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bump version to 4.1-2
[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 = {
041b9277
DM		 788 'destination-unreachable' => 1,
789 'no-route' => 1,
790 'communication-prohibited' => 1,
d676aa18 791 'beyond-scope' => 1,
041b9277
DM		 792 'address-unreachable' => 1,
793 'port-unreachable' => 1,
d676aa18
ML		 794 'failed-policy' => 1,
795 'reject-route' => 1,
041b9277
DM		 796 'packet-too-big' => 1,
797 'time-exceeded' => 1,
798 'ttl-zero-during-transit' => 1,
799 'ttl-zero-during-reassembly' => 1,
800 'parameter-problem' => 1,
801 'bad-header' => 1,
802 'unknown-header-type' => 1,
803 'unknown-option' => 1,
804 'echo-request' => 1,
805 'echo-reply' => 1,
806 'router-solicitation' => 1,
807 'router-advertisement' => 1,
593604cc 808 'neighbor-solicitation' => 1,
041b9277 809 'neighbour-solicitation' => 1,
593604cc 810 'neighbor-advertisement' => 1,
041b9277
DM		 811 'neighbour-advertisement' => 1,
812 'redirect' => 1,
813};
814
0588bf2a
TL		 815my $is_valid_icmp_type = sub {
816 my ($type, $valid_types) = @_;
817
818 if ($type =~ m/^\d+$/) {
819 # values for icmp-type range between 0 and 255 (8 bit field)
820 die "invalid icmp-type '$type'\n" if $type > 255;
821 } else {
822 die "unknown icmp-type '$type'\n" if !defined($valid_types->{$type});
823 }
824};
825
54cd19a8 826sub init_firewall_macros {
6158271d 827
961b4928 828 $pve_fw_parsed_macros = {};
9aab3127 829
21a18e53
WB		 830 my $parse = sub {
831 my ($k, $macro) = @_;
e5076eee 832 my $lc_name = lc($k);
21a18e53
WB		 833 $pve_fw_macro_ipversion->{$k} = 0;
834 while (!ref($macro->[0])) {
835 my $desc = shift @$macro;
836 if ($desc eq 'ipv4only') {
837 $pve_fw_macro_ipversion->{$k} = 4;
838 } elsif ($desc eq 'ipv6only') {
839 $pve_fw_macro_ipversion->{$k} = 6;
840 } else {
841 $pve_fw_macro_descr->{$k} = $desc;
842 }
ebd54ae9 843 }
e5076eee
DM		 844 $pve_fw_preferred_macro_names->{$lc_name} = $k;
845 $pve_fw_parsed_macros->{$k} = $macro;
21a18e53
WB		 846 };
847
848 foreach my $k (keys %$pve_fw_macros) {
849 &$parse($k, $pve_fw_macros->{$k});
850 }
851
852 foreach my $k (keys %$pve_ipv6fw_macros) {
853 next if $pve_fw_parsed_macros->{$k};
854 &$parse($k, $pve_ipv6fw_macros->{$k});
855 $pve_fw_macro_ipversion->{$k} = 6;
961b4928 856 }
9aab3127
DM		 857}
858
54cd19a8
DM		 859init_firewall_macros();
860
ebd54ae9
DM		 861sub get_macros {
862 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
863}
864
fcba0beb
DM		 865my $etc_services;
866
867sub get_etc_services {
868
869 return $etc_services if $etc_services;
870
871 my $filename = "/etc/services";
872
873 my $fh = IO::File->new($filename, O_RDONLY);
874 if (!$fh) {
875 warn "unable to read '$filename' - $!\n";
876 return {};
877 }
878
879 my $services = {};
880
881 while (my $line = <$fh>) {
882 chomp ($line);
883 next if $line =~m/^#/;
884 next if ($line =~m/^\s*$/);
885
d50f24ea 886 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp|sctp).*$!) {
fcba0beb 887 $services->{byid}->{$2}->{name} = $1;
35b66e9d 888 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 889 $services->{byid}->{$2}->{$3} = 1;
890 $services->{byname}->{$1} = $services->{byid}->{$2};
891 }
892 }
893
894 close($fh);
895
6158271d
DM		 896 $etc_services = $services;
897
3a616aa0 898
fcba0beb
DM		 899 return $etc_services;
900}
901
58bc569d
WB		 902sub parse_protocol_file {
903 my ($filename) = @_;
fcba0beb
DM		 904
905 my $fh = IO::File->new($filename, O_RDONLY);
906 if (!$fh) {
907 warn "unable to read '$filename' - $!\n";
908 return {};
909 }
910
911 my $protocols = {};
912
913 while (my $line = <$fh>) {
914 chomp ($line);
915 next if $line =~m/^#/;
916 next if ($line =~m/^\s*$/);
917
d6dd6e96 918 if ($line =~ m!^(\S+)\s+(\d+)(?:\s+.*)?$!) {
fcba0beb
DM		 919 $protocols->{byid}->{$2}->{name} = $1;
920 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
921 }
922 }
923
924 close($fh);
925
58bc569d
WB		 926 return $protocols;
927}
928
929my $etc_protocols;
930
931sub get_etc_protocols {
932 return $etc_protocols if $etc_protocols;
933
934 my $protocols = parse_protocol_file('/etc/protocols');
935
041b9277
DM		 936 # add special case for ICMP v6
937 $protocols->{byid}->{icmpv6}->{name} = "icmpv6";
938 $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6};
939
fcba0beb
DM		 940 $etc_protocols = $protocols;
941
942 return $etc_protocols;
943}
944
b452ea10
WB		 945my $etc_ethertypes;
946
947sub get_etc_ethertypes {
948 $etc_ethertypes = parse_protocol_file('/etc/ethertypes')
949 if !$etc_ethertypes;
950 return $etc_ethertypes;
951}
952
525778d7 953my $__local_network;
93be4333 954
525778d7 955sub local_network {
ac633d30 956 my ($new_value) = @_;
93be4333 957
525778d7 958 $__local_network = $new_value if defined($new_value);
ac633d30 959
525778d7 960 return $__local_network if defined($__local_network);
93be4333
DM		 961
962 eval {
963 my $nodename = PVE::INotify::nodename();
964
965 my $ip = PVE::Cluster::remote_node_ip($nodename);
966
967 my $testip = Net::IP->new($ip);
bfc488f6 968
5dc356af
WB		 969 my $isv6 = $testip->version == 6;
970 my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route()
971 : PVE::ProcFSTools::read_proc_net_route();
93be4333 972 foreach my $entry (@$routes) {
5dc356af
WB		 973 my $mask;
974 if ($isv6) {
975 $mask = $entry->{prefix};
15c80000 976 next if !$mask; # skip the default route...
