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d/control: bump pve-cluster dependency for new lock methods
[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/^${security_group_name_pattern}$/);
312ae516
FG		 1626 &$add_error('action', "security group '$action' does not exist")
1627 if $action && !defined($cluster_conf->{groups}->{$action});
6d9246e7
DM		 1628 } else {
1629 &$add_error('type', "unknown rule type '$type'");
1630 }
7ca36671 1631 }
e34d0e58 1632
dba740a9 1633 if ($rule->{iface}) {
bfc488f6 1634 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1635 if !$allow_iface;
dba740a9 1636 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1637 &$add_error('iface', $@) if $@;
fdefeeab 1638 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
b6b8e6ad
DM		 1639 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1640 if $rule->{iface} !~ m/^net(\d+)$/;
b6b8e6ad
DM		 1641 }
1642 }
7ca36671
DM		 1643
1644 if ($rule->{macro}) {
6d9246e7
DM		 1645 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1646 $rule->{macro} = $preferred_name;
1647 } else {
1648 &$add_error('macro', "unknown macro '$rule->{macro}'");
1649 }
1650 }
1651
1652 if ($rule->{proto}) {
1653 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1654 &$add_error('proto', $@) if $@;
041b9277
DM		 1655 &$set_ip_version(4) if $rule->{proto} eq 'icmp';
1656 &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
6d9246e7 1657 }
7ca36671
DM		 1658
1659 if ($rule->{dport}) {
a1c04f71 1660 eval { parse_port_name_number_or_range($rule->{dport}, 1); };
6d9246e7 1661 &$add_error('dport', $@) if $@;
48e3963e 1662 my $proto = $rule->{proto};
6d9246e7 1663 &$add_error('proto', "missing property - 'dport' requires this property")
48e3963e
WB		 1664 if !$proto;
1665 &$add_error('dport', "protocol '$proto' does not support ports")
1666 if !$PROTOCOLS_WITH_PORTS->{$proto} &&
1667 $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
6d9246e7 1668 }
7ca36671
DM		 1669
1670 if ($rule->{sport}) {
a1c04f71 1671 eval { parse_port_name_number_or_range($rule->{sport}, 0); };
6d9246e7 1672 &$add_error('sport', $@) if $@;
48e3963e 1673 my $proto = $rule->{proto};
6d9246e7 1674 &$add_error('proto', "missing property - 'sport' requires this property")
48e3963e
WB		 1675 if !$proto;
1676 &$add_error('sport', "protocol '$proto' does not support ports")
1677 if !$PROTOCOLS_WITH_PORTS->{$proto};
7ca36671
DM		 1678 }
1679
1680 if ($rule->{source}) {
75a12a9d 1681 eval {
041b9277
DM		 1682 my $source_ipversion = parse_address_list($rule->{source});
1683 &$set_ip_version($source_ipversion);
1684 };
6d9246e7 1685 &$add_error('source', $@) if $@;
ae029a88 1686 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM		 1687 }
1688
1689 if ($rule->{dest}) {
75a12a9d
TL		 1690 eval {
1691 my $dest_ipversion = parse_address_list($rule->{dest});
041b9277 1692 &$set_ip_version($dest_ipversion);
9e2205e5 1693 };
6d9246e7 1694 &$add_error('dest', $@) if $@;
ae029a88 1695 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM		 1696 }
1697
35d1d6da
DM		 1698 $rule->{ipversion} = $ipversion if $ipversion;
1699
a523e057 1700 if ($rule->{macro} && !$error_count) {
35d1d6da 1701 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
6d9246e7
DM		 1702 if (my $err = $@) {
1703 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1704 my $eh = $err->{errors};
1705 foreach my $p (keys %$eh) {
1706 &$add_error($p, $eh->{$p});
1707 }
1708 } else {
1709 &$add_error('macro', "$err");
1710 }
1711 }
9a2745a0
DM		 1712 }
1713
6d9246e7
DM		 1714 $rule->{errors} = $errors if $error_count;
1715
7ca36671
DM		 1716 return $rule;
1717}
1718
9c7e0858
DM		 1719sub copy_rule_data {
1720 my ($rule, $param) = @_;
1721
1722 foreach my $k (keys %$rule_properties) {
1723 if (defined(my $v = $param->{$k})) {
1724 if ($v eq '' || $v eq '-') {
1725 delete $rule->{$k};
1726 } else {
1727 $rule->{$k} = $v;
1728 }
9c7e0858
DM		 1729 }
1730 }
7ca36671 1731
9c7e0858
DM		 1732 return $rule;
1733}
1734
9f6845cf
DM		 1735sub rules_modify_permissions {
1736 my ($rule_env) = @_;
1737
1738 if ($rule_env eq 'host') {
1739 return {
1740 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1741 };
1742 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1743 return {
1744 check => ['perm', '/', [ 'Sys.Modify' ]],
1745 };
3b4882dc 1746 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1747 return {
1748 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1749 }
1750 }
1751
1752 return undef;
1753}
1754
1755sub rules_audit_permissions {
1756 my ($rule_env) = @_;
1757
1758 if ($rule_env eq 'host') {
1759 return {
1760 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1761 };
1762 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1763 return {
1764 check => ['perm', '/', [ 'Sys.Audit' ]],
1765 };
3b4882dc 1766 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1767 return {
1768 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1769 }
1770 }
1771
1772 return undef;
1773}
1774
9c7e0858 1775# core functions
780bcc0f
DM		 1776my $bridge_firewall_enabled = 0;
1777
1778sub enable_bridge_firewall {
1779
1780 return if $bridge_firewall_enabled; # only once
1781
5f0a912c
DM		 1782 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1783 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1784
6a8a75db
DM		 1785 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1786 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1787
780bcc0f
DM		 1788 $bridge_firewall_enabled = 1;
1789}
1790
b16e818e 1791sub iptables_restore_cmdlist {
64e0adf4 1792 my ($cmdlist, $table) = @_;
3a616aa0 1793
64e0adf4
AD		 1794 $table = 'filter' if !$table;
1795 run_command(['iptables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
3a616aa0
AD		 1796}
1797
17da5c0f 1798sub ip6tables_restore_cmdlist {
64e0adf4 1799 my ($cmdlist, $table) = @_;
17da5c0f 1800
64e0adf4
AD		 1801 $table = 'filter' if !$table;
1802 run_command(['ip6tables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
17da5c0f
AD		 1803}
1804
34cdedfa
AD		 1805sub ipset_restore_cmdlist {
1806 my ($cmdlist) = @_;
1807
bb6ebf3b 1808 run_command(['ipset', 'restore'], input => $cmdlist, errmsg => "ipset_restore_cmdlist");
34cdedfa
AD		 1809}
1810
151c209e
AD		 1811sub ebtables_restore_cmdlist {
1812 my ($cmdlist) = @_;
1813
c1031ab1 1814 run_command(['ebtables-restore'], input => $cmdlist, errmsg => "ebtables_restore_cmdlist");
151c209e
AD		 1815}
1816
de2a57cd 1817sub iptables_get_chains {
64e0adf4 1818 my ($iptablescmd, $t) = @_;
17da5c0f
AD		 1819
1820 $iptablescmd = "iptables" if !$iptablescmd;
64e0adf4 1821 $t = 'filter' if !$t;
de2a57cd
DM		 1822
1823 my $res = {};
1824
1825 # check what chains we want to track
1826 my $is_pvefw_chain = sub {
1827 my $name = shift;
1828
dec84fcd
DM		 1829 return 1 if $name =~ m/^PVEFW-\S+$/;
1830
a3ded5cd 1831 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
954f24b1 1832
a3ded5cd 1833 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
954f24b1 1834
a3ded5cd 1835 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
a89dfcc6 1836 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
de2a57cd
DM		 1837
1838 return undef;
1839 };
1840
1841 my $table = '';
1842
c4a2e5ae
DM		 1843 my $hooks = {};
1844
de2a57cd
DM		 1845 my $parser = sub {
1846 my $line = shift;
1847
1848 return if $line =~ m/^#/;
1849 return if $line =~ m/^\s*$/;
1850
1851 if ($line =~ m/^\*(\S+)$/) {
1852 $table = $1;
1853 return;
1854 }
1855
64e0adf4 1856 return if $table ne $t;
de2a57cd
DM		 1857
1858 if ($line =~ m/^:(\S+)\s/) {
1859 my $chain = $1;
1860 return if !&$is_pvefw_chain($chain);
3fa83edf 1861 $res->{$chain} = "unknown";
09d5f68e 1862 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1863 my ($chain, $sig) = ($1, $2);
de2a57cd 1864 return if !&$is_pvefw_chain($chain);
3fa83edf 1865 $res->{$chain} = $sig;
64e0adf4 1866 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD|PREROUTING)\s+-j\s+PVEFW-\1$/) {
c4a2e5ae 1867 $hooks->{$1} = 1;
de2a57cd
DM		 1868 } else {
1869 # simply ignore the rest
1870 return;
1871 }
1872 };
1873
c1031ab1 1874 run_command(["$iptablescmd-save"], outfunc => $parser);
de2a57cd 1875
c4a2e5ae 1876 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1877}
1878
9bf7d929
DM		 1879sub iptables_chain_digest {
1880 my ($rules) = @_;
1881 my $digest = Digest::SHA->new('sha1');
1882 foreach my $rule (@$rules) { # order is important
1883 $digest->add($rule);
1884 }
1885 return $digest->b64digest;
1886}
1887
3f95d14a
DM		 1888sub ipset_chain_digest {
1889 my ($rules) = @_;
4bd0a9c4 1890
3f95d14a
DM		 1891 my $digest = Digest::SHA->new('sha1');
1892 foreach my $rule (sort @$rules) { # note: sorted
1893 $digest->add($rule);
1894 }
1895 return $digest->b64digest;
1896}
1897
34cdedfa
AD		 1898sub ipset_get_chains {
1899
1900 my $res = {};
1901 my $chains = {};
1902
1903 my $parser = sub {
1904 my $line = shift;
1905
1906 return if $line =~ m/^#/;
1907 return if $line =~ m/^\s*$/;
4b96e877 1908 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1909 my $chain = $1;
1910 $line =~ s/\s+$//; # delete trailing white space
1911 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1912 } else {
1913 # simply ignore the rest
1914 return;
1915 }
1916 };
1917
c1031ab1 1918 run_command(['ipset', 'save'], outfunc => $parser);
34cdedfa 1919
3f95d14a
DM		 1920 # compute digest for each chain
1921 foreach my $chain (keys %$chains) {
1922 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1923 }
1924
1925 return $res;
1926}
1927
151c209e
AD		 1928sub ebtables_get_chains {
1929
1930 my $res = {};
1931 my $chains = {};
151c209e
AD		 1932 my $parser = sub {
1933 my $line = shift;
1934 return if $line =~ m/^#/;
1935 return if $line =~ m/^\s*$/;
fc1f1de9
WB		 1936 if ($line =~ m/^:(\S+)\s\S+$/) {
1937 # Make sure we know chains exist even if they're empty.
1938 $chains->{$1} //= [];
84025e99 1939 } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) {
151c209e
AD		 1940 my $chain = $1;
1941 $line =~ s/\s+$//;
1942 push @{$chains->{$chain}}, $line;
1943 } else {
1944 # simply ignore the rest
1945 return;
1946 }
1947 };
1948
c1031ab1 1949 run_command(['ebtables-save'], outfunc => $parser);
84025e99 1950 # compute digest for each chain and store rules as well
151c209e 1951 foreach my $chain (keys %$chains) {
84025e99
SI		 1952 $res->{$chain}->{rules} = $chains->{$chain};
1953 $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain});
151c209e
AD		 1954 }
1955 return $res;
1956}
1957
180da76c
TW		 1958# substitude action of rule according to action hash
1959sub rule_substitude_action {
1960 my ($rule, $actions) = @_;
1961
1962 if (my $action = $rule->{action}) {
1963 $rule->{action} = $actions->{$action} if defined($actions->{$action});
1964 }
1965}
1966
a44cb745
TW		 1967# generate a src or dst match
1968# $dir(ection) is either d or s
1969sub ipt_gen_src_or_dst_match {
1970 my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_;
1971
1972 my $srcdst;
1973 if ($dir eq 's') {
1974 $srcdst = "src";
1975 } elsif ($dir eq 'd') {
1976 $srcdst = "dst";
1977 } else {
1978 die "ipt_gen_src_or_dst_match: invalid direction $dir \n";
1979 }
1980
1981 my $match;
1982 if ($adr =~ m/^\+/) {
1983 if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
1984 my $name = $1;
1985 my $ipset_chain;
1986 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
1987 $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
1988 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
1989 $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
1990 } else {
1991 die "no such ipset '$name'\n";
1992 }
1993 $match = "-m set --match-set ${ipset_chain} ${srcdst}";
1994 } else {
1995 die "invalid security group name '$adr'\n";
1996 }
1997 } elsif ($adr =~ m/^${ip_alias_pattern}$/){
1998 my $alias = lc($adr);
1999 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
2000 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
2001 die "no such alias '$adr'\n" if !$e;
2002 $match = "-${dir} $e->{cidr}";
2003 } elsif ($adr =~ m/\-/){
2004 $match = "-m iprange --${srcdst}-range $adr";
2005 } else {
2006 $match = "-${dir} $adr";
2007 }
2008
2009 return $match;
2010}
2011
30c390f9
TW		 2012# convert a %rule to an array of iptables commands
2013sub ipt_rule_to_cmds {
2014 my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_;
2015
2016 die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen
2017
2018 my @match = ();
2019
2020 if (defined $rule->{match}) {
2021 push @match, $rule->{match};
2022 } else {
2023 push @match, "-i $rule->{iface_in}" if $rule->{iface_in};
2024 push @match, "-o $rule->{iface_out}" if $rule->{iface_out};
2025
2026 if ($rule->{source}) {
2027 push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf);
2028 }
2029 if ($rule->{dest}) {
2030 push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf);
2031 }
2032
2033 if (my $proto = $rule->{proto}) {
2034 push @match, "-p $proto";
2035
f776d6de
WB		 2036 my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1);
2037 my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0);
30c390f9 2038
f776d6de
WB		 2039 my $add_dport = sub {
2040 return if !$rule->{dport};
3dffed4c 2041
30c390f9
TW		 2042 if ($proto eq 'icmp') {
2043 # Note: we use dport to store --icmp-type
2044 die "unknown icmp-type '$rule->{dport}'\n"
2045 if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}});
2046 push @match, "-m icmp --icmp-type $rule->{dport}";
2047 } elsif ($proto eq 'icmpv6') {
2048 # Note: we use dport to store --icmpv6-type
2049 die "unknown icmpv6-type '$rule->{dport}'\n"
2050 if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}});
2051 push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
2052 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
2053 die "protocol $proto does not have ports\n";
f776d6de
WB		 2054 } elsif ($multidport) {
2055 push @match, "--match multiport", "--dports $rule->{dport}";
30c390f9 2056 } else {
f776d6de 2057 push @match, "--dport $rule->{dport}";
30c390f9 2058 }
f776d6de 2059 };
30c390f9 2060
f776d6de
WB		 2061 my $add_sport = sub {
2062 return if !$rule->{sport};
3dffed4c 2063
30c390f9
TW		 2064 die "protocol $proto does not have ports\n"
2065 if !$PROTOCOLS_WITH_PORTS->{$proto};
f776d6de
WB		 2066 if ($multisport) {
2067 push @match, "--match multiport", "--sports $rule->{sport}";
30c390f9
TW		 2068 } else {
2069 push @match, "--sport $rule->{sport}";
2070 }
f776d6de
WB		 2071 };
2072
3dffed4c 2073 # order matters - single port before multiport!
