 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6->{filter}, "ip6tables");
40af93c4 4232 my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset);
64e0adf4
AD		 4233 my ($cmdlist_raw, $changes_raw) = get_ruleset_cmdlist($ruleset->{raw}, undef, 'raw');
4234 my ($cmdlistv6_raw, $changesv6_raw) = get_ruleset_cmdlist($rulesetv6->{raw}, "ip6tables", 'raw');
2a052ee3 4235
81a0bf43
DM		 4236 if ($verbose) {
4237 if ($ipset_changes) {
4238 print "ipset changes:\n";
4239 print $ipset_create_cmdlist if $ipset_create_cmdlist;
4240 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
4241 }
3f95d14a 4242
81a0bf43
DM		 4243 if ($changes) {
4244 print "iptables changes:\n";
4245 print $cmdlist;
4246 }
17da5c0f
AD		 4247
4248 if ($changesv6) {
4249 print "ip6tables changes:\n";
4250 print $cmdlistv6;
4251 }
151c209e 4252
64e0adf4
AD		 4253 if ($changes_raw) {
4254 print "iptables table raw changes:\n";
4255 print $cmdlist_raw;
4256 }
4257
4258 if ($changesv6_raw) {
4259 print "ip6tables table raw changes:\n";
4260 print $cmdlistv6_raw;
4261 }
4262
151c209e
AD		 4263 if ($ebtables_changes) {
4264 print "ebtables changes:\n";
4265 print $ebtables_cmdlist;
4266 }
81a0bf43 4267 }
3fa83edf 4268
259db1e6
DM		 4269 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
4270 PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || '');
4271
2a052ee3 4272 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 4273
259db1e6
DM		 4274 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
4275 PVE::Tools::file_set_contents($tmpfile, $cmdlist || '');
4276
3fa83edf 4277 iptables_restore_cmdlist($cmdlist);
259db1e6 4278
64e0adf4
AD		 4279 $tmpfile = "$pve_fw_status_dir/ip4cmdlistraw";
4280 PVE::Tools::file_set_contents($tmpfile, $cmdlist_raw || '');
4281
4282 iptables_restore_cmdlist($cmdlist_raw, 'raw');
4283
259db1e6
DM		 4284 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
4285 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
4286
17da5c0f 4287 ip6tables_restore_cmdlist($cmdlistv6);
3fa83edf 4288
64e0adf4
AD		 4289 $tmpfile = "$pve_fw_status_dir/ip6cmdlistraw";
4290 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6_raw || '');
4291
4292 ip6tables_restore_cmdlist($cmdlistv6_raw, 'raw');
4293
259db1e6
DM		 4294 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
4295 PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
4296
dd7a13fd 4297 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 4298
151c209e
AD		 4299 ebtables_restore_cmdlist($ebtables_cmdlist);
4300
4301 $tmpfile = "$pve_fw_status_dir/ebtablescmdlist";
4302 PVE::Tools::file_set_contents($tmpfile, $ebtables_cmdlist || '');
4303
6158271d 4304 # test: re-read status and check if everything is up to date
64e0adf4 4305 my $ruleset_filter = $ruleset->{filter};
4bd0a9c4 4306 my $active_chains = iptables_get_chains();
64e0adf4 4307 my $statushash = get_ruleset_status($ruleset_filter, $active_chains, \&iptables_chain_digest);
3fa83edf
DM		 4308
4309 my $errors;
64e0adf4 4310 foreach my $chain (sort keys %$ruleset_filter) {
3fa83edf
DM		 4311 my $stat = $statushash->{$chain};
4312 if ($stat->{action} ne 'exists') {
4313 warn "unable to update chain '$chain'\n";
4314 $errors = 1;
4315 }
4316 }
b6360c3f 4317
64e0adf4 4318 my $rulesetv6_filter = $rulesetv6->{filter};
17da5c0f 4319 my $active_chainsv6 = iptables_get_chains("ip6tables");
64e0adf4 4320 my $statushashv6 = get_ruleset_status($rulesetv6_filter, $active_chainsv6, \&iptables_chain_digest);