5dc356af 977 } else {
2e1ae6b9 978 $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}};
5dc356af
WB		 979 next if !defined($mask);
980 }
93be4333
DM		 981 my $cidr = "$entry->{dest}/$mask";
982 my $testnet = Net::IP->new($cidr);
15c80000
WB		 983 my $overlap = $testnet->overlaps($testip);
984 if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP ||
985 $overlap == $Net::IP::IP_IDENTICAL)
986 {
525778d7 987 $__local_network = $cidr;
93be4333
DM		 988 return;
989 }
990 }
991 };
992 warn $@ if $@;
993
525778d7 994 return $__local_network;
93be4333
DM		 995}
996
6d959e3f 997# ipset names are limited to 31 characters,
75a12a9d
TL		 998# and we use '-v4' or '-v6' to indicate IP versions,
999# and we use '_swap' suffix for atomic update,
6d959e3f 1000# for example PVEFW-${VMID}-${ipset_name}_swap
30150dca 1001
88c26d5e 1002my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
708ba714
DM		 1003
1004sub compute_ipset_chain_name {
88c26d5e 1005 my ($vmid, $ipset_name, $ipversion) = @_;
708ba714
DM		 1006
1007 $vmid = 0 if !defined($vmid);
1008
88c26d5e 1009 my $id = "$vmid-${ipset_name}-v$ipversion";
708ba714 1010
88c26d5e 1011 if (length($id) > $max_iptables_ipset_name_length) {
708ba714
DM		 1012 $id = PVE::Tools::fnv31a_hex($id);
1013 }
1014
1015 return "PVEFW-$id";
1016}
1017
b692f42c
DM		 1018sub compute_ipfilter_ipset_name {
1019 my ($iface) = @_;
1020
1021 return "ipfilter-$iface";
1022}
1023
ecbea048
DM		 1024sub parse_address_list {
1025 my ($str) = @_;
1026
e2c62733
DM		 1027 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
1028 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
1029 return;
1030 }
1031
1032 if ($str =~ m/^${ip_alias_pattern}$/) {
1033 die "alias name too long\n" if length($str) > $max_alias_name_length;
1034 return;
1035 }
d72beb8e 1036
3162af6b
DM		 1037 my $count = 0;
1038 my $iprange = 0;
a589b6ac 1039 my $ipversion;
7697c041 1040
55b47371
WB		 1041 my @elements = split(/,/, $str);
1042 die "extraneous commas in list\n" if $str ne join(',', @elements);
1043 foreach my $elem (@elements) {
3162af6b 1044 $count++;
c344e509
DM		 1045 my $ip = Net::IP->new($elem);
1046 if (!$ip) {
ecbea048
DM		 1047 my $err = Net::IP::Error();
1048 die "invalid IP address: $err\n";
1049 }
3162af6b 1050 $iprange = 1 if $elem =~ m/-/;
a589b6ac 1051
c344e509 1052 my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4;
a589b6ac
DM		 1053
1054 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
006490cb 1055 if $ipversion && ($new_ipversion != $ipversion);
a589b6ac
DM		 1056
1057 $ipversion = $new_ipversion;
ecbea048 1058 }
e34d0e58 1059
5163367b 1060 die "you can't use a range in a list\n" if $iprange && $count > 1;
a589b6ac 1061
7697c041 1062 return $ipversion;
ecbea048 1063}
dddd9413 1064
fcba0beb 1065sub parse_port_name_number_or_range {
a1c04f71 1066 my ($str, $dport) = @_;
fcba0beb
DM		 1067
1068 my $services = PVE::Firewall::get_etc_services();
7ca36671 1069 my $count = 0;
041b7e8e
DM		 1070 my $icmp_port = 0;
1071
55b47371
WB		 1072 my @elements = split(/,/, $str);
1073 die "extraneous commas in list\n" if $str ne join(',', @elements);
1074 foreach my $item (@elements) {
aced7e7d 1075 if ($item =~ m/^([0-9]+):([0-9]+)$/) {
6a241ca7 1076 $count += 2;
7ca36671
DM		 1077 my ($port1, $port2) = ($1, $2);
1078 die "invalid port '$port1'\n" if $port1 > 65535;
1079 die "invalid port '$port2'\n" if $port2 > 65535;
12be0dfe 1080 die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2;
aced7e7d 1081 } elsif ($item =~ m/^([0-9]+)$/) {
6a241ca7 1082 $count += 1;
7ca36671
DM		 1083 my $port = $1;
1084 die "invalid port '$port'\n" if $port > 65535;
1085 } else {
a1c04f71 1086 if ($dport && $icmp_type_names->{$item}) {
041b7e8e 1087 $icmp_port = 1;
a1c04f71 1088 } elsif ($dport && $icmpv6_type_names->{$item}) {
041b9277 1089 $icmp_port = 1;
041b7e8e 1090 } else {
e34d0e58 1091 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 1092 }
fcba0beb
DM		 1093 }
1094 }
1095
1978585a 1096 die "ICMP ports not allowed in port range\n" if $icmp_port && $count > 0;
6a241ca7
WB		 1097
1098 # I really don't like to use the word number here, but it's the only thing
1099 # that makes sense in a literal way. The range 1:100 counts as 2, not as
1100 # one and not as 100...
1101 die "too many entries in port list (> 15 numbers)\n"
1102 if $count > 15;
041b7e8e 1103
f776d6de 1104 return (scalar(@elements) > 1);
fcba0beb
DM		 1105}
1106
a1c04f71
WB		 1107PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec);
1108sub pve_fw_verify_sport_spec {
1109 my ($portstr) = @_;
1110
1111 parse_port_name_number_or_range($portstr, 0);
1112
1113 return $portstr;
1114}
1115
1116PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec);
1117sub pve_fw_verify_dport_spec {
54cd19a8
DM		 1118 my ($portstr) = @_;
1119
a1c04f71 1120 parse_port_name_number_or_range($portstr, 1);
54cd19a8
DM		 1121
1122 return $portstr;
1123}
1124
d31689ee
DM		 1125PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
1126sub pve_fw_verify_addr_spec {
54cd19a8
DM		 1127 my ($list) = @_;
1128
1129 parse_address_list($list);
1130
1131 return $list;
1132}
1133
1134PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
1135sub pve_fw_verify_protocol_spec {
1136 my ($proto) = @_;
1137
1138 my $protocols = get_etc_protocols();
1139
1140 die "unknown protocol '$proto'\n" if $proto &&
1141 !(defined($protocols->{byname}->{$proto}) ||
1142 defined($protocols->{byid}->{$proto}));
1143
1144 return $proto;
1145}
1146
1147
d1c53b3e 1148# helper function for API
d1c53b3e 1149
5d38d64f
DM		 1150sub copy_opject_with_digest {
1151 my ($object) = @_;
1152
1153 my $sha = Digest::SHA->new('sha1');
1154
1155 my $res = {};
1156 foreach my $k (sort keys %$object) {
1157 my $v = $object->{$k};
0365eb68 1158 next if !defined($v);
5d38d64f
DM		 1159 $res->{$k} = $v;
1160 $sha->add($k, ':', $v, "\n");
1161 }
1162
55e686c7 1163 my $digest = $sha->hexdigest;
5d38d64f
DM		 1164
1165 $res->{digest} = $digest;
1166
1167 return wantarray ? ($res, $digest) : $res;
1168}
1169
1170sub copy_list_with_digest {
1171 my ($list) = @_;
1172
1173 my $sha = Digest::SHA->new('sha1');
1174
1175 my $res = [];
1176 foreach my $entry (@$list) {
1177 my $data = {};
1178 foreach my $k (sort keys %$entry) {
1179 my $v = $entry->{$k};
0365eb68 1180 next if !defined($v);
5d38d64f 1181 $data->{$k} = $v;
6d9246e7 1182 # Note: digest ignores refs ($rule->{errors})
e83f0d00
DC		 1183 # since Digest::SHA expects a series of bytes,
1184 # we have to encode the value here to prevent errors when
1185 # using utf8 characters (eg. in comments)
1186 $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ;
5d38d64f
DM		 1187 }
1188 push @$res, $data;
1189 }
1190
55e686c7 1191 my $digest = $sha->hexdigest;
5d38d64f
DM		 1192
1193 foreach my $entry (@$res) {
1194 $entry->{digest} = $digest;
1195 }
1196
1197 return wantarray ? ($res, $digest) : $res;
1198}
1199
e313afe0
DM		 1200our $cluster_option_properties = {
1201 enable => {
1202 description => "Enable or disable the firewall cluster wide.",
1203 type => 'integer',
1204 minimum => 0,
1205 optional => 1,
1206 },
2549e7ef
SI		 1207 ebtables => {
1208 description => "Enable ebtables rules cluster wide.",
1209 type => 'boolean',
1210 default => 1,
1211 optional => 1,
1212 },
e313afe0
DM		 1213 policy_in => {
1214 description => "Input policy.",
1215 type => 'string',
1216 optional => 1,
1217 enum => ['ACCEPT', 'REJECT', 'DROP'],
1218 },
1219 policy_out => {
1220 description => "Output policy.",
1221 type => 'string',
1222 optional => 1,
1223 enum => ['ACCEPT', 'REJECT', 'DROP'],
1224 },
cc37e000