f776d6de
WB		 2074 $add_dport->() if $multisport;
2075 $add_sport->();
2076 $add_dport->() if !$multisport;
30c390f9
TW		 2077 } elsif ($rule->{dport} || $rule->{sport}) {
2078 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
2079 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
2080 }
2081
2082 push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
2083 }
2084 my $matchstr = scalar(@match) ? join(' ', @match) : "";
2085
2086 my $targetstr;
2087 if (defined $rule->{target}) {
2088 $targetstr = $rule->{target};
2089 } else {
2090 my $action = (defined $rule->{action}) ? $rule->{action} : "";
2091 my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
2092 $targetstr = ($goto) ? "-g $action" : "-j $action";
2093 }
2094
2095 my @iptcmds;
2db2b6aa
TL		 2096 my $log = $rule->{log};
2097 if (defined($log) && $log ne 'nolog') {
3489f8a2
CE		 2098 my $loglevel = $log_level_hash->{$log};
2099 my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel);
30c390f9
TW		 2100 push @iptcmds, "-A $chain $matchstr $logaction";
2101 }
2102 push @iptcmds, "-A $chain $matchstr $targetstr";
2103 return @iptcmds;
2104}
2105
eba0fb64 2106sub ruleset_generate_rule {
3489f8a2 2107 my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_;
eba0fb64 2108
e5076eee
DM		 2109 my $rules;
2110
2111 if ($rule->{macro}) {
35d1d6da 2112 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
e5076eee
DM		 2113 } else {
2114 $rules = [ $rule ];
2115 }
2116
30c390f9
TW		 2117 # update all or nothing
2118 my @ipt_rule_cmds;
2119 foreach my $r (@$rules) {
3489f8a2 2120 push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid);
30c390f9
TW		 2121 }
2122 foreach my $c (@ipt_rule_cmds) {
2123 ruleset_add_ipt_cmd($ruleset, $chain, $c);
2124 }
2125}
2126
3fa83edf
DM		 2127sub ruleset_create_chain {
2128 my ($ruleset, $chain) = @_;
3a616aa0 2129
d050c724 2130 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 2131 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 2132
3fa83edf
DM		 2133 die "chain '$chain' already exists\n" if $ruleset->{$chain};
2134
2135 $ruleset->{$chain} = [];
3a616aa0
AD		 2136}
2137
3fa83edf
DM		 2138sub ruleset_chain_exist {
2139 my ($ruleset, $chain) = @_;
3a616aa0 2140
3fa83edf
DM		 2141 return $ruleset->{$chain} ? 1 : undef;
2142}
3a616aa0 2143
30c390f9
TW		 2144# add an iptables command (like generated by ipt_rule_to_cmds) to a chain
2145sub ruleset_add_ipt_cmd {
2146 my ($ruleset, $chain, $iptcmd) = @_;
2147
2148 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2149
2150 push @{$ruleset->{$chain}}, $iptcmd;
2151}
2152
1e9c5070 2153sub ruleset_addrule {
3489f8a2 2154 my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
1e9c5070 2155
3489f8a2 2156 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1e9c5070 2157
3489f8a2
CE		 2158 if ($log) {
2159 my $loglevel = $log_level_hash->{$log};
2160 my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel);
7f7930f8 2161 push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
3489f8a2
CE		 2162 }
2163 # for stable ebtables digests avoid double-spaces to match ebtables-save output
2164 $match .= ' ' if length($match);
2165 push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
1e9c5070
TW		 2166}
2167
3fa83edf 2168sub ruleset_insertrule {
1e9c5070 2169 my ($ruleset, $chain, $match, $action, $log) = @_;
3a616aa0 2170
3fa83edf 2171 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 2172
1e9c5070 2173 unshift @{$ruleset->{$chain}}, "-A $chain $match $action";
3fa83edf 2174}
3a616aa0 2175
782c4cde
DM		 2176sub get_log_rule_base {
2177 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 2178
782c4cde 2179 $vmid = 0 if !defined($vmid);
7f7930f8 2180 $msg = "" if !defined($msg);
782c4cde 2181
cc37e000
TL		 2182 my $rlimit = '';
2183 if (defined($global_log_ratelimit)) {
2184 $rlimit = "-m limit $global_log_ratelimit ";
2185 }
2186
cbb5d6f3 2187 # Note: we use special format for prefix to pass further
7f7930f8 2188 # info to log daemon (VMID, LOGLEVEL and CHAIN)
cc37e000 2189 return "${rlimit}-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
782c4cde
DM		 2190}
2191
ead850e8 2192sub ruleset_add_chain_policy {
88c26d5e 2193 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 2194
2195 if ($policy eq 'ACCEPT') {
2196
180da76c
TW		 2197 my $rule = { action => 'ACCEPT' };
2198 rule_substitude_action($rule, { ACCEPT => $accept_action});
2199 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
ead850e8
DM		 2200
2201 } elsif ($policy eq 'DROP') {
2202
1e9c5070 2203 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop");
ead850e8 2204
7f7930f8 2205 ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid);
ead850e8 2206 } elsif ($policy eq 'REJECT') {
1e9c5070 2207 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject");
ead850e8 2208
d8d4dd67 2209 ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid);
ead850e8
DM		 2210 } else {
2211 # should not happen
2212 die "internal error: unknown policy '$policy'";
2213 }
2214}
2215
a83abe93 2216sub ruleset_chain_add_ndp {
e8415920 2217 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
a83abe93
WB		 2218 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
2219
1e9c5070 2220 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept);
d7aa51ac 2221 if ($direction ne 'OUT' || $options->{radv}) {
1e9c5070 2222 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept);
d7aa51ac 2223 }
1e9c5070
TW		 2224 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept);
2225 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept);
a83abe93
WB		 2226}
2227
e2943485 2228sub ruleset_chain_add_conn_filters {
27c49e25 2229 my ($ruleset, $chain, $allow_invalid, $accept) = @_;
e2943485 2230
27c49e25
CE		 2231 if (!$allow_invalid) {
2232 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
2233 }
1e9c5070 2234 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept");
e2943485
DM		 2235}
2236
2237sub ruleset_chain_add_input_filters {
88c26d5e 2238 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2428e394
AD		 2239
2240 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 2241 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
2242 ruleset_create_chain($ruleset, "PVEFW-blacklist");
3489f8a2 2243 ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0);
b5831a0d 2244 }
88c26d5e 2245 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1e9c5070 2246 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist");
2428e394 2247 }
e2943485
DM		 2248
2249 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
5b5c42b1 2250 if ($ipversion == 4) {
1e9c5070 2251 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs");
5b5c42b1 2252 }
e2943485
DM		 2253 }
2254
2255 if ($options->{tcpflags}) {
1e9c5070 2256 ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags");
e2943485
DM		 2257 }
2258}
2259
9e15114a 2260sub ruleset_create_vm_chain {
88c26d5e 2261 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 2262
9e15114a 2263 ruleset_create_chain($ruleset, $chain);
b47ecc88 2264 my $accept = generate_nfqueue($options);
3a616aa0 2265
ce15d90b 2266 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
dcafc5fb
WB		 2267 if ($ipversion == 4) {
2268 if ($direction eq 'OUT') {
75a12a9d 2269 ruleset_generate_rule($ruleset, $chain, $ipversion,
dcafc5fb
WB		 2270 { action => 'PVEFW-SET-ACCEPT-MARK',
2271 proto => 'udp', sport => 68, dport => 67 });
2272 } else {
2273 ruleset_generate_rule($ruleset, $chain, $ipversion,
2274 { action => 'ACCEPT',
2275 proto => 'udp', sport => 67, dport => 68 });
2276 }
2277 } elsif ($ipversion == 6) {
2278 if ($direction eq 'OUT') {
2279 ruleset_generate_rule($ruleset, $chain, $ipversion,
2280 { action => 'PVEFW-SET-ACCEPT-MARK',
2281 proto => 'udp', sport => 546, dport => 547 });
2282 } else {
2283 ruleset_generate_rule($ruleset, $chain, $ipversion,
2284 { action => 'ACCEPT',
2285 proto => 'udp', sport => 547, dport => 546 });
2286 }
76a2d1e7 2287 }
dcafc5fb 2288
ce15d90b
DM		 2289 }
2290
b21aca2c
DM		 2291 if ($direction eq 'OUT') {
2292 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1e9c5070 2293 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP");
b21aca2c 2294 }
d7aa51ac 2295 if ($ipversion == 6 && !$options->{radv}) {
1e9c5070 2296 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP");
d7aa51ac 2297 }
808d711d 2298 if ($ipfilter_ipset) {
1e9c5070 2299 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP");
808d711d 2300 }
1e9c5070 2301 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
c29f55c9 2302 }
e8415920
WB		 2303
2304 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept";
2305 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
9e15114a
DM		 2306}
2307
4bc6b5ac 2308sub ruleset_add_group_rule {
aedde2c2 2309 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM		 2310
2311 my $group = $rule->{action};
2312 my $group_chain = "GROUP-$group-$direction";
2313 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 2314 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 2315 }
bfc488f6 2316
f8b12fff 2317 if ($direction eq 'OUT' && $rule->{iface_out}) {
1e9c5070 2318 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain");
f8b12fff 2319 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1e9c5070 2320 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain");
4bc6b5ac 2321 } else {
1e9c5070 2322 ruleset_addrule($ruleset, $chain, "", "-j $group_chain");
4bc6b5ac
DM		 2323 }
2324
1e9c5070 2325 ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action");
4bc6b5ac
DM		 2326}
2327
9e15114a 2328sub ruleset_generate_vm_rules {
3489f8a2 2329 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_;
9e15114a
DM		 2330
2331 my $lc_direction = lc($direction);
c29f55c9 2332
6b8ca015
DM		 2333 my $in_accept = generate_nfqueue($options);
2334
92e976b3
DM		 2335 foreach my $rule (@$rules) {
2336 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 2337 next if !$rule->{enable} || $rule->{errors};
006490cb 2338 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 2339
92e976b3 2340 if ($rule->{type} eq 'group') {
4bc6b5ac 2341 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 2342 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM		 2343 } else {
2344 next if $rule->{type} ne $lc_direction;
921dfb33 2345 eval {
3489f8a2 2346 $rule->{logmsg} = "$rule->{action}: ";
921dfb33 2347 if ($direction eq 'OUT') {
180da76c 2348 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
3489f8a2 2349 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33 2350 } else {
180da76c 2351 rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" });
3489f8a2 2352 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33
DM		 2353 }
2354 };
2355 warn $@ if $@;
4e6112f9 2356 }
3a616aa0 2357 }
9e15114a
DM		 2358}
2359
b47ecc88
AD		 2360sub generate_nfqueue {
2361 my ($options) = @_;
2362
73089769
DM		 2363 if ($options->{ips}) {
2364 my $action = "NFQUEUE";
2365 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2366 if (defined($3) && defined($1)) {
b47ecc88 2367 $action .= " --queue-balance $1:$3";
73089769 2368 } elsif (defined($1)) {
b47ecc88
AD		 2369 $action .= " --queue-num $1";
2370 }
2371 }
8dc92812 2372 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 2373 return $action;
2374 } else {
2375 return "ACCEPT";
b47ecc88 2376 }
b47ecc88
AD		 2377}
2378
da6fc60b 2379sub ruleset_generate_vm_ipsrules {
a01c32c7 2380 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 2381
2382 if ($options->{ips} && $direction eq 'IN') {
2383 my $nfqueue = generate_nfqueue($options);
2384
a01c32c7 2385 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 2386 ruleset_create_chain($ruleset, "PVEFW-IPS");
2387 }
2388
1e9c5070 2389 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue");
da6fc60b
AD		 2390 }
2391}
2392
9e15114a 2393sub generate_tap_rules_direction {
84870b1a 2394 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM		 2395
2396 my $lc_direction = lc($direction);
2397
2398 my $rules = $vmfw_conf->{rules};
2399
2400 my $options = $vmfw_conf->{options};
2401 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
2402
2403 my $tapchain = "$iface-$direction";
2404
b692f42c 2405 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
88c26d5e 2406 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
74601077 2407 if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 2408
a34cfdd0 2409 if ($options->{enable}) {
033a15b3
ML		 2410 # create chain with mac and ip filter
2411 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
2412
3489f8a2 2413 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
3a616aa0 2414
a34cfdd0 2415 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 2416