17da5c0f 4321
64e0adf4 4322 foreach my $chain (sort keys %$rulesetv6_filter) {
17da5c0f
AD		 4323 my $stat = $statushashv6->{$chain};
4324 if ($stat->{action} ne 'exists') {
4325 warn "unable to update chain '$chain'\n";
4326 $errors = 1;
4327 }
4328 }
4329
64e0adf4
AD		 4330 my $ruleset_raw = $ruleset->{raw};
4331 my $active_chains_raw = iptables_get_chains(undef, 'raw');
4332 my $statushash_raw = get_ruleset_status($ruleset_raw, $active_chains_raw, \&iptables_chain_digest);
4333
4334 foreach my $chain (sort keys %$ruleset_raw) {
4335 my $stat = $statushash_raw->{$chain};
4336 if ($stat->{action} ne 'exists') {
4337 warn "unable to update chain '$chain'\n";
4338 $errors = 1;
4339 }
4340 }
4341
4342 my $rulesetv6_raw = $rulesetv6->{raw};
4343 my $active_chainsv6_raw = iptables_get_chains("ip6tables", 'raw');
4344 my $statushashv6_raw = get_ruleset_status($rulesetv6_raw, $active_chainsv6_raw, \&iptables_chain_digest);
4345
4346 foreach my $chain (sort keys %$rulesetv6_raw) {
4347 my $stat = $statushashv6_raw->{$chain};
4348 if ($stat->{action} ne 'exists') {
4349 warn "unable to update chain '$chain'\n";
4350 $errors = 1;
4351 }
4352 }
4353
151c209e 4354 my $active_ebtables_chains = ebtables_get_chains();
84025e99
SI		 4355 my $ebtables_statushash = get_ruleset_status($ebtables_ruleset,
4356 $active_ebtables_chains, \&iptables_chain_digest,
40af93c4 4357 $pve_ebtables_chainname_regex);
151c209e
AD		 4358
4359 foreach my $chain (sort keys %$ebtables_ruleset) {
4360 my $stat = $ebtables_statushash->{$chain};
4361 if ($stat->{action} ne 'exists') {
4362 warn "ebtables : unable to update chain '$chain'\n";
4363 $errors = 1;
4364 }
4365 }
4366
3fa83edf 4367 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 4368
4369 update_nf_conntrack_max($hostfw_conf);
4370
4371 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
4372
ac5dd88e
AD		 4373 update_nf_conntrack_tcp_timeout_syn_recv($hostfw_conf);
4374
6c27f4f3 4375 update_nf_conntrack_logging($hostfw_conf);
b6360c3f
DM		 4376}
4377
490cdead
DM		 4378sub update_nf_conntrack_max {
4379 my ($hostfw_conf) = @_;
4380
b2ec31cc 4381 my $max = 262144; # reasonable default (2^16 * 4), see nf_conntrack-sysctl docs
490cdead
DM		 4382
4383 my $options = $hostfw_conf->{options} || {};
4384
4385 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
4386 $max = $options->{nf_conntrack_max};
4387 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
4388 }
4389
4390 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
4391 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
4392
4393 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
4394
4395 if ($current != $max) {
4396 my $hashsize = int($max/4);
4397 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
4398 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
4399 }
4400}
4401
28c082a1
AD		 4402sub update_nf_conntrack_tcp_timeout_established {
4403 my ($hostfw_conf) = @_;
4404
4405 my $options = $hostfw_conf->{options} || {};
4406
4407 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
4408
4409 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
4410}
4411
ac5dd88e
AD		 4412sub update_nf_conntrack_tcp_timeout_syn_recv {
4413 my ($hostfw_conf) = @_;
4414
4415 my $options = $hostfw_conf->{options} || {};
4416
4417 my $value = defined($options->{nf_conntrack_tcp_timeout_syn_recv}) ? $options->{nf_conntrack_tcp_timeout_syn_recev} : 60;
4418
4419 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_syn_recv", $value);