TL		 1225 log_ratelimit => {
1226 description => "Log ratelimiting settings",
1227 type => 'string', format => {
1228 enable => {
1229 default_key => 1,
1230 description => 'Enable or disable log rate limiting',
1231 type => 'boolean',
1232 default => '1',
1233 },
1234 rate => {
1235 type => 'string',
1236 description => 'Frequency with which the burst bucket gets refilled',
1237 optional => 1,
1238 pattern => '[1-9][0-9]*\/(second|minute|hour|day)',
1239 format_description => 'rate',
1240 default => '1/second',
1241 },
1242 burst => {
1243 type => 'integer',
1244 minimum => 0,
1245 optional => 1,
1246 description => 'Inital burst of packages which will get logged',
1247 default => 5,
1248 },
1249 },
1250 optional => 1,
1251 },
e313afe0
DM		 1252};
1253
1254our $host_option_properties = {
1255 enable => {
1256 description => "Enable host firewall rules.",
1257 type => 'boolean',
1258 optional => 1,
1259 },
1260 log_level_in => get_standard_option('pve-fw-loglevel', {
1261 description => "Log level for incoming traffic." }),
1262 log_level_out => get_standard_option('pve-fw-loglevel', {
1263 description => "Log level for outgoing traffic." }),
1264 tcp_flags_log_level => get_standard_option('pve-fw-loglevel', {
1265 description => "Log level for illegal tcp flags filter." }),
1266 smurf_log_level => get_standard_option('pve-fw-loglevel', {
1267 description => "Log level for SMURFS filter." }),
1268 nosmurfs => {
1269 description => "Enable SMURFS filter.",
1270 type => 'boolean',
1271 optional => 1,
1272 },
1273 tcpflags => {
1274 description => "Filter illegal combinations of TCP flags.",
1275 type => 'boolean',
e1639957 1276 default => 0,
e313afe0
DM		 1277 optional => 1,
1278 },
1279 nf_conntrack_max => {
1280 description => "Maximum number of tracked connections.",
1281 type => 'integer',
1282 optional => 1,
b2ec31cc 1283 default => 262144,
e313afe0
DM		 1284 minimum => 32768,
1285 },
1286 nf_conntrack_tcp_timeout_established => {
1287 description => "Conntrack established timeout.",
1288 type => 'integer',
1289 optional => 1,
e1639957 1290 default => 432000,
e313afe0
DM		 1291 minimum => 7875,
1292 },
ac5dd88e
AD		 1293 nf_conntrack_tcp_timeout_syn_recv => {
1294 description => "Conntrack syn recv timeout.",
1295 type => 'integer',
1296 optional => 1,
1297 default => 60,
1298 minimum => 30,
1299 maximum => 60,
1300 },
e313afe0 1301 ndp => {
e1639957 1302 description => "Enable NDP (Neighbor Discovery Protocol).",
e313afe0 1303 type => 'boolean',
e1639957 1304 default => 0,
e313afe0
DM		 1305 optional => 1,
1306 },
27c49e25
CE		 1307 nf_conntrack_allow_invalid => {
1308 description => "Allow invalid packets on connection tracking.",
1309 type => 'boolean',
1310 default => 0,
1311 optional => 1,
1312 },
ac5dd88e
AD		 1313 protection_synflood => {
1314 description => "Enable synflood protection",
1315 type => 'boolean',
1316 default => 0,
1317 optional => 1,
1318 },
1319 protection_synflood_rate => {
1320 description => "Synflood protection rate syn/sec by ip src.",
1321 type => 'integer',
1322 optional => 1,
1323 default => 200,
1324 },
1325 protection_synflood_burst => {
1326 description => "Synflood protection rate burst by ip src.",
1327 type => 'integer',
1328 optional => 1,
1329 default => 1000,
1330 },
e17d3eec
ML		 1331 log_nf_conntrack => {
1332 description => "Enable logging of conntrack information.",
1333 type => 'boolean',
1334 default => 0,
1335 optional => 1
1336 },
e313afe0
DM		 1337};
1338
1339our $vm_option_properties = {
1340 enable => {
1341 description => "Enable/disable firewall rules.",
1342 type => 'boolean',
e1639957 1343 default => 0,
e313afe0
DM		 1344 optional => 1,
1345 },
1346 macfilter => {
1347 description => "Enable/disable MAC address filter.",
1348 type => 'boolean',
e1639957 1349 default => 0,
e313afe0
DM		 1350 optional => 1,
1351 },
1352 dhcp => {
1353 description => "Enable DHCP.",
1354 type => 'boolean',
e1639957 1355 default => 0,
e313afe0
DM		 1356 optional => 1,
1357 },
1358 ndp => {
e1639957 1359 description => "Enable NDP (Neighbor Discovery Protocol).",
e313afe0 1360 type => 'boolean',
e1639957 1361 default => 0,
e313afe0
DM		 1362 optional => 1,
1363 },
1364 radv => {
1365 description => "Allow sending Router Advertisement.",
1366 type => 'boolean',
1367 optional => 1,
1368 },
1369 ipfilter => {
1370 description => "Enable default IP filters. " .
1371 "This is equivalent to adding an empty ipfilter-net<id> ipset " .
1372 "for every interface. Such ipsets implicitly contain sane default " .
1373 "restrictions such as restricting IPv6 link local addresses to " .
1374 "the one derived from the interface's MAC address. For containers " .
1375 "the configured IP addresses will be implicitly added.",
1376 type => 'boolean',
1377 optional => 1,
1378 },
1379 policy_in => {
1380 description => "Input policy.",
1381 type => 'string',
1382 optional => 1,
1383 enum => ['ACCEPT', 'REJECT', 'DROP'],
1384 },
1385 policy_out => {
1386 description => "Output policy.",
1387 type => 'string',
1388 optional => 1,
1389 enum => ['ACCEPT', 'REJECT', 'DROP'],
1390 },
1391 log_level_in => get_standard_option('pve-fw-loglevel', {
1392 description => "Log level for incoming traffic." }),
1393 log_level_out => get_standard_option('pve-fw-loglevel', {
1394 description => "Log level for outgoing traffic." }),
1395
1396};
1397
fb060a52 1398
7a332151 1399my $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 1400
7a332151 1401my $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 1402
9c7e0858
DM		 1403my $rule_properties = {
1404 pos => {
1405 description => "Update rule at position <pos>.",
1406 type => 'integer',
1407 minimum => 0,
1408 optional => 1,
1409 },
c71e785f 1410 digest => get_standard_option('pve-config-digest'),
9c7e0858 1411 type => {
e50429af 1412 description => "Rule type.",
9c7e0858
DM		 1413 type => 'string',
1414 optional => 1,
1415 enum => ['in', 'out', 'group'],
1416 },
1417 action => {
c14dacdf 1418 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 1419 type => 'string',
1420 optional => 1,
44be8ceb 1421 pattern => $security_group_name_pattern,
c14dacdf
DM		 1422 maxLength => 20,
1423 minLength => 2,
9c7e0858 1424 },
e5076eee 1425 macro => {
e50429af 1426 description => "Use predefined standard macro.",
e5076eee
DM		 1427 type => 'string',
1428 optional => 1,
54cd19a8 1429 maxLength => 128,
e5076eee 1430 },
fb060a52 1431 iface => get_standard_option('pve-iface', {
7ccaa5f1 1432 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		 1433 optional => 1
1434 }),
9c7e0858 1435 source => {
fb060a52 1436 description => "Restrict packet source address. $addr_list_descr",
d31689ee 1437 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1438 optional => 1,
1439 },
1440 dest => {
fb060a52 1441 description => "Restrict packet destination address. $addr_list_descr",
d31689ee 1442 type => 'string', format => 'pve-fw-addr-spec',
9c7e0858
DM		 1443 optional => 1,
1444 },
1445 proto => {
fb060a52 1446 description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.",
54cd19a8 1447 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 1448 optional => 1,
1449 },
1450 enable => {
e50429af 1451 description => "Flag to enable/disable a rule.",
72d055fc
AG		 1452 type => 'integer',
1453 minimum => 0,
9c7e0858
DM		 1454 optional => 1,
1455 },
3489f8a2
CE		 1456 log => get_standard_option('pve-fw-loglevel', {
1457 description => "Log level for firewall rule.",
1458 }),
9c7e0858 1459 sport => {
fb060a52 1460 description => "Restrict TCP/UDP source port. $port_descr",
a1c04f71 1461 type => 'string', format => 'pve-fw-sport-spec',