a34cfdd0
DM		 2417 # implement policy
2418 my $policy;
ccae0b50 2419
a34cfdd0
DM		 2420 if ($direction eq 'OUT') {
2421 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2422 } else {
76448f08 2423 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 2424 }
ccae0b50 2425
a34cfdd0
DM		 2426 my $accept = generate_nfqueue($options);
2427 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2428 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
a34cfdd0
DM		 2429 } else {
2430 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
88c26d5e 2431 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
a34cfdd0 2432 }
3a616aa0 2433
3fa83edf 2434 # plug the tap chain to bridge chain
3cc81077 2435 if ($direction eq 'IN') {
a01c32c7 2436 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
8f3aa9cc 2437 "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain");
3cc81077 2438 } else {
a01c32c7 2439 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
8f3aa9cc 2440 "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain");
3cc81077 2441 }
3a616aa0
AD		 2442}
2443
d18c1e2b 2444sub enable_host_firewall {
06208a01 2445 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf) = @_;
0bd5f137 2446
92e976b3 2447 my $options = $hostfw_conf->{options};
63324b09 2448 my $cluster_options = $cluster_conf->{options};
92e976b3 2449 my $rules = $hostfw_conf->{rules};
35f0c37e 2450 my $cluster_rules = $cluster_conf->{rules};
178a63be 2451
06208a01
SR		 2452 # corosync preparation
2453 my $corosync_rule = "-p udp --dport 5404:5405";
2454 my $corosync_local_addresses = {};
eacd4748 2455 my $multicast_enabled;
06208a01
SR		 2456 my $local_hostname = PVE::INotify::nodename();
2457 if (defined($corosync_conf)) {
2458 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2459 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
2460
2461 if ($node_name eq $local_hostname) {
2462 $corosync_local_addresses->{$key} = $node_ip;
2463 }
2464 });
eacd4748
SR		 2465
2466 # allow multicast only if enabled in config
81a0a9ff
FG		 2467 my $corosync_transport = $corosync_conf->{main}->{totem}->{transport};
2468 $multicast_enabled = defined($corosync_transport) && $corosync_transport eq 'udp';
06208a01
SR		 2469 }
2470
3fa83edf 2471 # host inbound firewall
dec84fcd
DM		 2472 my $chain = "PVEFW-HOST-IN";
2473 ruleset_create_chain($ruleset, $chain);
0bd5f137 2474
178a63be
DM		 2475 my $loglevel = get_option_log_level($options, "log_level_in");
2476
1e9c5070 2477 ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT");
4ac863a6 2478
27c49e25 2479 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e8415920 2480 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
88c26d5e 2481 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
fb424a00 2482
23e888f8
DM		 2483 # we use RETURN because we need to check also tap rules
2484 my $accept_action = 'RETURN';
2485
1e9c5070 2486 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2487
35f0c37e
DM		 2488 # add host rules first, so that cluster wide rules can be overwritten
2489 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2490 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2491 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
bfc488f6 2492
f8b12fff 2493 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 2494
1a9978ed 2495 eval {
4fed896b 2496 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2497 if ($rule->{type} eq 'group') {
aedde2c2 2498 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 2499 } elsif ($rule->{type} eq 'in') {
180da76c 2500 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2501 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2502 }
2503 };
2504 warn $@ if $@;
f8b12fff 2505 delete $rule->{iface_in};
0bd5f137 2506 }
eb399cef
DM		 2507
2508 # allow standard traffic for management ipset (includes cluster network)
88c26d5e 2509 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
708ba714 2510 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
1e9c5070
TW		 2511 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API
2512 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2513 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
2514 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH
94e4ec75 2515 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 60000:60050", "-j $accept_action"); # Migration
bfc488f6 2516
06208a01
SR		 2517 # corosync inbound rules
2518 if (defined($corosync_conf)) {
eacd4748
SR		 2519 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2520 if $multicast_enabled;
3bc79f87 2521
06208a01
SR		 2522 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2523 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2524 my $destination = $corosync_local_addresses->{$key};
06208a01 2525
a9c463ce 2526 if ($node_name ne $local_hostname && defined($destination)) {
06208a01 2527 # accept only traffic on same ring
a9c463ce 2528 ruleset_addrule($ruleset, $chain, "-d $destination -s $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR		 2529 }
2530 });
3bc79f87 2531 }
0bd5f137 2532
23e888f8 2533 # implement input policy
63324b09 2534 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
88c26d5e 2535 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
0bd5f137 2536
3fa83edf 2537 # host outbound firewall
aadd745e 2538 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 2539 ruleset_create_chain($ruleset, $chain);
2540
178a63be
DM		 2541 $loglevel = get_option_log_level($options, "log_level_out");
2542
1e9c5070 2543 ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT");
e2943485 2544
27c49e25 2545 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e2943485 2546
23e888f8
DM		 2547 # we use RETURN because we may want to check other thigs later
2548 $accept_action = 'RETURN';
e8415920 2549 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action");
23e888f8 2550
1e9c5070 2551 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2552
35f0c37e
DM		 2553 # add host rules first, so that cluster wide rules can be overwritten
2554 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2555 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2556 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
5383df39 2557
f8b12fff 2558 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed 2559 eval {
3489f8a2 2560 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2561 if ($rule->{type} eq 'group') {
aedde2c2 2562 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 2563 } elsif ($rule->{type} eq 'out') {
180da76c 2564 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2565 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2566 }
2567 };
2568 warn $@ if $@;
f8b12fff 2569 delete $rule->{iface_out};
0bd5f137
AD		 2570 }
2571
3bc79f87 2572 # allow standard traffic on cluster network
06208a01
SR		 2573 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2574 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
2575
35d1d6da 2576 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW		 2577 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API
2578 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH
2579 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2580 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
06208a01 2581 }
bfc488f6 2582
06208a01
SR		 2583 # corosync outbound rules
2584 if (defined($corosync_conf)) {
eacd4748
SR		 2585 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2586 if $multicast_enabled;
06208a01
SR		 2587
2588 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2589 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2590 my $source = $corosync_local_addresses->{$key};
06208a01 2591
a9c463ce 2592 if ($node_name ne $local_hostname && defined($source)) {
06208a01 2593 # accept only traffic on same ring
a9c463ce 2594 ruleset_addrule($ruleset, $chain, "-s $source -d $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR		 2595 }
2596 });
3bc79f87
DM		 2597 }
2598
23e888f8 2599 # implement output policy
63324b09 2600 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
88c26d5e 2601 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
6158271d 2602
1e9c5070
TW		 2603 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT");
2604 ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN");
9d31b418
AD		 2605}
2606
2607sub generate_group_rules {
aedde2c2 2608 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2609
c6f5cc88 2610 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2611
b4deedab
DM		 2612 if (!$rules) {
2613 warn "no such security group '$group'\n";
2614 $rules = []; # create empty chain
2615 }
2616
3fa83edf 2617 my $chain = "GROUP-${group}-IN";
9d31b418 2618
3fa83edf 2619 ruleset_create_chain($ruleset, $chain);
1e9c5070 2620 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2621
92e976b3
DM		 2622 foreach my $rule (@$rules) {
2623 next if $rule->{type} ne 'in';
7a5a402b 2624 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2625 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
180da76c 2626 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
2dc0a26e 2627 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418
AD		 2628 }
2629
3fa83edf 2630 $chain = "GROUP-${group}-OUT";
9d31b418 2631
3fa83edf 2632 ruleset_create_chain($ruleset, $chain);
1e9c5070 2633 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2634
92e976b3
DM		 2635 foreach my $rule (@$rules) {
2636 next if $rule->{type} ne 'out';
7a5a402b 2637 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2638 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM		 2639 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2640 # check also other tap rules later
180da76c 2641 rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" });
2dc0a26e 2642 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418 2643 }
9d31b418
AD		 2644}
2645
51bae274
DM		 2646my $MAX_NETS = 32;
2647my $valid_netdev_names = {};
2648for (my $i = 0; $i < $MAX_NETS; $i++) {
2649 $valid_netdev_names->{"net$i"} = 1;
2650}
5e1267a5 2651
fe3d79b4
WB		 2652sub get_mark_values {
2653 my ($value, $mask) = @_;
2654 $value = hex($value) if $value =~ /^0x/;
2655 $mask = hex($mask) if defined($mask) && $mask =~ /^0x/;
2656 $mask = 0xffffffff if !defined($mask);
2657 return ($value, $mask);
2658}
2659
51bae274 2660sub parse_fw_rule {
40af93c4 2661 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env) = @_;
5e1267a5 2662
d4cda423
DM		 2663 my $orig_line = $line;
2664
6d9246e7
DM		 2665 my $rule = {};
2666
11bac5c2 2667 # we can add single line comments to the end of the rule
6d9246e7
DM		 2668 if ($line =~ s/#\s*(.*?)\s*$//) {
2669 $rule->{comment} = decode('utf8', $1);
2670 }
11bac5c2
DM		 2671
2672 # we can disable a rule when prefixed with '|'
ea9e5116 2673
6d9246e7 2674 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2675
dba740a9
DM		 2676 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2677 die "unable to parse rule: $line\n";
6d9246e7
DM		 2678
2679 $rule->{type} = lc($1);
2680 $rule->{action} = $2;
2681
2682 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2683 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2684 $rule->{macro} = $1;
2685 $rule->{action} = $2;
92e976b3 2686 }
51bae274
DM		 2687 }
2688
dba740a9
DM		 2689 while (length($line)) {
2690 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2691 $rule->{iface} = $1;
dba740a9
DM		 2692 next;
2693 }
51bae274 2694
6d9246e7 2695 last if $rule->{type} eq 'group';
51bae274 2696
dba740a9 2697 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2698 $rule->{proto} = $1;
dba740a9
DM		 2699 next;
2700 }
6d9246e7 2701
dba740a9 2702 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2703 $rule->{dport} = $1;
dba740a9
DM		 2704 next;
2705 }
6d9246e7 2706
dba740a9 2707 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2708 $rule->{sport} = $1;
dba740a9
DM		 2709 next;
2710 }
2711 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2712 $rule->{source} = $1;
dba740a9
DM		 2713 next;
2714 }
2715 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2716 $rule->{dest} = $1;
dba740a9
DM		 2717 next;
2718 }
3489f8a2
CE		 2719 if ($line =~ s/^-log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) {
2720 $rule->{log} = $1;
2721 next;
2722 }
51bae274 2723
dba740a9
DM		 2724 last;
2725 }
ba791b1f 2726
dba740a9 2727 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2728
a523e057 2729 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
eedcb564
WB		 2730 if ($rule->{errors}) {
2731 # The verbose flag really means we're running from the CLI and want
2732 # output on the console - in the other case we really want such errors
2733 # to go into the syslog instead.