4420}
4421
6c27f4f3
DL		 4422my $log_nf_conntrack_enabled = undef;
4423sub update_nf_conntrack_logging {
4424 my ($hostfw_conf) = @_;
4425
4426 my $options = $hostfw_conf->{options} || {};
4427 my $value = $options->{log_nf_conntrack} || 0;
4428 if (!defined($log_nf_conntrack_enabled)
4429 || $value != $log_nf_conntrack_enabled)
4430 {
4431 my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack";
4432 PVE::Tools::file_set_contents($tmpfile, $value);
4433
c1031ab1 4434 run_command([qw(systemctl try-reload-or-restart pvefw-logger.service)]);
6c27f4f3
DL		 4435 $log_nf_conntrack_enabled = $value;
4436 }
4437}
4438
c4a2e5ae
DM		 4439sub remove_pvefw_chains {
4440
7b7b2654
AD		 4441 PVE::Firewall::remove_pvefw_chains_iptables("iptables");
4442 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
64e0adf4
AD		 4443 PVE::Firewall::remove_pvefw_chains_iptables("iptables", "raw");
4444 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables", "raw");
7b7b2654 4445 PVE::Firewall::remove_pvefw_chains_ipset();
0e8af63d 4446 PVE::Firewall::remove_pvefw_chains_ebtables();
7b7b2654
AD		 4447
4448}
4449
4450sub remove_pvefw_chains_iptables {
64e0adf4 4451 my ($iptablescmd, $table) = @_;
7b7b2654 4452
64e0adf4
AD		 4453 $table = 'filter' if !$table;
4454
4455 my ($chash, $hooks) = iptables_get_chains($iptablescmd, $table);
4456 my $cmdlist = "*$table\n";
c4a2e5ae 4457
64e0adf4 4458 foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
c4a2e5ae
DM		 4459 if ($hooks->{$h}) {
4460 $cmdlist .= "-D $h -j PVEFW-$h\n";
4461 }
4462 }
cbb5d6f3 4463
c4a2e5ae
DM		 4464 foreach my $chain (keys %$chash) {
4465 $cmdlist .= "-F $chain\n";
4466 }
4467
4468 foreach my $chain (keys %$chash) {
4469 $cmdlist .= "-X $chain\n";
4470 }
4471 $cmdlist .= "COMMIT\n";
4472
7b7b2654 4473 if($iptablescmd eq "ip6tables") {
64e0adf4 4474 ip6tables_restore_cmdlist($cmdlist, $table);
7b7b2654 4475 } else {
64e0adf4 4476 iptables_restore_cmdlist($cmdlist, $table);
7b7b2654
AD		 4477 }
4478}
4479
4480sub remove_pvefw_chains_ipset {
55fad3b7
DM		 4481
4482 my $ipset_chains = ipset_get_chains();
4483
7b7b2654 4484 my $cmdlist = "";
75a12a9d 4485
55fad3b7 4486 foreach my $chain (keys %$ipset_chains) {
88c26d5e
DM		 4487 $cmdlist .= "flush $chain\n";
4488 $cmdlist .= "destroy $chain\n";
55fad3b7
DM		 4489 }
4490
7b7b2654 4491 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 4492}
4493
0e8af63d
FG		 4494sub remove_pvefw_chains_ebtables {
4495 # apply empty ruleset = remove all our chains
4496 ebtables_restore_cmdlist(get_ebtables_cmdlist({}));
4497}
4498
8b453a09
DM		 4499sub init {
4500 my $cluster_conf = load_clusterfw_conf();
4501 my $cluster_options = $cluster_conf->{options};
4502 my $enable = $cluster_options->{enable};
4503
4504 return if !$enable;
4505
4506 # load required modules here
4507}
4508
6b9f68a2 4509sub update {
6b9f68a2 4510 my $code = sub {
3dfa8a7f
DM		 4511
4512 my $cluster_conf = load_clusterfw_conf();
4513 my $cluster_options = $cluster_conf->{options};
4514
55fad3b7 4515 if (!$cluster_options->{enable}) {
b22130d3 4516 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 4517 return;
4518 }
4519
50f9a28d 4520 my $hostfw_conf = load_hostfw_conf($cluster_conf);
3dfa8a7f 4521
c5e8b008 4522 my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 4523
151c209e 4524 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
6b9f68a2
DM		 4525 };
4526
4527 run_locked($code);
4528}
4529
b6360c3f 45301;
Firewall test scripts