9c7e0858
DM		 1462 optional => 1,
1463 },
1464 dport => {
fb060a52 1465 description => "Restrict TCP/UDP destination port. $port_descr",
a1c04f71 1466 type => 'string', format => 'pve-fw-dport-spec',
9c7e0858
DM		 1467 optional => 1,
1468 },
1469 comment => {
e50429af 1470 description => "Descriptive comment.",
9c7e0858
DM		 1471 type => 'string',
1472 optional => 1,
1473 },
1474};
1475
1476sub add_rule_properties {
1477 my ($properties) = @_;
1478
1479 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 1480 my $h = $rule_properties->{$k};
1481 # copy data, so that we can modify later without side effects
1482 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 1483 }
cbb5d6f3 1484
9c7e0858
DM		 1485 return $properties;
1486}
1487
5b7974df
DM		 1488sub delete_rule_properties {
1489 my ($rule, $delete_str) = @_;
e34d0e58 1490
5b7974df
DM		 1491 foreach my $opt (PVE::Tools::split_list($delete_str)) {
1492 raise_param_exc({ 'delete' => "no such property ('$opt')"})
1493 if !defined($rule_properties->{$opt});
1494 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
1495 if $opt eq 'type' || $opt eq 'action';
1496 delete $rule->{$opt};
1497 }
1498
1499 return $rule;
1500}
1501
9a2745a0 1502my $apply_macro = sub {
35d1d6da 1503 my ($macro_name, $param, $verify, $ipversion) = @_;
9a2745a0
DM		 1504
1505 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1506 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1507
35d1d6da
DM		 1508 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1509 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1510 }
1511
21a18e53 1512 # skip macros which are specific to another ipversion
ff5d050e
AG		 1513 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1514 return if $ipversion != $required;
1515 }
21a18e53 1516
9a2745a0
DM		 1517 my $rules = [];
1518
1519 foreach my $templ (@$macro_rules) {
1520 my $rule = {};
1521 my $param_used = {};
1522 foreach my $k (keys %$templ) {
1523 my $v = $templ->{$k};
1524 if ($v eq 'PARAM') {
1525 $v = $param->{$k};
1526 $param_used->{$k} = 1;
1527 } elsif ($v eq 'DEST') {
1528 $v = $param->{dest};
1529 $param_used->{dest} = 1;
1530 } elsif ($v eq 'SOURCE') {
1531 $v = $param->{source};
1532 $param_used->{source} = 1;
1533 }
1534
1535 if (!defined($v)) {
1536 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 1537 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 1538 die "$msg\n";
1539 }
1540 $rule->{$k} = $v;
1541 }
1542 foreach my $k (keys %$param) {
1543 next if $k eq 'macro';
1544 next if !defined($param->{$k});
1545 next if $param_used->{$k};
1546 if (defined($rule->{$k})) {
1547 if ($rule->{$k} ne $param->{$k}) {
1548 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 1549 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 1550 die "$msg\n";
1551 }
1552 } else {
1553 $rule->{$k} = $param->{$k};
1554 }
1555 }
1556 push @$rules, $rule;
1557 }
1558
1559 return $rules;
1560};
1561
b6b8e6ad
DM		 1562my $rule_env_iface_lookup = {
1563 'ct' => 1,
1564 'vm' => 1,
1565 'group' => 0,
1566 'cluster' => 1,
1567 'host' => 1,
1568};
1569
7ca36671 1570sub verify_rule {
a523e057 1571 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
b6b8e6ad
DM		 1572
1573 my $allow_groups = $rule_env eq 'group' ? 0 : 1;
bfc488f6 1574
b6b8e6ad
DM		 1575 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1576 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
7ca36671 1577
a523e057
DM		 1578 my $errors = $rule->{errors} || {};
1579
6d9246e7 1580 my $error_count = 0;
7ca36671 1581
6d9246e7
DM		 1582 my $add_error = sub {
1583 my ($param, $msg) = @_;
d4cda423 1584 chomp $msg;
6d9246e7
DM		 1585 raise_param_exc({ $param => $msg }) if !$noerr;
1586 $error_count++;
1587 $errors->{$param} = $msg if !$errors->{$param};
1588 };
1589
eea9d2a1
DM		 1590 my $ipversion;
1591 my $set_ip_version = sub {
1592 my $vers = shift;
1593 if ($vers) {
1594 die "detected mixed ipv4/ipv6 adresses in rule\n"
1595 if $ipversion && ($vers != $ipversion);
1596 $ipversion = $vers;
1597 }
1598 };
1599
a523e057 1600 my $check_ipset_or_alias_property = sub {
ae029a88 1601 my ($name, $expected_ipversion) = @_;
a523e057
DM		 1602
1603 if (my $value = $rule->{$name}) {
1604 if ($value =~ m/^\+/) {
4dfe04e6 1605 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
bfc488f6 1606 &$add_error($name, "no such ipset '$1'")
a523e057 1607 if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
bfc488f6 1608
a523e057 1609 } else {
351052d1 1610 &$add_error($name, "invalid ipset name '$value'");
a523e057
DM		 1611 }
1612 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1613 my $alias = lc($value);
bfc488f6 1614 &$add_error($name, "no such alias '$value'")
70e524eb 1615 if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
04f5088f 1616 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
70e524eb
AD		 1617 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
1618
eea9d2a1 1619 &$set_ip_version($e->{ipversion});
a523e057
DM		 1620 }
1621 }
1622 };
1623
6d9246e7
DM		 1624 my $type = $rule->{type};
1625 my $action = $rule->{action};
bfc488f6 1626
6d9246e7
DM		 1627 &$add_error('type', "missing property") if !$type;
1628 &$add_error('action', "missing property") if !$action;
1629
1630 if ($type) {
1631 if ($type eq 'in' || $type eq 'out') {
1632 &$add_error('action', "unknown action '$action'")
1633 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1634 } elsif ($type eq 'group') {
1635 &$add_error('type', "security groups not allowed")
1636 if !$allow_groups;
1637 &$add_error('action', "invalid characters in security group name")
1638 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1639 } else {
1640 &$add_error('type', "unknown rule type '$type'");
1641 }
7ca36671 1642 }
e34d0e58 1643
dba740a9 1644 if ($rule->{iface}) {
bfc488f6 1645 &$add_error('type', "parameter -i not allowed for this rule type")
b6b8e6ad 1646 if !$allow_iface;
dba740a9 1647 eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); };
6d9246e7 1648 &$add_error('iface', $@) if $@;
fdefeeab 1649 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
b6b8e6ad
DM		 1650 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1651 if $rule->{iface} !~ m/^net(\d+)$/;
b6b8e6ad
DM		 1652 }
1653 }
7ca36671
DM		 1654
1655 if ($rule->{macro}) {
6d9246e7
DM		 1656 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1657 $rule->{macro} = $preferred_name;
1658 } else {
1659 &$add_error('macro', "unknown macro '$rule->{macro}'");
1660 }
1661 }
1662
1663 if ($rule->{proto}) {
1664 eval { pve_fw_verify_protocol_spec($rule->{proto}); };
1665 &$add_error('proto', $@) if $@;
041b9277
DM		 1666 &$set_ip_version(4) if $rule->{proto} eq 'icmp';
1667 &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
6d9246e7 1668 }
7ca36671
DM		 1669
1670 if ($rule->{dport}) {
a1c04f71 1671 eval { parse_port_name_number_or_range($rule->{dport}, 1); };
6d9246e7 1672 &$add_error('dport', $@) if $@;
48e3963e 1673 my $proto = $rule->{proto};
6d9246e7 1674 &$add_error('proto', "missing property - 'dport' requires this property")
48e3963e
WB		 1675 if !$proto;
1676 &$add_error('dport', "protocol '$proto' does not support ports")
1677 if !$PROTOCOLS_WITH_PORTS->{$proto} &&
1678 $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
6d9246e7 1679 }
7ca36671
DM		 1680
1681 if ($rule->{sport}) {
a1c04f71 1682 eval { parse_port_name_number_or_range($rule->{sport}, 0); };
6d9246e7 1683 &$add_error('sport', $@) if $@;
48e3963e 1684 my $proto = $rule->{proto};
6d9246e7 1685 &$add_error('proto', "missing property - 'sport' requires this property")
48e3963e
WB		 1686 if !$proto;