2734 my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) };
2735 $log->("$prefix - errors in rule parameters: $orig_line\n");
d4cda423 2736 foreach my $p (keys %{$rule->{errors}}) {
eedcb564 2737 $log->(" $p: $rule->{errors}->{$p}\n");
d4cda423
DM		 2738 }
2739 }
6d9246e7
DM		 2740
2741 return $rule;
51bae274
DM		 2742}
2743
c5e8b008
AD		 2744sub verify_ethertype {
2745 my ($value) = @_;
2746 my $types = get_etc_ethertypes();
2747 die "unknown ethernet protocol type: $value\n"
2748 if !defined($types->{byname}->{$value}) &&
2749 !defined($types->{byid}->{$value});
2750}
2751
2d404ffc 2752sub parse_vmfw_option {
85c6eaed
DM		 2753 my ($line) = @_;
2754
2755 my ($opt, $value);
2756
178a63be
DM		 2757 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2758
74601077 2759 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2760 $opt = lc($1);
2761 $value = int($2);
178a63be
DM		 2762 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2763 $opt = lc($1);
2764 $value = $2 ? lc($3) : '';
72f63fde 2765 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2766 $opt = lc($1);
2767 $value = uc($3);
b47ecc88
AD		 2768 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2769 $opt = lc($1);
2770 $value = $2;
c5e8b008
AD		 2771 } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) {
2772 $opt = lc($1);
2773 $value = $2;
2774 verify_ethertype($_) foreach split(/\s*,\s*/, $value);
9c6b6efd 2775 } else {
85c6eaed
DM		 2776 die "can't parse option '$line'\n"
2777 }
2778
2779 return ($opt, $value);
2780}
2781
2d404ffc
DM		 2782sub parse_hostfw_option {
2783 my ($line) = @_;
2784
2785 my ($opt, $value);
2786
2787 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2788
ac5dd88e 2789 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2790 $opt = lc($1);
2791 $value = int($2);
178a63be 2792 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2793 $opt = lc($1);
2794 $value = $2 ? lc($3) : '';
ac5dd88e 2795 } elsif ($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		 2796 $opt = lc($1);
2797 $value = int($2);
2d404ffc 2798 } else {
2d404ffc
DM		 2799 die "can't parse option '$line'\n"
2800 }
2801
2802 return ($opt, $value);
2803}
2804
c6f5cc88
DM		 2805sub parse_clusterfw_option {
2806 my ($line) = @_;
2807
2808 my ($opt, $value);
2809
72d055fc 2810 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
c6f5cc88
DM		 2811 $opt = lc($1);
2812 $value = int($2);
72d055fc
AG		 2813 if (($value > 1) && ((time() - $value) > 60)) {
2814 $value = 0
2815 }
2549e7ef 2816 } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) {
84025e99
SI		 2817 $opt = lc($1);
2818 $value = int($2);
63324b09
DM		 2819 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2820 $opt = lc($1);
2821 $value = uc($3);
cc37e000
TL		 2822 } elsif ($line =~ m/^(log_ratelimit):\s*(\S+)\s*$/) {
2823 $opt = lc($1);
2824 $value = $2;
c6f5cc88 2825 } else {
c6f5cc88
DM		 2826 die "can't parse option '$line'\n"
2827 }
2828
2829 return ($opt, $value);
2830}
2831
6c221576
DM		 2832sub resolve_alias {
2833 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2834
6d959e3f 2835 my $alias = lc($cidr);
04f5088f 2836 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
6d959e3f 2837 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2838
6d959e3f
DM		 2839 die "no such alias '$cidr'\n" if !$e;;
2840
2841 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM		 2842}
2843
ae029a88
DM		 2844sub parse_ip_or_cidr {
2845 my ($cidr) = @_;
2846
2847 my $ipversion;
75a12a9d 2848
ae029a88
DM		 2849 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2850 $cidr =~ s|/128$||;
2851 $ipversion = 6;
2852 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2853 $cidr =~ s|/32$||;
2854 $ipversion = 4;
2855 } else {
2856 die "value does not look like a valid IP address or CIDR network\n";
2857 }
2858
2859 return wantarray ? ($cidr, $ipversion) : $cidr;
2860}
2861
e76a9f53 2862sub parse_alias {
92e1209b
AD		 2863 my ($line) = @_;
2864
81d574a7
DM		 2865 # we can add single line comments to the end of the line
2866 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2867
92e1209b 2868 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2869 my ($name, $cidr) = ($1, $2);
ae029a88
DM		 2870 my $ipversion;
2871
2872 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2873
81d574a7
DM		 2874 my $data = {
2875 name => $name,
2876 cidr => $cidr,
70e524eb 2877 ipversion => $ipversion,
81d574a7
DM		 2878 };
2879 $data->{comment} = $comment if $comment;
2880 return $data;
92e1209b
AD		 2881 }
2882
81d574a7 2883 return undef;
92e1209b
AD		 2884}
2885
e5cd1ee0 2886sub generic_fw_config_parser {
585ede43
TL		 2887 my ($filename, $cluster_conf, $empty_conf, $rule_env) = @_;
2888
51bae274
DM		 2889 my $section;
2890 my $group;
2891
1210ae94 2892 my $res = $empty_conf;
6158271d 2893
0dbef530
TL		 2894 my $raw;
2895 if ($filename =~ m!^/etc/pve/(.*)$!) {
2896 $raw = PVE::Cluster::get_config($1);
2897 } else {
2898 $raw = eval { PVE::Tools::file_get_contents($filename) }; # ignore errors
2899 }
2900 return {} if !$raw;
2901
644b5fc9
FG		 2902 my $curr_group_keys = {};
2903
0dbef530
TL		 2904 my $linenr = 0;
2905 while ($raw =~ /^\h*(.*?)\h*$/gm) {
2906 my $line = $1;
2907 $linenr++;
51bae274
DM		 2908 next if $line =~ m/^#/;
2909 next if $line =~ m/^\s*$/;
c8c534f7
DM		 2910 chomp $line;
2911
961b4928
DM		 2912 my $prefix = "$filename (line $linenr)";
2913
1210ae94 2914 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2915 $section = 'options';
2916 next;
2917 }
2918
1210ae94 2919 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2920 $section = 'aliases';
2921 next;
2922 }
2923
1210ae94 2924 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2925 $section = 'groups';
92e976b3 2926 $group = lc($1);
0d22acb3 2927 my $comment = $2;
351052d1
DM		 2928 eval {
2929 die "security group name too long\n" if length($group) > $max_group_name_length;
2930 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2931 };
2932 if (my $err = $@) {
2933 ($section, $group, $comment) = undef;
2934 warn "$prefix: $err";
2935 next;
2936 }
75a12a9d 2937
c85c87f9 2938 $res->{$section}->{$group} = [];
649e4d57
DM		 2939 $res->{group_comments}->{$group} = decode('utf8', $comment)
2940 if $comment;
51bae274
DM		 2941 next;
2942 }
34cdedfa 2943
1210ae94 2944 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2945 $section = 'rules';
2946 next;
2947 }
cbb5d6f3 2948
1210ae94 2949 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2950 $section = 'ipset';
2951 $group = lc($1);
d72c631c 2952 my $comment = $2;
75a12a9d 2953 eval {
351052d1
DM		 2954 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2955 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2956 };
2957 if (my $err = $@) {
2958 ($section, $group, $comment) = undef;
2959 warn "$prefix: $err";
2960 next;
2961 }
2962
c85c87f9 2963 $res->{$section}->{$group} = [];
644b5fc9
FG		 2964 $curr_group_keys = {};
2965
e34d0e58 2966 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2967 if $comment;
34cdedfa
AD		 2968 next;
2969 }
2970
c6f5cc88 2971 if (!$section) {
cbb5d6f3 2972 warn "$prefix: skip line - no section\n";
51bae274
DM		 2973 next;
2974 }
2975
c6f5cc88
DM		 2976 if ($section eq 'options') {
2977 eval {
1210ae94
DM		 2978 my ($opt, $value);
2979 if ($rule_env eq 'cluster') {
2980 ($opt, $value) = parse_clusterfw_option($line);
2981 } elsif ($rule_env eq 'host') {
2982 ($opt, $value) = parse_hostfw_option($line);
2983 } else {
2984 ($opt, $value) = parse_vmfw_option($line);
2985 }
c6f5cc88
DM		 2986 $res->{options}->{$opt} = $value;
2987 };
2988 warn "$prefix: $@" if $@;
92e1209b
AD		 2989 } elsif ($section eq 'aliases') {
2990 eval {
e76a9f53 2991 my $data = parse_alias($line);
81d574a7 2992 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2993 };
2994 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2995 } elsif ($section eq 'rules') {
2996 my $rule;
40af93c4 2997 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env); };
c6f5cc88
DM		 2998 if (my $err = $@) {
2999 warn "$prefix: $err";
3000 next;
3001 }
3002 push @{$res->{$section}}, $rule;
3003 } elsif ($section eq 'groups') {
34cdedfa 3004 my $rule;
40af93c4 3005 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group'); };
34cdedfa
AD		 3006 if (my $err = $@) {
3007 warn "$prefix: $err";
3008 next;
3009 }
3f95d14a 3010 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 3011 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 3012 # we can add single line comments to the end of the rule
3013 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
3014
30f1b100 3015 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 3016 my $nomatch = $1;
9d6f90e6 3017 my $cidr = $2;
d46b1ef6
DM		 3018 my $errors;
3019
3020 if ($nomatch && !$feature_ipset_nomatch) {
3021 $errors->{nomatch} = "nomatch not supported by kernel";
3022 }
2a052ee3 3023
75a12a9d 3024 eval {
4803b296
DM		 3025 if ($cidr =~ m/^${ip_alias_pattern}$/) {
3026 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
3027 } else {
ae029a88 3028 $cidr = parse_ip_or_cidr($cidr);
92e1209b 3029 }
644b5fc9
FG		 3030 die "duplicate ipset entry for '$cidr'\n"
3031 if defined($curr_group_keys->{$cidr});
4803b296
DM		 3032 };
3033 if (my $err = $@) {
c8c534f7 3034 chomp $err;
d46b1ef6 3035 $errors->{cidr} = $err;
2a052ee3 3036 }
2a052ee3 3037
b14db52f
WB		 3038 if ($cidr =~ m!/0+$!) {
3039 $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n";
3040 }
3041
e34d0e58 3042 my $entry = { cidr => $cidr };
9d6f90e6
DM		 3043 $entry->{nomatch} = 1 if $nomatch;
3044 $entry->{comment} = $comment if $comment;
d46b1ef6 3045 $entry->{errors} = $errors if $errors;
e34d0e58 3046
c8c534f7 3047 if ($verbose && $errors) {
9a3061c7 3048 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 3049 foreach my $p (keys %{$errors}) {
3050 warn " $p: $errors->{$p}\n";
3051 }
3052 }
3053
9d6f90e6 3054 push @{$res->{$section}->{$group}}, $entry;
644b5fc9 3055 $curr_group_keys->{$cidr} = 1;
1210ae94
DM		 3056 } else {
3057 warn "$prefix: skip line - unknown section\n";
3058 next;
51bae274 3059 }
5e1267a5
DM		 3060 }
3061
3062 return $res;
3063}
3064
fab41100
FG		 3065# this is only used to prevent concurrent runs of rule compilation/application
3066# see lock_*_conf for cfs locks protectiong config modification
06320eb0
DM		 3067sub run_locked {
3068 my ($code, @param) = @_;
3069
3070 my $timeout = 10;
3071
3072 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
3073
3074 die $@ if $@;
3075
3076 return $res;
3077}
3078
5e1267a5
DM		 3079sub read_local_vm_config {
3080
5e1267a5 3081 my $qemu = {};
3b4882dc 3082 my $lxc = {};
5e1267a5 3083
fdefeeab 3084 my $vmdata = { qemu => $qemu, lxc => $lxc };
5e1267a5 3085
c8301d63
DM		 3086 my $vmlist = PVE::Cluster::get_vmlist();
3087 return $vmdata if !$vmlist || !$vmlist->{ids};
3088 my $ids = $vmlist->{ids};
3089
3090 foreach my $vmid (keys %$ids) {
3091 next if !$vmid; # skip VE0
3092 my $d = $ids->{$vmid};
3093 next if !$d->{node} || $d->{node} ne $nodename;
3094 next if !$d->{type};
fdefeeab 3095 if ($d->{type} eq 'qemu') {
d9fee004 3096 if ($have_qemu_server) {
b5a16dd3 3097 my $cfspath = PVE::QemuConfig->cfs_config_path($vmid);
d9fee004
DM		 3098 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3099 $qemu->{$vmid} = $conf;
3100 }
c8301d63 3101 }
3b4882dc
AG		 3102 } elsif ($d->{type} eq 'lxc') {
3103 if ($have_lxc) {
a7c85d56 3104 my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
3b4882dc
AG		 3105 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3106 $lxc->{$vmid} = $conf;
3107 }
3108 }
3109 }
5e1267a5 3110 }
d9fee004 3111
5e1267a5
DM		 3112 return $vmdata;
3113};
3114
fab41100
FG		 3115sub lock_vmfw_conf {
3116 my ($vmid, $timeout, $code, @param) = @_;
3117
3118 die "can't lock VM firewall config for undefined VMID\n"
3119 if !defined($vmid);
3120
3121 my $res = PVE::Cluster::cfs_lock_firewall("vm-$vmid", $timeout, $code, @param);
3122 die $@ if $@;
3123
3124 return $res;
3125}
3126
e7b35711 3127sub load_vmfw_conf {
40af93c4 3128 my ($cluster_conf, $rule_env, $vmid, $dir) = @_;
e7b35711 3129
21053409 3130 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177 3131 my $filename = "$dir/$vmid.fw";
585ede43
TL		 3132
3133 my $empty_conf = {
3134 rules => [],
3135 options => {},
3136 aliases => {},
3137 ipset => {} ,
3138 ipset_comments => {},
3139 };
3140
3141 my $vmfw_conf = generic_fw_config_parser($filename, $cluster_conf, $empty_conf, $rule_env);
3142 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 3143
3144 return $vmfw_conf;
3145}
3146
464f933e 3147my $format_rules = sub {
dba740a9 3148 my ($rules, $allow_iface) = @_;
464f933e
DM		 3149
3150 my $raw = '';
3151
3152 foreach my $rule (@$rules) {
c14dacdf 3153 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 3154 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
3155 $raw .= uc($rule->{type});
7ca36671
DM		 3156 if ($rule->{macro}) {
3157 $raw .= " $rule->{macro}($rule->{action})";
3158 } else {
3159 $raw .= " " . $rule->{action};
3160 }
dba740a9
DM		 3161 if ($allow_iface && $rule->{iface}) {
3162 $raw .= " -i $rule->{iface}";
3163 }
c14dacdf
DM		 3164
3165 if ($rule->{type} ne 'group') {
dba740a9
DM		 3166 $raw .= " -source $rule->{source}" if $rule->{source};
3167 $raw .= " -dest $rule->{dest}" if $rule->{dest};
3168 $raw .= " -p $rule->{proto}" if $rule->{proto};
3169 $raw .= " -dport $rule->{dport}" if $rule->{dport};
3170 $raw .= " -sport $rule->{sport}" if $rule->{sport};
3489f8a2 3171 $raw .= " -log $rule->{log}" if $rule->{log};
c14dacdf
DM		 3172 }
3173
cbb5d6f3 3174 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 3175 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
3176 $raw .= "\n";
3177 } else {
c14dacdf 3178 die "unknown rule type '$rule->{type}'";
464f933e
DM		 3179 }
3180 }
3181
3182 return $raw;
3183};
3184
3185my $format_options = sub {
68c90e21
DM		 3186 my ($options) = @_;
3187
3188 my $raw = '';
464f933e
DM		 3189
3190 $raw .= "[OPTIONS]\n\n";
3191 foreach my $opt (keys %$options) {
3192 $raw .= "$opt: $options->{$opt}\n";
3193 }
3194 $raw .= "\n";
68c90e21
DM		 3195
3196 return $raw;
464f933e
DM		 3197};
3198
0d5f0a0f
DM		 3199my $format_aliases = sub {
3200 my ($aliases) = @_;
3201
3202 my $raw = '';
3203
3204 $raw .= "[ALIASES]\n\n";
3205 foreach my $k (keys %$aliases) {
81d574a7
DM		 3206 my $e = $aliases->{$k};
3207 $raw .= "$e->{name} $e->{cidr}";
3208 $raw .= " # " . encode('utf8', $e->{comment})
3209 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
3210 $raw .= "\n";
0d5f0a0f
DM		 3211 }
3212 $raw .= "\n";
3213
3214 return $raw;
3215};
3216
1210ae94
DM		 3217my $format_ipsets = sub {
3218 my ($fw_conf) = @_;
75a12a9d 3219
9d6f90e6
DM		 3220 my $raw = '';
3221
1210ae94
DM		 3222 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
3223 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
3224 my $utf8comment = encode('utf8', $comment);
3225 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
3226 } else {
3227 $raw .= "[IPSET $ipset]\n\n";
3228 }
3229 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 3230
1210ae94
DM		 3231 my $nethash = {};
3232 foreach my $entry (@$options) {
644b5fc9
FG		 3233 my $cidr = $entry->{cidr};
3234 if (defined($nethash->{$cidr})) {
3235 warn "ignoring duplicate ipset entry '$cidr'\n";
3236 next;
3237 }
3238
3239 $nethash->{$cidr} = $entry;
1210ae94
DM		 3240 }
3241
3242 foreach my $cidr (sort keys %$nethash) {
3243 my $entry = $nethash->{$cidr};
3244 my $line = $entry->{nomatch} ? '!' : '';
3245 $line .= $entry->{cidr};
3246 $line .= " # " . encode('utf8', $entry->{comment})
3247 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
3248 $raw .= "$line\n";
3249 }
3250
3251 $raw .= "\n";
9d6f90e6 3252 }
e34d0e58 3253
9d6f90e6
DM		 3254 return $raw;
3255};
3256
464f933e
DM		 3257sub save_vmfw_conf {
3258 my ($vmid, $vmfw_conf) = @_;
3259
3260 my $raw = '';
3261
3262 my $options = $vmfw_conf->{options};
89ea63c8 3263 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3264
e76a9f53 3265 my $aliases = $vmfw_conf->{aliases};
89ea63c8 3266 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 3267
89ea63c8 3268 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 3269
8824b2f0 3270 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 3271 if ($rules && scalar(@$rules)) {
464f933e
DM		 3272 $raw .= "[RULES]\n\n";
3273 $raw .= &$format_rules($rules, 1);
3274 $raw .= "\n";
3275 }
3276
21053409 3277 my $filename = "$pvefw_conf_dir/$vmid.fw";
c32e04e6
FG		 3278 if ($raw) {
3279 mkdir $pvefw_conf_dir;
3280 PVE::Tools::file_set_contents($filename, $raw);
3281 } else {
3282 unlink $filename;
3283 }
464f933e
DM		 3284}
3285
edee9035
AG		 3286sub remove_vmfw_conf {
3287 my ($vmid) = @_;
3288
3289 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
3290
3291 unlink $vmfw_conffile;
3292}
3293
5471ff7c
AG		 3294sub clone_vmfw_conf {
3295 my ($vmid, $newid) = @_;
3296
3297 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
3298 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
3299
9388a8f4
FG		 3300 lock_vmfw_conf($newid, 10, sub {
3301 if (-f $clonevm_conffile) {
3302 unlink $clonevm_conffile;
3303 }
3304 if (-f $sourcevm_conffile) {
3305 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
3306 PVE::Tools::file_set_contents($clonevm_conffile, $data);
3307 }
3308 });
5471ff7c
AG		 3309}
3310
6fc63ffd 3311sub read_vm_firewall_configs {
40af93c4 3312 my ($cluster_conf, $vmdata, $dir) = @_;
8aef5177 3313
6fc63ffd 3314 my $vmfw_configs = {};
c8301d63 3315
b6b8e6ad 3316 foreach my $vmid (keys %{$vmdata->{qemu}}) {
40af93c4 3317 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir);
75a12a9d 3318 next if !$vmfw_conf->{options}; # skip if file does not exist
b6b8e6ad
DM		 3319 $vmfw_configs->{$vmid} = $vmfw_conf;
3320 }
3b4882dc 3321 foreach my $vmid (keys %{$vmdata->{lxc}}) {
40af93c4 3322 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir);
75a12a9d 3323 next if !$vmfw_conf->{options}; # skip if file does not exist
3b4882dc
AG		 3324 $vmfw_configs->{$vmid} = $vmfw_conf;
3325 }
5e1267a5 3326
6fc63ffd 3327 return $vmfw_configs;
5e1267a5
DM		 3328}
3329
2d404ffc
DM		 3330sub get_option_log_level {
3331 my ($options, $k) = @_;
3332
3333 my $v = $options->{$k};
178a63be 3334 $v = $default_log_level if !defined($v);
2d404ffc
DM		 3335
3336 return undef if $v eq '' || $v eq 'nolog';
3337
3489f8a2 3338 return $v if defined($log_level_hash->{$v});
2d404ffc
DM		 3339
3340 warn "unknown log level ($k = '$v')\n";
3341
3342 return undef;
3343}
3344
d8f2505e 3345sub generate_std_chains {
db8a955f
DM		 3346 my ($ruleset, $options, $ipversion) = @_;
3347
3348 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
cbb5d6f3 3349
2d404ffc 3350 my $loglevel = get_option_log_level($options, 'smurf_log_level');
044409e5
TW		 3351 my $chain = 'PVEFW-smurflog';
3352 if ( $std_chains->{$chain} ) {
3353 foreach my $r (@{$std_chains->{$chain}}) {
3354 $r->{log} = $loglevel;
3355 }
db8a955f 3356 }
2d404ffc
DM		 3357
3358 # same as shorewall logflags action.
3359 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 3360 $chain = 'PVEFW-logflags';
044409e5
TW		 3361 if ( $std_chains->{$chain} ) {
3362 foreach my $r (@{$std_chains->{$chain}}) {
3363 $r->{log} = $loglevel;
3364 }
3365 }
d8f2505e 3366
db8a955f 3367 foreach my $chain (keys %$std_chains) {
d8f2505e 3368 ruleset_create_chain($ruleset, $chain);
db8a955f 3369 foreach my $rule (@{$std_chains->{$chain}}) {
d8f2505e 3370 if (ref($rule)) {
3489f8a2 3371 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0);
d8f2505e 3372 } else {
044409e5 3373 die "rule $rule as string - should not happen";
d8f2505e
DM		 3374 }
3375 }
3376 }
3377}
3378
34cdedfa 3379sub generate_ipset_chains {
74601077 3380 my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_;
34cdedfa 3381
74601077 3382 foreach my $ipset (keys %{$ipsets}) {
34cdedfa 3383
74601077 3384 my $options = $ipsets->{$ipset};
34cdedfa 3385
ebf72e49
WB		 3386 if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) {
3387 if (my $ips = $device_ips->{$1}) {
3388 $options = [@$options, @$ips];
3389 }
3390 }
3391
88c26d5e
DM		 3392 # remove duplicates
3393 my $nethash = {};
3394 foreach my $entry (@$options) {
3395 next if $entry->{errors}; # skip entries with errors
3396 eval {
3397 my ($cidr, $ver);
3398 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
3399 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
3400 } else {
3401 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
3402 }
3403 #http://backreference.org/2013/03/01/ipv6-address-normalization/
3404 if ($ver == 6) {
e0a9139f
WB		 3405 # ip_compress_address takes an address only, no CIDR
3406 my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@);
3407 $cidr = lc(Net::IP::ip_compress_address($addr, 6));
3408 $cidr .= $prefix_len if defined($prefix_len);
88c26d5e
DM		 3409 $cidr =~ s|/128$||;
3410 } else {
3411 $cidr =~ s|/32$||;
3412 }
34cdedfa 3413
88c26d5e
DM		 3414 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
3415 };
3416 warn $@ if $@;
3417 }
6d959e3f 3418
88c26d5e
DM		 3419 foreach my $ipversion (4, 6) {
3420 my $data = $nethash->{$ipversion};
30f1b100 3421
88c26d5e 3422 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
6d959e3f 3423
88c26d5e
DM		 3424 my $hashsize = scalar(@$options);
3425 if ($hashsize <= 64) {
3426 $hashsize = 64;
3427 } else {
3428 $hashsize = round_powerof2($hashsize);
3429 }
6d959e3f 3430
88c26d5e 3431 my $family = $ipversion == "6" ? "inet6" : "inet";
30f1b100 3432
88c26d5e 3433 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
6d959e3f 3434
88c26d5e
DM		 3435 foreach my $cidr (sort keys %$data) {
3436 my $entry = $data->{$cidr};
6d959e3f 3437
88c26d5e
DM		 3438 my $cmd = "add $name $cidr";
3439 if ($entry->{nomatch}) {
3440 if ($feature_ipset_nomatch) {
3441 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3442 } else {
3443 warn "ignore !$cidr - nomatch not supported by kernel\n";
3444 }
6d959e3f 3445 } else {
88c26d5e 3446 push @{$ipset_ruleset->{$name}}, $cmd;
6d959e3f 3447 }
9d6f90e6 3448 }
9d6f90e6 3449 }
34cdedfa 3450 }
2a052ee3
AD		 3451}
3452
3453sub round_powerof2 {
dd7a13fd 3454 my ($int) = @_;
2a052ee3 3455
dd7a13fd
DM		 3456 $int--;
3457 $int |= $int >> $_ foreach (1,2,4,8,16);
3458 return ++$int;
34cdedfa
AD		 3459}
3460
cc37e000
TL		 3461my $set_global_log_ratelimit = sub {
3462 my $cluster_opts = shift;
3463
3464 $global_log_ratelimit = '--limit 1/sec';
3465 if (defined(my $log_rlimit = $cluster_opts->{log_ratelimit})) {
3466 my $ll_format = $cluster_option_properties->{log_ratelimit}->{format};
3467 my $limit = PVE::JSONSchema::parse_property_string($ll_format, $log_rlimit);
3468
3469 if ($limit->{enable}) {
3470 if (my $rate = $limit->{rate}) {
3471 $global_log_ratelimit = "--limit $rate";
3472 }
3473 if (my $burst = $limit->{burst}) {
3474 $global_log_ratelimit .= " --limit-burst $burst";
3475 }
3476 } else {
3477 $global_log_ratelimit = undef;
3478 }
3479 }
3480};
3481
fab41100
FG		 3482sub lock_clusterfw_conf {
3483 my ($timeout, $code, @param) = @_;
3484
3485 my $res = PVE::Cluster::cfs_lock_firewall("cluster", $timeout, $code, @param);
3486 die $@ if $@;
3487
3488 return $res;
3489}
3490
fca39c2c 3491sub load_clusterfw_conf {
40af93c4 3492 my ($filename) = @_;
8aef5177
DM		 3493
3494 $filename = $clusterfw_conf_filename if !defined($filename);
585ede43
TL		 3495 my $empty_conf = {
3496 rules => [],
3497 options => {},
3498 aliases => {},
3499 groups => {},
3500 group_comments => {},
3501 ipset => {} ,
3502 ipset_comments => {},
3503 };
530c005e 3504
585ede43
TL		 3505 my $cluster_conf = generic_fw_config_parser($filename, $empty_conf, $empty_conf, 'cluster');
3506 $set_global_log_ratelimit->($cluster_conf->{options});
5e1267a5 3507
fca39c2c 3508 return $cluster_conf;
e5d76bde
DM		 3509}
3510
fca39c2c
DM		 3511sub save_clusterfw_conf {
3512 my ($cluster_conf) = @_;
9c7e0858
DM		 3513
3514 my $raw = '';
9c7e0858 3515
c6f5cc88 3516 my $options = $cluster_conf->{options};
89ea63c8 3517 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 3518
0d5f0a0f 3519 my $aliases = $cluster_conf->{aliases};
89ea63c8 3520 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 3521
89ea63c8 3522 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
75a12a9d 3523
c6f5cc88 3524 my $rules = $cluster_conf->{rules};
89ea63c8 3525 if ($rules && scalar(@$rules)) {
c6f5cc88 3526 $raw .= "[RULES]\n\n";
63c91681 3527 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 3528 $raw .= "\n";