1687 &$add_error('sport', "protocol '$proto' does not support ports")
1688 if !$PROTOCOLS_WITH_PORTS->{$proto};
7ca36671
DM		 1689 }
1690
1691 if ($rule->{source}) {
75a12a9d 1692 eval {
041b9277
DM		 1693 my $source_ipversion = parse_address_list($rule->{source});
1694 &$set_ip_version($source_ipversion);
1695 };
6d9246e7 1696 &$add_error('source', $@) if $@;
ae029a88 1697 &$check_ipset_or_alias_property('source', $ipversion);
7ca36671
DM		 1698 }
1699
1700 if ($rule->{dest}) {
75a12a9d
TL		 1701 eval {
1702 my $dest_ipversion = parse_address_list($rule->{dest});
041b9277 1703 &$set_ip_version($dest_ipversion);
9e2205e5 1704 };
6d9246e7 1705 &$add_error('dest', $@) if $@;
ae029a88 1706 &$check_ipset_or_alias_property('dest', $ipversion);
7ca36671
DM		 1707 }
1708
35d1d6da
DM		 1709 $rule->{ipversion} = $ipversion if $ipversion;
1710
a523e057 1711 if ($rule->{macro} && !$error_count) {
35d1d6da 1712 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
6d9246e7
DM		 1713 if (my $err = $@) {
1714 if (ref($err) eq "PVE::Exception" && $err->{errors}) {
1715 my $eh = $err->{errors};
1716 foreach my $p (keys %$eh) {
1717 &$add_error($p, $eh->{$p});
1718 }
1719 } else {
1720 &$add_error('macro', "$err");
1721 }
1722 }
9a2745a0
DM		 1723 }
1724
6d9246e7
DM		 1725 $rule->{errors} = $errors if $error_count;
1726
7ca36671
DM		 1727 return $rule;
1728}
1729
9c7e0858
DM		 1730sub copy_rule_data {
1731 my ($rule, $param) = @_;
1732
1733 foreach my $k (keys %$rule_properties) {
1734 if (defined(my $v = $param->{$k})) {
1735 if ($v eq '' || $v eq '-') {
1736 delete $rule->{$k};
1737 } else {
1738 $rule->{$k} = $v;
1739 }
9c7e0858
DM		 1740 }
1741 }
7ca36671 1742
9c7e0858
DM		 1743 return $rule;
1744}
1745
9f6845cf
DM		 1746sub rules_modify_permissions {
1747 my ($rule_env) = @_;
1748
1749 if ($rule_env eq 'host') {
1750 return {
1751 check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1752 };
1753 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1754 return {
1755 check => ['perm', '/', [ 'Sys.Modify' ]],
1756 };
3b4882dc 1757 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1758 return {
1759 check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1760 }
1761 }
1762
1763 return undef;
1764}
1765
1766sub rules_audit_permissions {
1767 my ($rule_env) = @_;
1768
1769 if ($rule_env eq 'host') {
1770 return {
1771 check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1772 };
1773 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1774 return {
1775 check => ['perm', '/', [ 'Sys.Audit' ]],
1776 };
3b4882dc 1777 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
9f6845cf
DM		 1778 return {
1779 check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1780 }
1781 }
1782
1783 return undef;
1784}
1785
9c7e0858 1786# core functions
780bcc0f
DM		 1787my $bridge_firewall_enabled = 0;
1788
1789sub enable_bridge_firewall {
1790
1791 return if $bridge_firewall_enabled; # only once
1792
5f0a912c
DM		 1793 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1794 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1795
6a8a75db
DM		 1796 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1797 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1798
780bcc0f
DM		 1799 $bridge_firewall_enabled = 1;
1800}
1801
b16e818e 1802sub iptables_restore_cmdlist {
64e0adf4 1803 my ($cmdlist, $table) = @_;
3a616aa0 1804
64e0adf4
AD		 1805 $table = 'filter' if !$table;
1806 run_command(['iptables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
3a616aa0
AD		 1807}
1808
17da5c0f 1809sub ip6tables_restore_cmdlist {
64e0adf4 1810 my ($cmdlist, $table) = @_;
17da5c0f 1811
64e0adf4
AD		 1812 $table = 'filter' if !$table;
1813 run_command(['ip6tables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
17da5c0f
AD		 1814}
1815
34cdedfa
AD		 1816sub ipset_restore_cmdlist {
1817 my ($cmdlist) = @_;
1818
bb6ebf3b 1819 run_command(['ipset', 'restore'], input => $cmdlist, errmsg => "ipset_restore_cmdlist");
34cdedfa
AD		 1820}
1821
151c209e
AD		 1822sub ebtables_restore_cmdlist {
1823 my ($cmdlist) = @_;
1824
c1031ab1 1825 run_command(['ebtables-restore'], input => $cmdlist, errmsg => "ebtables_restore_cmdlist");
151c209e
AD		 1826}
1827
de2a57cd 1828sub iptables_get_chains {
64e0adf4 1829 my ($iptablescmd, $t) = @_;
17da5c0f
AD		 1830
1831 $iptablescmd = "iptables" if !$iptablescmd;
64e0adf4 1832 $t = 'filter' if !$t;
de2a57cd
DM		 1833
1834 my $res = {};
1835
1836 # check what chains we want to track
1837 my $is_pvefw_chain = sub {
1838 my $name = shift;
1839
dec84fcd
DM		 1840 return 1 if $name =~ m/^PVEFW-\S+$/;
1841
a3ded5cd 1842 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
954f24b1 1843
a3ded5cd 1844 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
954f24b1 1845
a3ded5cd 1846 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
a89dfcc6 1847 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
de2a57cd
DM		 1848
1849 return undef;
1850 };
1851
1852 my $table = '';
1853
c4a2e5ae
DM		 1854 my $hooks = {};
1855
de2a57cd
DM		 1856 my $parser = sub {
1857 my $line = shift;
1858
1859 return if $line =~ m/^#/;
1860 return if $line =~ m/^\s*$/;
1861
1862 if ($line =~ m/^\*(\S+)$/) {
1863 $table = $1;
1864 return;
1865 }
1866
64e0adf4 1867 return if $table ne $t;
de2a57cd
DM		 1868
1869 if ($line =~ m/^:(\S+)\s/) {
1870 my $chain = $1;
1871 return if !&$is_pvefw_chain($chain);
3fa83edf 1872 $res->{$chain} = "unknown";
09d5f68e 1873 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1874 my ($chain, $sig) = ($1, $2);
de2a57cd 1875 return if !&$is_pvefw_chain($chain);
3fa83edf 1876 $res->{$chain} = $sig;
64e0adf4 1877 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD|PREROUTING)\s+-j\s+PVEFW-\1$/) {
c4a2e5ae 1878 $hooks->{$1} = 1;
de2a57cd
DM		 1879 } else {
1880 # simply ignore the rest
1881 return;
1882 }
1883 };
1884
c1031ab1 1885 run_command(["$iptablescmd-save"], outfunc => $parser);
de2a57cd 1886
c4a2e5ae 1887 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1888}
1889
9bf7d929
DM		 1890sub iptables_chain_digest {
1891 my ($rules) = @_;
1892 my $digest = Digest::SHA->new('sha1');
1893 foreach my $rule (@$rules) { # order is important
1894 $digest->add($rule);
1895 }
1896 return $digest->b64digest;
1897}
1898
3f95d14a
DM		 1899sub ipset_chain_digest {
1900 my ($rules) = @_;
4bd0a9c4 1901
3f95d14a
DM		 1902 my $digest = Digest::SHA->new('sha1');
1903 foreach my $rule (sort @$rules) { # note: sorted
1904 $digest->add($rule);
1905 }
1906 return $digest->b64digest;
1907}
1908
34cdedfa
AD		 1909sub ipset_get_chains {
1910
1911 my $res = {};
1912 my $chains = {};
1913
1914 my $parser = sub {
1915 my $line = shift;
1916
1917 return if $line =~ m/^#/;
1918 return if $line =~ m/^\s*$/;
4b96e877 1919 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1920 my $chain = $1;
1921 $line =~ s/\s+$//; # delete trailing white space
1922 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1923 } else {
1924 # simply ignore the rest
1925 return;
1926 }
1927 };
1928
c1031ab1 1929 run_command(['ipset', 'save'], outfunc => $parser);
34cdedfa 1930
3f95d14a
DM		 1931 # compute digest for each chain
1932 foreach my $chain (keys %$chains) {
1933 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1934 }
1935
1936 return $res;
1937}
1938
151c209e
AD		 1939sub ebtables_get_chains {
1940
1941 my $res = {};
1942 my $chains = {};
151c209e
AD		 1943 my $parser = sub {
1944 my $line = shift;
1945 return if $line =~ m/^#/;
1946 return if $line =~ m/^\s*$/;
fc1f1de9
WB		 1947 if ($line =~ m/^:(\S+)\s\S+$/) {
1948 # Make sure we know chains exist even if they're empty.