3529 }
3530
89ea63c8
DM		 3531 if ($cluster_conf->{groups}) {
3532 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3533 my $rules = $cluster_conf->{groups}->{$group};
3534 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3535 my $utf8comment = encode('utf8', $comment);
3536 $raw .= "[group $group] # $utf8comment\n\n";
3537 } else {
3538 $raw .= "[group $group]\n\n";
3539 }
0d22acb3 3540
89ea63c8
DM		 3541 $raw .= &$format_rules($rules, 0);
3542 $raw .= "\n";
3543 }
9c7e0858
DM		 3544 }
3545
c32e04e6
FG		 3546 if ($raw) {
3547 mkdir $pvefw_conf_dir;
3548 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3549 } else {
3550 unlink $clusterfw_conf_filename;
3551 }
9c7e0858
DM		 3552}
3553
fab41100
FG		 3554sub lock_hostfw_conf {
3555 my ($timeout, $code, @param) = @_;
3556
3557 my $res = PVE::Cluster::cfs_lock_firewall("host-$nodename", $timeout, $code, @param);
3558 die $@ if $@;
3559
3560 return $res;
3561}
3562
8b27beb9 3563sub load_hostfw_conf {
40af93c4 3564 my ($cluster_conf, $filename) = @_;
8aef5177
DM		 3565
3566 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9 3567
585ede43
TL		 3568 my $empty_conf = { rules => [], options => {}};
3569 return generic_fw_config_parser($filename, $cluster_conf, $empty_conf, 'host');
8b27beb9
DM		 3570}
3571
63c91681
DM		 3572sub save_hostfw_conf {
3573 my ($hostfw_conf) = @_;
3574
3575 my $raw = '';
3576
3577 my $options = $hostfw_conf->{options};
89ea63c8 3578 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3579
63c91681 3580 my $rules = $hostfw_conf->{rules};
89ea63c8 3581 if ($rules && scalar(@$rules)) {
63c91681
DM		 3582 $raw .= "[RULES]\n\n";
3583 $raw .= &$format_rules($rules, 1);
3584 $raw .= "\n";
3585 }
3586
c32e04e6
FG		 3587 if ($raw) {
3588 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3589 } else {
3590 unlink $hostfw_conf_filename;
3591 }
63c91681
DM		 3592}
3593
e5d76bde 3594sub compile {
06208a01 3595 my ($cluster_conf, $hostfw_conf, $vmdata, $corosync_conf) = @_;
3dfa8a7f 3596
8aef5177
DM		 3597 my $vmfw_configs;
3598
cfd7cd9c
TW		 3599 # fixme: once we read standard chains from config this needs to be put in test/standard cases below
3600 $pve_std_chains = dclone($pve_std_chains_conf);
3601
8aef5177
DM		 3602 if ($vmdata) { # test mode
3603 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3604 my $filename = "$testdir/cluster.fw";
40af93c4 3605 $cluster_conf = load_clusterfw_conf($filename);
8aef5177
DM		 3606
3607 $filename = "$testdir/host.fw";
40af93c4 3608 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename);
8aef5177 3609
40af93c4 3610 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir);
8aef5177 3611 } else { # normal operation
40af93c4 3612 $cluster_conf = load_clusterfw_conf(undef) if !$cluster_conf;
8aef5177 3613
40af93c4 3614 $hostfw_conf = load_hostfw_conf($cluster_conf, undef) if !$hostfw_conf;
8aef5177 3615
06208a01 3616 # cfs_update is handled by daemon or API
328d1e87
SR		 3617 $corosync_conf = PVE::Cluster::cfs_read_file("corosync.conf")
3618 if !defined($corosync_conf) && PVE::Corosync::check_conf_exists(1);
06208a01 3619
8aef5177 3620 $vmdata = read_local_vm_config();
40af93c4 3621 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef);
8aef5177 3622 }
3dfa8a7f 3623
84025e99 3624 return ({},{},{},{}) if !$cluster_conf->{options}->{enable};
9268573a 3625
525778d7
DM		 3626 my $localnet;
3627 if ($cluster_conf->{aliases}->{local_network}) {
3628 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3629 } else {
afcd29b3
DM		 3630 my $localnet_ver;
3631 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3632
84025e99 3633 $cluster_conf->{aliases}->{local_network} = {
afcd29b3 3634 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
525778d7
DM		 3635 }
3636
3637 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 3638
64e0adf4
AD		 3639 my $ruleset = {};
3640 my $rulesetv6 = {};
3641 $ruleset->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
3642 $ruleset->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
3643 $rulesetv6->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
3644 $rulesetv6->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
40af93c4 3645 my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata);
147dd882
WB		 3646 my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata);
3647
c5e8b008 3648 return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
147dd882
WB		 3649}
3650
64e0adf4
AD		 3651sub compile_iptables_raw {
3652 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
3653
3654 my $ruleset = {};
3655
ac5dd88e
AD		 3656 my $hostfw_options = $hostfw_conf->{options} || {};
3657 my $protection_synflood = $hostfw_options->{protection_synflood} || 0;
3658
3659 if($protection_synflood) {
3660
3661 my $protection_synflood_rate = $hostfw_options->{protection_synflood_rate} ? $hostfw_options->{protection_synflood_rate} : 200;
3662 my $protection_synflood_burst = $hostfw_options->{protection_synflood_burst} ? $hostfw_options->{protection_synflood_burst} : 1000;
3663 my $protection_synflood_limit = $hostfw_options->{protection_synflood_limit} ? $hostfw_options->{protection_synflood_limit} : 3000;
3664 my $protection_synflood_expire = $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} ? $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} : 60;
3665 $protection_synflood_expire = $protection_synflood_expire * 1000;
3666 my $protection_synflood_mask = $ipversion == 4 ? 32 : 64;
3667
3668 ruleset_create_chain($ruleset, "PVEFW-PREROUTING");
3669 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");
3670 }
3671
64e0adf4
AD		 3672 return $ruleset;
3673}
3674
147dd882 3675sub compile_iptables_filter {
06208a01 3676 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
085fd492 3677
3fa83edf
DM		 3678 my $ruleset = {};
3679
dec84fcd
DM		 3680 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3681 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 3682
fadb13dd 3683 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 3684
8b27beb9 3685 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 3686
88733a74
AD		 3687 # fixme: what log level should we use here?
3688 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3689
b409c8a8
TL		 3690 my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0;
3691 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT");
88733a74 3692
e2943485 3693 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
88c26d5e 3694 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
e2943485 3695
1e9c5070 3696 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN");
e2943485
DM		 3697
3698 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
1e9c5070 3699 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT");
e2943485 3700
db8a955f 3701 generate_std_chains($ruleset, $hostfw_options, $ipversion);
fadb13dd 3702
6d2ab017 3703 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 3704
35d1d6da 3705 if ($hostfw_enable) {
06208a01 3706 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf); };
1a9978ed
DM		 3707 warn $@ if $@; # just to be sure - should not happen
3708 }
3fa83edf 3709
6158271d 3710 # generate firewall rules for QEMU VMs
0a0ba19e 3711 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 3712 eval {
3713 my $conf = $vmdata->{qemu}->{$vmid};
3714 my $vmfw_conf = $vmfw_configs->{$vmid};
bd60a824 3715 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
1a9978ed 3716
0a0ba19e 3717 foreach my $netid (sort keys %$conf) {
1a9978ed
DM		 3718 next if $netid !~ m/^net(\d+)$/;
3719 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3720 next if !$net->{firewall};
1a9978ed 3721
ad722fb4 3722 my $iface = "tap${vmid}i$1";
1a9978ed
DM		 3723 my $macaddr = $net->{macaddr};
3724 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
ad722fb4 3725 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3726 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
ad722fb4 3727 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed
DM		 3728 }
3729 };
3730 warn $@ if $@; # just to be sure - should not happen
3fa83edf 3731 }
c8301d63 3732
3b4882dc 3733 # generate firewall rules for LXC containers
0a0ba19e 3734 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
ad722fb4
FG		 3735 eval {
3736 my $conf = $vmdata->{lxc}->{$vmid};
3737 my $vmfw_conf = $vmfw_configs->{$vmid};
3738 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
3739
3740 foreach my $netid (sort keys %$conf) {
3741 next if $netid !~ m/^net(\d+)$/;
3742 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3743 next if !$net->{firewall};
3744
3745 my $iface = "veth${vmid}i$1";
3746 my $macaddr = $net->{hwaddr};
3747 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3748 $vmfw_conf, $vmid, 'IN', $ipversion);
3749 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3750 $vmfw_conf, $vmid, 'OUT', $ipversion);
3751 }
3752 };
3753 warn $@ if $@; # just to be sure - should not happen
3b4882dc
AG		 3754 }
3755
ad722fb4 3756 if (ruleset_chain_exist($ruleset, "PVEFW-IPS")){
1e9c5070 3757 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS");
097820b0
AD		 3758 }
3759
147dd882
WB		 3760 return $ruleset;
3761}
3762
ebf72e49
WB		 3763sub mac_to_linklocal {
3764 my ($macaddr) = @_;
3765 my @parts = split(/:/, $macaddr);
3766 # The standard link local address uses the fe80::/64 prefix with the
3767 # modified EUI-64 identifier derived from the MAC address by flipping the
3768 # universal/local bit and inserting FF:FE in the middle.
3769 # See RFC 4291.
3770 $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02);
3771 my @meui64 = (@parts[0,1,2], 'ff', 'fe', @parts[3,4,5]);
3772 return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]";
3773}
3774
147dd882
WB		 3775sub compile_ipsets {
3776 my ($cluster_conf, $vmfw_configs, $vmdata) = @_;
3777
3778 my $localnet;
3779 if ($cluster_conf->{aliases}->{local_network}) {
3780 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3781 } else {
3782 my $localnet_ver;
3783 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3784
75a12a9d 3785 $cluster_conf->{aliases}->{local_network} = {
147dd882
WB		 3786 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
3787 }
3788
3789 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3790
3791
3792 my $ipset_ruleset = {};
3793
3794 # generate ipsets for QEMU VMs
3795 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3796 eval {
3797 my $conf = $vmdata->{qemu}->{$vmid};
3798 my $vmfw_conf = $vmfw_configs->{$vmid};
3799 return if !$vmfw_conf;
3800
74601077
WB		 3801 # When the 'ipfilter' option is enabled every device for which there
3802 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3803 # ipset.
3804 # The reason is that ipfilter ipsets are always filled with standard
3805 # IPv6 link-local filters.
3806 my $ipsets = $vmfw_conf->{ipset};
3807 my $implicit_sets = {};
3808
ebf72e49
WB		 3809 my $device_ips = {};
3810 foreach my $netid (keys %$conf) {
3811 next if $netid !~ m/^net(\d+)$/;
3812 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3813 next if !$net->{firewall};
3814
74601077
WB		 3815 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3816 $implicit_sets->{"ipfilter-$netid"} = [];
3817 }
3818
ebf72e49
WB		 3819 my $macaddr = $net->{macaddr};
3820 my $linklocal = mac_to_linklocal($macaddr);
3821 $device_ips->{$netid} = [
3822 { cidr => $linklocal },
3823 { cidr => 'fe80::/10', nomatch => 1 }
3824 ];
3825 }
3826
74601077
WB		 3827 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3828 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
147dd882
WB		 3829 };
3830 warn $@ if $@; # just to be sure - should not happen
3831 }
3832
3833 # generate firewall rules for LXC containers
3834 foreach my $vmid (keys %{$vmdata->{lxc}}) {
aa229652
WB		 3835 eval {
3836 my $conf = $vmdata->{lxc}->{$vmid};
3837 my $vmfw_conf = $vmfw_configs->{$vmid};
3838 return if !$vmfw_conf;
147dd882 3839
74601077
WB		 3840 # When the 'ipfilter' option is enabled every device for which there
3841 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3842 # ipset.
3843 # The reason is that ipfilter ipsets are always filled with standard
383fe679
WB		 3844 # IPv6 link-local filters, as well as the IP addresses configured
3845 # for the container.
74601077
WB		 3846 my $ipsets = $vmfw_conf->{ipset};
3847 my $implicit_sets = {};
3848
ebf72e49
WB		 3849 my $device_ips = {};
3850 foreach my $netid (keys %$conf) {
3851 next if $netid !~ m/^net(\d+)$/;
a7c85d56 3852 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
ebf72e49
WB		 3853 next if !$net->{firewall};
3854
74601077
WB		 3855 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3856 $implicit_sets->{"ipfilter-$netid"} = [];
3857 }
3858
ebf72e49
WB		 3859 my $macaddr = $net->{hwaddr};
3860 my $linklocal = mac_to_linklocal($macaddr);
383fe679 3861 my $set = $device_ips->{$netid} = [
ebf72e49
WB		 3862 { cidr => $linklocal },
3863 { cidr => 'fe80::/10', nomatch => 1 }
3864 ];
37ef1ce1 3865 if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) {
383fe679
WB		 3866 push @$set, { cidr => $1 };
3867 }
37ef1ce1 3868 if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) {
383fe679
WB		 3869 push @$set, { cidr => $1 };
3870 }
ebf72e49
WB		 3871 }
3872
74601077
WB		 3873 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3874 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
aa229652
WB		 3875 };
3876 warn $@ if $@; # just to be sure - should not happen
147dd882
WB		 3877 }
3878
74601077 3879 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset});
27083984 3880
147dd882 3881 return $ipset_ruleset;
3fa83edf
DM		 3882}
3883
c5e8b008 3884sub compile_ebtables_filter {
40af93c4 3885 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata) = @_;
c5e8b008 3886
2549e7ef 3887 if (!($cluster_conf->{options}->{ebtables} // 1)) {
84025e99
SI		 3888 return {};
3889 }
c5e8b008
AD		 3890
3891 my $ruleset = {};
3892
3893 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3894
c5e8b008
AD		 3895 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3896 #for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED', to speedup rules
3897 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv4', '-j ACCEPT');
3898 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv6', '-j ACCEPT');
3899 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-o fwln+', '-j PVEFW-FWBR-OUT');
3900
3901 # generate firewall rules for QEMU VMs
2e30c5c7 3902 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
c5e8b008
AD		 3903 eval {
3904 my $conf = $vmdata->{qemu}->{$vmid};
3905 my $vmfw_conf = $vmfw_configs->{$vmid};
3906 return if !$vmfw_conf;
401c141b 3907 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3908
4a1072dd 3909 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3910 next if $netid !~ m/^net(\d+)$/;
3911 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3912 next if !$net->{firewall};
3913 my $iface = "tap${vmid}i$1";
3914 my $macaddr = $net->{macaddr};
401c141b
AD		 3915 my $arpfilter = [];
3916 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3917 foreach my $ipaddr (@$ipset) {
3918 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3919 next if !$ip || ($version && $version != 4);
3920 push(@$arpfilter, $ip);
3921 }
3922 }
3923 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3924 }
3925 };
3926 warn $@ if $@; # just to be sure - should not happen
3927 }
3928
3929 # generate firewall rules for LXC containers
2e30c5c7 3930 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
c5e8b008
AD		 3931 eval {
3932 my $conf = $vmdata->{lxc}->{$vmid};
3933
3934 my $vmfw_conf = $vmfw_configs->{$vmid};
3935 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
401c141b 3936 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3937
4a1072dd 3938 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3939 next if $netid !~ m/^net(\d+)$/;
3940 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3941 next if !$net->{firewall};
3942 my $iface = "veth${vmid}i$1";
3943 my $macaddr = $net->{hwaddr};
401c141b
AD		 3944 my $arpfilter = [];
3945 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3946 foreach my $ipaddr (@$ipset) {
3947 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3948 next if !$ip || ($version && $version != 4);
3949 push(@$arpfilter, $ip);
3950 }
3951 }
03984808 3952 if (defined(my $ip = $net->{ip}) && $vmfw_conf->{options}->{ipfilter}) {
a9068b2d
TL		 3953 # ebtables changes this to a .0/MASK network but we just
3954 # want the address here, no network - see #2193
255698f6 3955 $ip =~ s|/(\d+)$||;
c5a10084
ML		 3956 if ($ip ne 'dhcp') {
3957 push @$arpfilter, $ip;
3958 }
556ae5c1 3959 }
401c141b 3960 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3961 }
3962 };
3963 warn $@ if $@; # just to be sure - should not happen
3964 }
3965
3966 return $ruleset;
3967}
3968
3969sub generate_tap_layer2filter {
401c141b 3970 my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_;
c5e8b008
AD		 3971 my $options = $vmfw_conf->{options};
3972
3973 my $tapchain = $iface."-OUT";
3974
3975 # ebtables remove zeros from mac pairs
3976 $macaddr =~ s/0([0-9a-f])/$1/ig;
3977 $macaddr = lc($macaddr);
3978
3979 ruleset_create_chain($ruleset, $tapchain);
3980
3981 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
3982 ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP');
3983 }
3984
401c141b
AD		 3985 if (@$arpfilter){
3986 my $arpchain = $tapchain."-ARP";
3987 ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain");
3988 ruleset_create_chain($ruleset, $arpchain);
3989
3990 foreach my $ip (@{$arpfilter}) {
3991 ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN');
3992 }
3993 ruleset_addrule($ruleset, $arpchain, '', '-j DROP');
3994 }
3995
c5e8b008 3996 if (defined($options->{layer2_protocols})){
33efd363
AD		 3997 my $protochain = $tapchain."-PROTO";
3998 ruleset_addrule($ruleset, $tapchain, '', "-j $protochain");
3999 ruleset_create_chain($ruleset, $protochain);
4000
c5e8b008 4001 foreach my $proto (split(/,/, $options->{layer2_protocols})) {
33efd363 4002 ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN');
c5e8b008 4003 }
33efd363 4004 ruleset_addrule($ruleset, $protochain, '', '-j DROP');
c5e8b008
AD		 4005 }
4006
33efd363
AD		 4007 ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT');
4008
c5e8b008
AD		 4009 ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT', "-i $iface", "-j $tapchain");
4010}
4011
84025e99
SI		 4012# the parameter $change_only_regex changes two things if defined:
4013# * all chains not matching it will be left intact
4014# * both the $active_chains hash and the returned status_hash have different
4015# structure (they contain a key named 'rules').
3fa83edf 4016sub get_ruleset_status {
40af93c4 4017 my ($ruleset, $active_chains, $digest_fn, $change_only_regex) = @_;
3fa83edf
DM		 4018
4019 my $statushash = {};
4020
4021 foreach my $chain (sort keys %$ruleset) {
84025e99
SI		 4022 my $rules = $ruleset->{$chain};
4023 my $sig = &$digest_fn($rules);
4024 my $oldsig;
9bf7d929 4025
3fa83edf 4026 $statushash->{$chain}->{sig} = $sig;
84025e99
SI		 4027 if (defined($change_only_regex)) {
4028 $oldsig = $active_chains->{$chain}->{sig};
4029 $statushash->{$chain}->{rules} = $rules;
4030 } else {
4031 $oldsig = $active_chains->{$chain};
4032 }
3fa83edf
DM		 4033 if (!defined($oldsig)) {
4034 $statushash->{$chain}->{action} = 'create';
4035 } else {
4036 if ($oldsig eq $sig) {
4037 $statushash->{$chain}->{action} = 'exists';
4038 } else {
4039 $statushash->{$chain}->{action} = 'update';
4040 }
4041 }
84025e99
SI		 4042 if ($verbose) {
4043 print "$statushash->{$chain}->{action} $chain ($sig)\n";
4044 foreach my $cmd (@{$rules}) {
4045 print "\t$cmd\n";
4046 }
3fa83edf
DM		 4047 }
4048 }
4049
4050 foreach my $chain (sort keys %$active_chains) {
84025e99
SI		 4051 next if defined($ruleset->{$chain});
4052 my $action = 'delete';
d9551052 4053 my $sig = $active_chains->{$chain};
84025e99
SI		 4054 if (defined($change_only_regex)) {
4055 $action = 'ignore' if ($chain !~ m/$change_only_regex/);
4056 $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules};
d9551052 4057 $sig = $sig->{sig};
84025e99 4058 }
84025e99
SI		 4059 $statushash->{$chain}->{action} = $action;
4060 $statushash->{$chain}->{sig} = $sig;
4061 print "$action $chain ($sig)\n" if $verbose;
6158271d 4062 }
2a052ee3 4063
3fa83edf
DM		 4064 return $statushash;
4065}
4066
3fa83edf
DM		 4067sub print_sig_rule {
4068 my ($chain, $sig) = @_;
4069
09d5f68e
DM		 4070 # We just use this to store a SHA1 checksum used to detect changes
4071 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 4072}
4073
df7cb349 4074sub get_ruleset_cmdlist {
64e0adf4 4075 my ($ruleset, $iptablescmd, $table) = @_;
3fa83edf 4076
64e0adf4 4077 $table = 'filter' if !$table;
cbb5d6f3 4078
64e0adf4
AD		 4079 my $cmdlist = "*$table\n"; # we pass this to iptables-restore;
4080
4081 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd, $table);
40af93c4 4082 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest);
3fa83edf
DM		 4083
4084 # create missing chains first
4085 foreach my $chain (sort keys %$ruleset) {
4086 my $stat = $statushash->{$chain};
4087 die "internal error" if !$stat;
4088 next if $stat->{action} ne 'create';
886aba9c 4089
3fa83edf
DM		 4090 $cmdlist .= ":$chain - [0:0]\n";
4091 }
4092
64e0adf4 4093 foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
55fad3b7
DM		 4094 my $chain = "PVEFW-$h";
4095 if ($ruleset->{$chain} && !$hooks->{$h}) {
4096 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 4097 }
3fa83edf
DM		 4098 }
4099
4100 foreach my $chain (sort keys %$ruleset) {
4101 my $stat = $statushash->{$chain};
4102 die "internal error" if !$stat;
4103
4104 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
4105 $cmdlist .= "-F $chain\n";
4106 foreach my $cmd (@{$ruleset->{$chain}}) {
4107 $cmdlist .= "$cmd\n";
4108 }
4109 $cmdlist .= print_sig_rule($chain, $stat->{sig});
4110 } elsif ($stat->{action} eq 'delete') {
f5d28682 4111 die "internal error"; # this should not happen
3fa83edf
DM		 4112 } elsif ($stat->{action} eq 'exists') {
4113 # do nothing
4114 } else {
4115 die "internal error - unknown status '$stat->{action}'";
4116 }
4117 }
4118
f5d28682
DM		 4119 foreach my $chain (keys %$statushash) {
4120 next if $statushash->{$chain}->{action} ne 'delete';
4121 $cmdlist .= "-F $chain\n";
4122 }
4123 foreach my $chain (keys %$statushash) {
4124 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 4125 next if $chain eq 'PVEFW-INPUT';
4126 next if $chain eq 'PVEFW-OUTPUT';
4127 next if $chain eq 'PVEFW-FORWARD';
64e0adf4 4128 next if $chain eq 'PVEFW-PREROUTING';
f5d28682
DM		 4129 $cmdlist .= "-X $chain\n";
4130 }
4131
64e0adf4 4132 my $changes = $cmdlist ne "*$table\n" ? 1 : 0;
4bd0a9c4 4133
3fa83edf
DM		 4134 $cmdlist .= "COMMIT\n";
4135
3f95d14a 4136 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 4137}
4138
d4a23c88 4139my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/;
84025e99 4140
151c209e 4141sub get_ebtables_cmdlist {
40af93c4 4142 my ($ruleset) = @_;
151c209e
AD		 4143
4144 my $changes = 0;
4145 my $cmdlist = "*filter\n";
4146
84025e99
SI		 4147 my $active_chains = ebtables_get_chains();
4148 my $statushash = get_ruleset_status($ruleset, $active_chains,
40af93c4 4149 \&iptables_chain_digest,
84025e99 4150 $pve_ebtables_chainname_regex);
151c209e 4151
84025e99
SI		 4152 # create chains first and make sure PVE rules are evaluated if active
4153 my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD';
4154 my $pve_include = 0;
4155 foreach my $chain (sort keys %$statushash) {
4156 next if ($statushash->{$chain}->{action} eq 'delete');
151c209e 4157 $cmdlist .= ":$chain ACCEPT\n";
84025e99 4158 $pve_include = 1 if ($chain eq 'PVEFW-FORWARD');
151c209e
AD		 4159 }
4160
84025e99 4161 foreach my $chain (sort keys %$statushash) {
151c209e 4162 my $stat = $statushash->{$chain};
84025e99 4163 $changes = 1 if ($stat->{action} !~ 'ignore|exists');
defdf28e 4164 next if ($stat->{action} eq 'delete');
151c209e 4165
84025e99
SI		 4166 foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) {
4167 if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) {
4168 next if ! $pve_include;
4169 $pve_include = 0;
4170 }
151c209e
AD		 4171 $cmdlist .= "$cmd\n";
4172 }
4173 }
84025e99 4174 $cmdlist .= "$append_pve_to_forward\n" if $pve_include;
151c209e
AD		 4175
4176 return wantarray ? ($cmdlist, $changes) : $cmdlist;
4177}
4178
34cdedfa 4179sub get_ipset_cmdlist {
40af93c4 4180 my ($ruleset) = @_;
34cdedfa
AD		 4181
4182 my $cmdlist = "";
4183
dd7a13fd
DM		 4184 my $delete_cmdlist = "";
4185
4bd0a9c4 4186 my $active_chains = ipset_get_chains();