1949 $chains->{$1} //= [];
84025e99 1950 } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) {
151c209e
AD		 1951 my $chain = $1;
1952 $line =~ s/\s+$//;
1953 push @{$chains->{$chain}}, $line;
1954 } else {
1955 # simply ignore the rest
1956 return;
1957 }
1958 };
1959
c1031ab1 1960 run_command(['ebtables-save'], outfunc => $parser);
84025e99 1961 # compute digest for each chain and store rules as well
151c209e 1962 foreach my $chain (keys %$chains) {
84025e99
SI		 1963 $res->{$chain}->{rules} = $chains->{$chain};
1964 $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain});
151c209e
AD		 1965 }
1966 return $res;
1967}
1968
180da76c
TW		 1969# substitude action of rule according to action hash
1970sub rule_substitude_action {
1971 my ($rule, $actions) = @_;
1972
1973 if (my $action = $rule->{action}) {
1974 $rule->{action} = $actions->{$action} if defined($actions->{$action});
1975 }
1976}
1977
a44cb745
TW		 1978# generate a src or dst match
1979# $dir(ection) is either d or s
1980sub ipt_gen_src_or_dst_match {
1981 my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_;
1982
1983 my $srcdst;
1984 if ($dir eq 's') {
1985 $srcdst = "src";
1986 } elsif ($dir eq 'd') {
1987 $srcdst = "dst";
1988 } else {
1989 die "ipt_gen_src_or_dst_match: invalid direction $dir \n";
1990 }
1991
1992 my $match;
1993 if ($adr =~ m/^\+/) {
1994 if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
1995 my $name = $1;
1996 my $ipset_chain;
1997 if ($fw_conf && $fw_conf->{ipset}->{$name}) {
1998 $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
1999 } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
2000 $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
2001 } else {
2002 die "no such ipset '$name'\n";
2003 }
2004 $match = "-m set --match-set ${ipset_chain} ${srcdst}";
2005 } else {
2006 die "invalid security group name '$adr'\n";
2007 }
2008 } elsif ($adr =~ m/^${ip_alias_pattern}$/){
2009 my $alias = lc($adr);
2010 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
2011 $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
2012 die "no such alias '$adr'\n" if !$e;
2013 $match = "-${dir} $e->{cidr}";
2014 } elsif ($adr =~ m/\-/){
2015 $match = "-m iprange --${srcdst}-range $adr";
2016 } else {
2017 $match = "-${dir} $adr";
2018 }
2019
2020 return $match;
2021}
2022
30c390f9
TW		 2023# convert a %rule to an array of iptables commands
2024sub ipt_rule_to_cmds {
2025 my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_;
2026
2027 die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen
2028
2029 my @match = ();
2030
2031 if (defined $rule->{match}) {
2032 push @match, $rule->{match};
2033 } else {
2034 push @match, "-i $rule->{iface_in}" if $rule->{iface_in};
2035 push @match, "-o $rule->{iface_out}" if $rule->{iface_out};
2036
2037 if ($rule->{source}) {
2038 push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf);
2039 }
2040 if ($rule->{dest}) {
2041 push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf);
2042 }
2043
2044 if (my $proto = $rule->{proto}) {
2045 push @match, "-p $proto";
2046
f776d6de
WB		 2047 my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1);
2048 my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0);
30c390f9 2049
f776d6de 2050 my $add_dport = sub {
88614d72 2051 return if !defined($rule->{dport});
3dffed4c 2052
0588bf2a 2053 # NOTE: we re-use dport to store --icmp-type for icmp* protocol
30c390f9 2054 if ($proto eq 'icmp') {
0588bf2a 2055 $is_valid_icmp_type->($rule->{dport}, $icmp_type_names);
30c390f9
TW		 2056 push @match, "-m icmp --icmp-type $rule->{dport}";
2057 } elsif ($proto eq 'icmpv6') {
0588bf2a 2058 $is_valid_icmp_type->($rule->{dport}, $icmpv6_type_names);
30c390f9
TW		 2059 push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
2060 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
2061 die "protocol $proto does not have ports\n";
f776d6de
WB		 2062 } elsif ($multidport) {
2063 push @match, "--match multiport", "--dports $rule->{dport}";
30c390f9 2064 } else {
88614d72 2065 return if !$rule->{dport};
f776d6de 2066 push @match, "--dport $rule->{dport}";
30c390f9 2067 }
f776d6de 2068 };
30c390f9 2069
f776d6de
WB		 2070 my $add_sport = sub {
2071 return if !$rule->{sport};
3dffed4c 2072
30c390f9
TW		 2073 die "protocol $proto does not have ports\n"
2074 if !$PROTOCOLS_WITH_PORTS->{$proto};
f776d6de
WB		 2075 if ($multisport) {
2076 push @match, "--match multiport", "--sports $rule->{sport}";
30c390f9
TW		 2077 } else {
2078 push @match, "--sport $rule->{sport}";
2079 }
f776d6de
WB		 2080 };
2081
3dffed4c 2082 # order matters - single port before multiport!
f776d6de
WB		 2083 $add_dport->() if $multisport;
2084 $add_sport->();
2085 $add_dport->() if !$multisport;
30c390f9
TW		 2086 } elsif ($rule->{dport} || $rule->{sport}) {
2087 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport};
2088 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport};
2089 }
2090
2091 push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
2092 }
2093 my $matchstr = scalar(@match) ? join(' ', @match) : "";
2094
2095 my $targetstr;
2096 if (defined $rule->{target}) {
2097 $targetstr = $rule->{target};
2098 } else {
2099 my $action = (defined $rule->{action}) ? $rule->{action} : "";
2100 my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
2101 $targetstr = ($goto) ? "-g $action" : "-j $action";
2102 }
2103
2104 my @iptcmds;
2db2b6aa
TL		 2105 my $log = $rule->{log};
2106 if (defined($log) && $log ne 'nolog') {
3489f8a2
CE		 2107 my $loglevel = $log_level_hash->{$log};
2108 my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel);
30c390f9
TW		 2109 push @iptcmds, "-A $chain $matchstr $logaction";
2110 }
2111 push @iptcmds, "-A $chain $matchstr $targetstr";
2112 return @iptcmds;
2113}
2114
eba0fb64 2115sub ruleset_generate_rule {
3489f8a2 2116 my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_;
eba0fb64 2117
e5076eee
DM		 2118 my $rules;
2119
2120 if ($rule->{macro}) {
35d1d6da 2121 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
e5076eee
DM		 2122 } else {
2123 $rules = [ $rule ];
2124 }
2125
30c390f9
TW		 2126 # update all or nothing
2127 my @ipt_rule_cmds;
2128 foreach my $r (@$rules) {
3489f8a2 2129 push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid);
30c390f9
TW		 2130 }
2131 foreach my $c (@ipt_rule_cmds) {
2132 ruleset_add_ipt_cmd($ruleset, $chain, $c);
2133 }
2134}
2135
3fa83edf
DM		 2136sub ruleset_create_chain {
2137 my ($ruleset, $chain) = @_;
3a616aa0 2138
d050c724 2139 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 2140 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 2141
3fa83edf
DM		 2142 die "chain '$chain' already exists\n" if $ruleset->{$chain};
2143
2144 $ruleset->{$chain} = [];
3a616aa0
AD		 2145}
2146
3fa83edf
DM		 2147sub ruleset_chain_exist {
2148 my ($ruleset, $chain) = @_;
3a616aa0 2149
3fa83edf
DM		 2150 return $ruleset->{$chain} ? 1 : undef;
2151}
3a616aa0 2152
30c390f9
TW		 2153# add an iptables command (like generated by ipt_rule_to_cmds) to a chain
2154sub ruleset_add_ipt_cmd {
2155 my ($ruleset, $chain, $iptcmd) = @_;
2156
2157 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2158
2159 push @{$ruleset->{$chain}}, $iptcmd;
2160}
2161
1e9c5070 2162sub ruleset_addrule {
3489f8a2 2163 my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
1e9c5070 2164
3489f8a2 2165 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1e9c5070 2166
3489f8a2
CE		 2167 if ($log) {
2168 my $loglevel = $log_level_hash->{$log};
2169 my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel);
7f7930f8 2170 push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
3489f8a2
CE		 2171 }
2172 # for stable ebtables digests avoid double-spaces to match ebtables-save output
2173 $match .= ' ' if length($match);
2174 push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
1e9c5070
TW		 2175}
2176
3fa83edf 2177sub ruleset_insertrule {
1e9c5070 2178 my ($ruleset, $chain, $match, $action, $log) = @_;
3a616aa0 2179
3fa83edf 2180 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 2181
1e9c5070 2182 unshift @{$ruleset->{$chain}}, "-A $chain $match $action";
3fa83edf 2183}
3a616aa0 2184
782c4cde
DM		 2185sub get_log_rule_base {
2186 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 2187
782c4cde 2188 $vmid = 0 if !defined($vmid);
7f7930f8 2189 $msg = "" if !defined($msg);
782c4cde 2190
cc37e000
TL		 2191 my $rlimit = '';
2192 if (defined($global_log_ratelimit)) {
2193 $rlimit = "-m limit $global_log_ratelimit ";
2194 }
2195
cbb5d6f3 2196 # Note: we use special format for prefix to pass further
7f7930f8 2197 # info to log daemon (VMID, LOGLEVEL and CHAIN)
cc37e000 2198 return "${rlimit}-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
782c4cde
DM		 2199}
2200
ead850e8 2201sub ruleset_add_chain_policy {
88c26d5e 2202 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 2203
2204 if ($policy eq 'ACCEPT') {
2205
180da76c
TW		 2206 my $rule = { action => 'ACCEPT' };
2207 rule_substitude_action($rule, { ACCEPT => $accept_action});
2208 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
ead850e8
DM		 2209
2210 } elsif ($policy eq 'DROP') {
2211
1e9c5070 2212 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop");
ead850e8 2213
7f7930f8 2214 ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid);
ead850e8 2215 } elsif ($policy eq 'REJECT') {
1e9c5070 2216 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject");
ead850e8 2217
d8d4dd67 2218 ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid);
ead850e8
DM		 2219 } else {
2220 # should not happen
2221 die "internal error: unknown policy '$policy'";
2222 }
2223}
2224
a83abe93 2225sub ruleset_chain_add_ndp {
e8415920 2226 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
a83abe93
WB		 2227 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
2228
1e9c5070 2229 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept);
d7aa51ac 2230 if ($direction ne 'OUT' || $options->{radv}) {
1e9c5070 2231 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept);
d7aa51ac 2232 }
1e9c5070
TW		 2233 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept);
2234 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept);
a83abe93
WB		 2235}
2236
e2943485 2237sub ruleset_chain_add_conn_filters {
27c49e25 2238 my ($ruleset, $chain, $allow_invalid, $accept) = @_;
e2943485 2239
27c49e25
CE		 2240 if (!$allow_invalid) {
2241 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
2242 }
1e9c5070 2243 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept");
e2943485
DM		 2244}
2245
2246sub ruleset_chain_add_input_filters {
88c26d5e 2247 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2428e394
AD		 2248
2249 if ($cluster_conf->{ipset}->{blacklist}){
b5831a0d
AD		 2250 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
2251 ruleset_create_chain($ruleset, "PVEFW-blacklist");
3489f8a2 2252 ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0);
b5831a0d 2253 }
88c26d5e 2254 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1e9c5070 2255 ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist");
2428e394 2256 }
e2943485
DM		 2257
2258 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
5b5c42b1 2259 if ($ipversion == 4) {
1e9c5070 2260 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs");
5b5c42b1 2261 }
e2943485
DM		 2262 }
2263
2264 if ($options->{tcpflags}) {
1e9c5070 2265 ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags");
e2943485
DM		 2266 }
2267}
2268
9e15114a 2269sub ruleset_create_vm_chain {
88c26d5e 2270 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
3a616aa0 2271
9e15114a 2272 ruleset_create_chain($ruleset, $chain);
b47ecc88 2273 my $accept = generate_nfqueue($options);
3a616aa0 2274
ce15d90b 2275 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
dcafc5fb
WB		 2276 if ($ipversion == 4) {
2277 if ($direction eq 'OUT') {
75a12a9d 2278 ruleset_generate_rule($ruleset, $chain, $ipversion,
dcafc5fb
WB		 2279 { action => 'PVEFW-SET-ACCEPT-MARK',
2280 proto => 'udp', sport => 68, dport => 67 });
2281 } else {
2282 ruleset_generate_rule($ruleset, $chain, $ipversion,
2283 { action => 'ACCEPT',
2284 proto => 'udp', sport => 67, dport => 68 });
2285 }
2286 } elsif ($ipversion == 6) {
2287 if ($direction eq 'OUT') {
2288 ruleset_generate_rule($ruleset, $chain, $ipversion,
2289 { action => 'PVEFW-SET-ACCEPT-MARK',
2290 proto => 'udp', sport => 546, dport => 547 });
2291 } else {
2292 ruleset_generate_rule($ruleset, $chain, $ipversion,
2293 { action => 'ACCEPT',
2294 proto => 'udp', sport => 547, dport => 546 });
2295 }
76a2d1e7 2296 }
dcafc5fb 2297
ce15d90b
DM		 2298 }
2299
b21aca2c
DM		 2300 if ($direction eq 'OUT') {
2301 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1e9c5070 2302 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP");
b21aca2c 2303 }
d7aa51ac 2304 if ($ipversion == 6 && !$options->{radv}) {
1e9c5070 2305 ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP");
d7aa51ac 2306 }
808d711d 2307 if ($ipfilter_ipset) {
1e9c5070 2308 ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP");
808d711d 2309 }
1e9c5070 2310 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
c29f55c9 2311 }
e8415920
WB		 2312
2313 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept";
2314 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
9e15114a
DM		 2315}
2316
4bc6b5ac 2317sub ruleset_add_group_rule {
aedde2c2 2318 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
4bc6b5ac
DM		 2319
2320 my $group = $rule->{action};
2321 my $group_chain = "GROUP-$group-$direction";
2322 if(!ruleset_chain_exist($ruleset, $group_chain)){
aedde2c2 2323 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
4bc6b5ac 2324 }
bfc488f6 2325
f8b12fff 2326 if ($direction eq 'OUT' && $rule->{iface_out}) {
1e9c5070 2327 ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain");
f8b12fff 2328 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1e9c5070 2329 ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain");
4bc6b5ac 2330 } else {
1e9c5070 2331 ruleset_addrule($ruleset, $chain, "", "-j $group_chain");
4bc6b5ac
DM		 2332 }
2333
1e9c5070 2334 ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action");
4bc6b5ac
DM		 2335}
2336
9e15114a 2337sub ruleset_generate_vm_rules {
3489f8a2 2338 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_;
9e15114a
DM		 2339
2340 my $lc_direction = lc($direction);
c29f55c9 2341
6b8ca015
DM		 2342 my $in_accept = generate_nfqueue($options);
2343
92e976b3
DM		 2344 foreach my $rule (@$rules) {
2345 next if $rule->{iface} && $rule->{iface} ne $netid;
b7ab6989 2346 next if !$rule->{enable} || $rule->{errors};
006490cb 2347 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
84870b1a 2348
92e976b3 2349 if ($rule->{type} eq 'group') {
4bc6b5ac 2350 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
aedde2c2 2351 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
92e976b3
DM		 2352 } else {
2353 next if $rule->{type} ne $lc_direction;
921dfb33 2354 eval {
3489f8a2 2355 $rule->{logmsg} = "$rule->{action}: ";
921dfb33 2356 if ($direction eq 'OUT') {
180da76c 2357 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
3489f8a2 2358 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33 2359 } else {
180da76c 2360 rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" });
3489f8a2 2361 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
921dfb33
DM		 2362 }
2363 };
2364 warn $@ if $@;
4e6112f9 2365 }
3a616aa0 2366 }
9e15114a
DM		 2367}
2368
b47ecc88
AD		 2369sub generate_nfqueue {
2370 my ($options) = @_;
2371
73089769
DM		 2372 if ($options->{ips}) {
2373 my $action = "NFQUEUE";
2374 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2375 if (defined($3) && defined($1)) {
b47ecc88 2376 $action .= " --queue-balance $1:$3";
73089769 2377 } elsif (defined($1)) {
b47ecc88
AD		 2378 $action .= " --queue-num $1";
2379 }
2380 }
8dc92812 2381 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 2382 return $action;
2383 } else {
2384 return "ACCEPT";
b47ecc88 2385 }
b47ecc88
AD		 2386}
2387
da6fc60b 2388sub ruleset_generate_vm_ipsrules {
a01c32c7 2389 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 2390
2391 if ($options->{ips} && $direction eq 'IN') {
2392 my $nfqueue = generate_nfqueue($options);
2393
a01c32c7 2394 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 2395 ruleset_create_chain($ruleset, "PVEFW-IPS");
2396 }
2397
1e9c5070 2398 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue");
da6fc60b
AD		 2399 }
2400}
2401
9e15114a 2402sub generate_tap_rules_direction {
84870b1a 2403 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
9e15114a
DM		 2404
2405 my $lc_direction = lc($direction);
2406
2407 my $rules = $vmfw_conf->{rules};
2408
2409 my $options = $vmfw_conf->{options};
2410 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
2411
2412 my $tapchain = "$iface-$direction";
2413
b692f42c 2414 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
88c26d5e 2415 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
74601077 2416 if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
808d711d 2417
a34cfdd0 2418 if ($options->{enable}) {
033a15b3
ML		 2419 # create chain with mac and ip filter
2420 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
2421
3489f8a2 2422 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
3a616aa0 2423
a34cfdd0 2424 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 2425
a34cfdd0
DM		 2426 # implement policy
2427 my $policy;
ccae0b50 2428
a34cfdd0
DM		 2429 if ($direction eq 'OUT') {
2430 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2431 } else {
76448f08 2432 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
a34cfdd0 2433 }
ccae0b50 2434
a34cfdd0
DM		 2435 my $accept = generate_nfqueue($options);
2436 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
88c26d5e 2437 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
a34cfdd0
DM		 2438 } else {
2439 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
88c26d5e 2440 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
a34cfdd0 2441 }
3a616aa0 2442
3fa83edf 2443 # plug the tap chain to bridge chain
3cc81077 2444 if ($direction eq 'IN') {
a01c32c7 2445 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
8f3aa9cc 2446 "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain");
3cc81077 2447 } else {
a01c32c7 2448 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
8f3aa9cc 2449 "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain");
3cc81077 2450 }
3a616aa0