40af93c4 4187 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest);
34cdedfa 4188
e34d0e58 4189 # remove stale _swap chains
30f1b100
DM		 4190 foreach my $chain (keys %$active_chains) {
4191 if ($chain =~ m/^PVEFW-\S+_swap$/) {
4192 $cmdlist .= "destroy $chain\n";
4193 }
4194 }
4195
c69cf614 4196 foreach my $chain (keys %$ruleset) {
c69cf614
DM		 4197 my $stat = $statushash->{$chain};
4198 die "internal error" if !$stat;
4199
4200 if ($stat->{action} eq 'create') {
4201 foreach my $cmd (@{$ruleset->{$chain}}) {
4202 $cmdlist .= "$cmd\n";
4203 }
4204 }
4205 }
4206
4207 foreach my $chain (keys %$ruleset) {
6d959e3f
DM		 4208 my $stat = $statushash->{$chain};
4209 die "internal error" if !$stat;
34cdedfa 4210
dd7a13fd
DM		 4211 if ($stat->{action} eq 'update') {
4212 my $chain_swap = $chain."_swap";
cbb5d6f3 4213
dd7a13fd
DM		 4214 foreach my $cmd (@{$ruleset->{$chain}}) {
4215 $cmd =~ s/$chain/$chain_swap/;
4216 $cmdlist .= "$cmd\n";
34cdedfa 4217 }
dd7a13fd
DM		 4218 $cmdlist .= "swap $chain_swap $chain\n";
4219 $cmdlist .= "flush $chain_swap\n";
4220 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 4221 }
dd7a13fd 4222 }
3f95d14a 4223
88c26d5e 4224 # the remove unused chains
c69cf614 4225 foreach my $chain (keys %$statushash) {
dd7a13fd 4226 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 4227
dd7a13fd
DM		 4228 $delete_cmdlist .= "flush $chain\n";
4229 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 4230 }
4231
dd7a13fd 4232 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 4233
dd7a13fd 4234 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 4235}
4236
6b9f68a2 4237sub apply_ruleset {
40af93c4 4238 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = @_;
6b9f68a2
DM		 4239
4240 enable_bridge_firewall();
4241
cbb5d6f3 4242 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
40af93c4 4243 get_ipset_cmdlist($ipset_ruleset);
6b9f68a2 4244
64e0adf4
AD		 4245 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset->{filter});
4246 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6->{filter}, "ip6tables");
40af93c4 4247 my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset);
64e0adf4
AD		 4248 my ($cmdlist_raw, $changes_raw) = get_ruleset_cmdlist($ruleset->{raw}, undef, 'raw');
4249 my ($cmdlistv6_raw, $changesv6_raw) = get_ruleset_cmdlist($rulesetv6->{raw}, "ip6tables", 'raw');
2a052ee3 4250
81a0bf43
DM		 4251 if ($verbose) {
4252 if ($ipset_changes) {
4253 print "ipset changes:\n";
4254 print $ipset_create_cmdlist if $ipset_create_cmdlist;
4255 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
4256 }
3f95d14a 4257
81a0bf43
DM		 4258 if ($changes) {
4259 print "iptables changes:\n";
4260 print $cmdlist;
4261 }
17da5c0f
AD		 4262
4263 if ($changesv6) {
4264 print "ip6tables changes:\n";
4265 print $cmdlistv6;
4266 }
151c209e 4267
64e0adf4
AD		 4268 if ($changes_raw) {
4269 print "iptables table raw changes:\n";
4270 print $cmdlist_raw;
4271 }
4272
4273 if ($changesv6_raw) {
4274 print "ip6tables table raw changes:\n";
4275 print $cmdlistv6_raw;
4276 }
4277
151c209e
AD		 4278 if ($ebtables_changes) {
4279 print "ebtables changes:\n";
4280 print $ebtables_cmdlist;
4281 }
81a0bf43 4282 }
3fa83edf 4283
259db1e6
DM		 4284 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
4285 PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || '');
4286
2a052ee3 4287 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 4288
259db1e6
DM		 4289 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
4290 PVE::Tools::file_set_contents($tmpfile, $cmdlist || '');
4291
3fa83edf 4292 iptables_restore_cmdlist($cmdlist);
259db1e6 4293
64e0adf4
AD		 4294 $tmpfile = "$pve_fw_status_dir/ip4cmdlistraw";
4295 PVE::Tools::file_set_contents($tmpfile, $cmdlist_raw || '');
4296
4297 iptables_restore_cmdlist($cmdlist_raw, 'raw');
4298
259db1e6
DM		 4299 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
4300 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
4301
17da5c0f 4302 ip6tables_restore_cmdlist($cmdlistv6);
3fa83edf 4303
64e0adf4
AD		 4304 $tmpfile = "$pve_fw_status_dir/ip6cmdlistraw";
4305 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6_raw || '');
4306
4307 ip6tables_restore_cmdlist($cmdlistv6_raw, 'raw');
4308
259db1e6
DM		 4309 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
4310 PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
4311
dd7a13fd 4312 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 4313
151c209e
AD		 4314 ebtables_restore_cmdlist($ebtables_cmdlist);
4315
4316 $tmpfile = "$pve_fw_status_dir/ebtablescmdlist";
4317 PVE::Tools::file_set_contents($tmpfile, $ebtables_cmdlist || '');
4318
6158271d 4319 # test: re-read status and check if everything is up to date
64e0adf4 4320 my $ruleset_filter = $ruleset->{filter};
4bd0a9c4 4321 my $active_chains = iptables_get_chains();
64e0adf4 4322 my $statushash = get_ruleset_status($ruleset_filter, $active_chains, \&iptables_chain_digest);
3fa83edf
DM		 4323
4324 my $errors;
64e0adf4 4325 foreach my $chain (sort keys %$ruleset_filter) {
3fa83edf
DM		 4326 my $stat = $statushash->{$chain};
4327 if ($stat->{action} ne 'exists') {
4328 warn "unable to update chain '$chain'\n";
4329 $errors = 1;
4330 }
4331 }
b6360c3f 4332
64e0adf4 4333 my $rulesetv6_filter = $rulesetv6->{filter};
17da5c0f 4334 my $active_chainsv6 = iptables_get_chains("ip6tables");
64e0adf4 4335 my $statushashv6 = get_ruleset_status($rulesetv6_filter, $active_chainsv6, \&iptables_chain_digest);
17da5c0f 4336
64e0adf4 4337 foreach my $chain (sort keys %$rulesetv6_filter) {
17da5c0f
AD		 4338 my $stat = $statushashv6->{$chain};
4339 if ($stat->{action} ne 'exists') {
4340 warn "unable to update chain '$chain'\n";
4341 $errors = 1;
4342 }
4343 }
4344
64e0adf4
AD		 4345 my $ruleset_raw = $ruleset->{raw};
4346 my $active_chains_raw = iptables_get_chains(undef, 'raw');
4347 my $statushash_raw = get_ruleset_status($ruleset_raw, $active_chains_raw, \&iptables_chain_digest);
4348
4349 foreach my $chain (sort keys %$ruleset_raw) {
4350 my $stat = $statushash_raw->{$chain};
4351 if ($stat->{action} ne 'exists') {
4352 warn "unable to update chain '$chain'\n";
4353 $errors = 1;
4354 }
4355 }
4356
4357 my $rulesetv6_raw = $rulesetv6->{raw};
4358 my $active_chainsv6_raw = iptables_get_chains("ip6tables", 'raw');
4359 my $statushashv6_raw = get_ruleset_status($rulesetv6_raw, $active_chainsv6_raw, \&iptables_chain_digest);
4360
4361 foreach my $chain (sort keys %$rulesetv6_raw) {
4362 my $stat = $statushashv6_raw->{$chain};
4363 if ($stat->{action} ne 'exists') {
4364 warn "unable to update chain '$chain'\n";
4365 $errors = 1;
4366 }
4367 }
4368
151c209e 4369 my $active_ebtables_chains = ebtables_get_chains();
84025e99
SI		 4370 my $ebtables_statushash = get_ruleset_status($ebtables_ruleset,
4371 $active_ebtables_chains, \&iptables_chain_digest,
40af93c4 4372 $pve_ebtables_chainname_regex);
151c209e
AD		 4373
4374 foreach my $chain (sort keys %$ebtables_ruleset) {
4375 my $stat = $ebtables_statushash->{$chain};
4376 if ($stat->{action} ne 'exists') {
4377 warn "ebtables : unable to update chain '$chain'\n";
4378 $errors = 1;
4379 }
4380 }
4381
3fa83edf 4382 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 4383
4384 update_nf_conntrack_max($hostfw_conf);
4385
4386 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
4387
ac5dd88e
AD		 4388 update_nf_conntrack_tcp_timeout_syn_recv($hostfw_conf);
4389
6c27f4f3 4390 update_nf_conntrack_logging($hostfw_conf);
b6360c3f
DM		 4391}
4392
490cdead
DM		 4393sub update_nf_conntrack_max {
4394 my ($hostfw_conf) = @_;
4395
b2ec31cc 4396 my $max = 262144; # reasonable default (2^16 * 4), see nf_conntrack-sysctl docs
490cdead
DM		 4397
4398 my $options = $hostfw_conf->{options} || {};
4399
4400 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
4401 $max = $options->{nf_conntrack_max};
4402 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
4403 }
4404
4405 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
4406 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
4407
4408 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
4409
4410 if ($current != $max) {
4411 my $hashsize = int($max/4);
4412 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
4413 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
4414 }
4415}
4416
28c082a1
AD		 4417sub update_nf_conntrack_tcp_timeout_established {
4418 my ($hostfw_conf) = @_;
4419
4420 my $options = $hostfw_conf->{options} || {};
4421
4422 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
4423
4424 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
4425}
4426
ac5dd88e
AD		 4427sub update_nf_conntrack_tcp_timeout_syn_recv {
4428 my ($hostfw_conf) = @_;
4429
4430 my $options = $hostfw_conf->{options} || {};
4431
4432 my $value = defined($options->{nf_conntrack_tcp_timeout_syn_recv}) ? $options->{nf_conntrack_tcp_timeout_syn_recev} : 60;
4433
4434 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_syn_recv", $value);
4435}
4436
6c27f4f3
DL		 4437my $log_nf_conntrack_enabled = undef;
4438sub update_nf_conntrack_logging {
4439 my ($hostfw_conf) = @_;
4440
4441 my $options = $hostfw_conf->{options} || {};
4442 my $value = $options->{log_nf_conntrack} || 0;
4443 if (!defined($log_nf_conntrack_enabled)
4444 || $value != $log_nf_conntrack_enabled)
4445 {
4446 my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack";
4447 PVE::Tools::file_set_contents($tmpfile, $value);
4448
c1031ab1 4449 run_command([qw(systemctl try-reload-or-restart pvefw-logger.service)]);
6c27f4f3
DL		 4450 $log_nf_conntrack_enabled = $value;
4451 }
4452}
4453
c4a2e5ae
DM		 4454sub remove_pvefw_chains {
4455
7b7b2654
AD		 4456 PVE::Firewall::remove_pvefw_chains_iptables("iptables");
4457 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
64e0adf4
AD		 4458 PVE::Firewall::remove_pvefw_chains_iptables("iptables", "raw");
4459 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables", "raw");
7b7b2654 4460 PVE::Firewall::remove_pvefw_chains_ipset();
0e8af63d 4461 PVE::Firewall::remove_pvefw_chains_ebtables();
7b7b2654
AD		 4462
4463}
4464
4465sub remove_pvefw_chains_iptables {
64e0adf4 4466 my ($iptablescmd, $table) = @_;
7b7b2654 4467
64e0adf4
AD		 4468 $table = 'filter' if !$table;
4469
4470 my ($chash, $hooks) = iptables_get_chains($iptablescmd, $table);
4471 my $cmdlist = "*$table\n";
c4a2e5ae 4472
64e0adf4 4473 foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
c4a2e5ae
DM		 4474 if ($hooks->{$h}) {
4475 $cmdlist .= "-D $h -j PVEFW-$h\n";
4476 }
4477 }
cbb5d6f3 4478
c4a2e5ae
DM		 4479 foreach my $chain (keys %$chash) {
4480 $cmdlist .= "-F $chain\n";
4481 }
4482
4483 foreach my $chain (keys %$chash) {
4484 $cmdlist .= "-X $chain\n";
4485 }
4486 $cmdlist .= "COMMIT\n";
4487
7b7b2654 4488 if($iptablescmd eq "ip6tables") {
64e0adf4 4489 ip6tables_restore_cmdlist($cmdlist, $table);
7b7b2654 4490 } else {
64e0adf4 4491 iptables_restore_cmdlist($cmdlist, $table);
7b7b2654
AD		 4492 }
4493}
4494
4495sub remove_pvefw_chains_ipset {
55fad3b7
DM		 4496
4497 my $ipset_chains = ipset_get_chains();
4498
7b7b2654 4499 my $cmdlist = "";
75a12a9d 4500
55fad3b7 4501 foreach my $chain (keys %$ipset_chains) {
88c26d5e
DM		 4502 $cmdlist .= "flush $chain\n";
4503 $cmdlist .= "destroy $chain\n";
55fad3b7
DM		 4504 }
4505
7b7b2654 4506 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 4507}
4508
0e8af63d
FG		 4509sub remove_pvefw_chains_ebtables {
4510 # apply empty ruleset = remove all our chains
4511 ebtables_restore_cmdlist(get_ebtables_cmdlist({}));
4512}
4513
8b453a09
DM		 4514sub init {
4515 my $cluster_conf = load_clusterfw_conf();
4516 my $cluster_options = $cluster_conf->{options};
4517 my $enable = $cluster_options->{enable};
4518
4519 return if !$enable;
4520
4521 # load required modules here
4522}
4523
6b9f68a2 4524sub update {
6b9f68a2 4525 my $code = sub {
3dfa8a7f
DM		 4526
4527 my $cluster_conf = load_clusterfw_conf();
4528 my $cluster_options = $cluster_conf->{options};
4529
55fad3b7 4530 if (!$cluster_options->{enable}) {
b22130d3 4531 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 4532 return;
4533 }
4534
50f9a28d 4535 my $hostfw_conf = load_hostfw_conf($cluster_conf);
3dfa8a7f 4536
c5e8b008 4537 my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 4538
151c209e 4539 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
6b9f68a2
DM		 4540 };
4541
4542 run_locked($code);
4543}
4544
b6360c3f 45451;
Firewall test scripts