AD		 2451}
2452
d18c1e2b 2453sub enable_host_firewall {
06208a01 2454 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf) = @_;
0bd5f137 2455
92e976b3 2456 my $options = $hostfw_conf->{options};
63324b09 2457 my $cluster_options = $cluster_conf->{options};
92e976b3 2458 my $rules = $hostfw_conf->{rules};
35f0c37e 2459 my $cluster_rules = $cluster_conf->{rules};
178a63be 2460
06208a01
SR		 2461 # corosync preparation
2462 my $corosync_rule = "-p udp --dport 5404:5405";
2463 my $corosync_local_addresses = {};
eacd4748 2464 my $multicast_enabled;
06208a01
SR		 2465 my $local_hostname = PVE::INotify::nodename();
2466 if (defined($corosync_conf)) {
2467 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2468 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
2469
2470 if ($node_name eq $local_hostname) {
2471 $corosync_local_addresses->{$key} = $node_ip;
2472 }
2473 });
eacd4748
SR		 2474
2475 # allow multicast only if enabled in config
81a0a9ff
FG		 2476 my $corosync_transport = $corosync_conf->{main}->{totem}->{transport};
2477 $multicast_enabled = defined($corosync_transport) && $corosync_transport eq 'udp';
06208a01
SR		 2478 }
2479
3fa83edf 2480 # host inbound firewall
dec84fcd
DM		 2481 my $chain = "PVEFW-HOST-IN";
2482 ruleset_create_chain($ruleset, $chain);
0bd5f137 2483
178a63be
DM		 2484 my $loglevel = get_option_log_level($options, "log_level_in");
2485
1e9c5070 2486 ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT");
4ac863a6 2487
27c49e25 2488 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e8415920 2489 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
88c26d5e 2490 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
fb424a00 2491
23e888f8
DM		 2492 # we use RETURN because we need to check also tap rules
2493 my $accept_action = 'RETURN';
2494
1e9c5070 2495 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2496
35f0c37e
DM		 2497 # add host rules first, so that cluster wide rules can be overwritten
2498 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2499 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2500 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
bfc488f6 2501
f8b12fff 2502 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
5383df39 2503
1a9978ed 2504 eval {
4fed896b 2505 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2506 if ($rule->{type} eq 'group') {
aedde2c2 2507 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
1a9978ed 2508 } elsif ($rule->{type} eq 'in') {
180da76c 2509 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2510 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2511 }
2512 };
2513 warn $@ if $@;
f8b12fff 2514 delete $rule->{iface_in};
0bd5f137 2515 }
eb399cef
DM		 2516
2517 # allow standard traffic for management ipset (includes cluster network)
88c26d5e 2518 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
708ba714 2519 my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
1e9c5070
TW		 2520 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API
2521 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2522 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
2523 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH
94e4ec75 2524 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 60000:60050", "-j $accept_action"); # Migration
bfc488f6 2525
06208a01
SR		 2526 # corosync inbound rules
2527 if (defined($corosync_conf)) {
eacd4748
SR		 2528 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2529 if $multicast_enabled;
3bc79f87 2530
06208a01
SR		 2531 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2532 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2533 my $destination = $corosync_local_addresses->{$key};
06208a01 2534
a9c463ce 2535 if ($node_name ne $local_hostname && defined($destination)) {
06208a01 2536 # accept only traffic on same ring
a9c463ce 2537 ruleset_addrule($ruleset, $chain, "-d $destination -s $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR		 2538 }
2539 });
3bc79f87 2540 }
0bd5f137 2541
23e888f8 2542 # implement input policy
63324b09 2543 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
88c26d5e 2544 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
0bd5f137 2545
3fa83edf 2546 # host outbound firewall
aadd745e 2547 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 2548 ruleset_create_chain($ruleset, $chain);
2549
178a63be
DM		 2550 $loglevel = get_option_log_level($options, "log_level_out");
2551
1e9c5070 2552 ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT");
e2943485 2553
27c49e25 2554 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
e2943485 2555
23e888f8
DM		 2556 # we use RETURN because we may want to check other thigs later
2557 $accept_action = 'RETURN';
e8415920 2558 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action");
23e888f8 2559
1e9c5070 2560 ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast
cc8dc02f 2561
35f0c37e
DM		 2562 # add host rules first, so that cluster wide rules can be overwritten
2563 foreach my $rule (@$rules, @$cluster_rules) {
5383df39 2564 next if !$rule->{enable} || $rule->{errors};
35d1d6da 2565 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
5383df39 2566
f8b12fff 2567 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
1a9978ed 2568 eval {
3489f8a2 2569 $rule->{logmsg} = "$rule->{action}: ";
1a9978ed 2570 if ($rule->{type} eq 'group') {
aedde2c2 2571 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
1a9978ed 2572 } elsif ($rule->{type} eq 'out') {
180da76c 2573 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
3489f8a2 2574 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
1a9978ed
DM		 2575 }
2576 };
2577 warn $@ if $@;
f8b12fff 2578 delete $rule->{iface_out};
0bd5f137
AD		 2579 }
2580
3bc79f87 2581 # allow standard traffic on cluster network
06208a01
SR		 2582 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2583 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
2584
35d1d6da 2585 if ($localnet && ($ipversion == $localnet_ver)) {
1e9c5070
TW		 2586 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API
2587 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH
2588 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
2589 ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
06208a01 2590 }
bfc488f6 2591
06208a01
SR		 2592 # corosync outbound rules
2593 if (defined($corosync_conf)) {
eacd4748
SR		 2594 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
2595 if $multicast_enabled;
06208a01
SR		 2596
2597 PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
2598 my ($node_name, $node_ip, $node_ipversion, $key) = @_;
a9c463ce 2599 my $source = $corosync_local_addresses->{$key};
06208a01 2600
a9c463ce 2601 if ($node_name ne $local_hostname && defined($source)) {
06208a01 2602 # accept only traffic on same ring
a9c463ce 2603 ruleset_addrule($ruleset, $chain, "-s $source -d $node_ip $corosync_rule", "-j $accept_action");
06208a01
SR		 2604 }
2605 });
3bc79f87
DM		 2606 }
2607
23e888f8 2608 # implement output policy
63324b09 2609 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
88c26d5e 2610 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
6158271d 2611
1e9c5070
TW		 2612 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT");
2613 ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN");
9d31b418
AD		 2614}
2615
2616sub generate_group_rules {
aedde2c2 2617 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
9d31b418 2618
c6f5cc88 2619 my $rules = $cluster_conf->{groups}->{$group};
6158271d 2620
b4deedab
DM		 2621 if (!$rules) {
2622 warn "no such security group '$group'\n";
2623 $rules = []; # create empty chain
2624 }
2625
3fa83edf 2626 my $chain = "GROUP-${group}-IN";
9d31b418 2627
3fa83edf 2628 ruleset_create_chain($ruleset, $chain);
1e9c5070 2629 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2630
92e976b3
DM		 2631 foreach my $rule (@$rules) {
2632 next if $rule->{type} ne 'in';
7a5a402b 2633 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2634 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
180da76c 2635 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
2dc0a26e 2636 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418
AD		 2637 }
2638
3fa83edf 2639 $chain = "GROUP-${group}-OUT";
9d31b418 2640
3fa83edf 2641 ruleset_create_chain($ruleset, $chain);
1e9c5070 2642 ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark
9d31b418 2643
92e976b3
DM		 2644 foreach my $rule (@$rules) {
2645 next if $rule->{type} ne 'out';
7a5a402b 2646 next if !$rule->{enable} || $rule->{errors};
aedde2c2 2647 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
92e976b3
DM		 2648 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2649 # check also other tap rules later
180da76c 2650 rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" });
2dc0a26e 2651 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
9d31b418 2652 }
9d31b418
AD		 2653}
2654
51bae274
DM		 2655my $MAX_NETS = 32;
2656my $valid_netdev_names = {};
2657for (my $i = 0; $i < $MAX_NETS; $i++) {
2658 $valid_netdev_names->{"net$i"} = 1;
2659}
5e1267a5 2660
fe3d79b4
WB		 2661sub get_mark_values {
2662 my ($value, $mask) = @_;
2663 $value = hex($value) if $value =~ /^0x/;
2664 $mask = hex($mask) if defined($mask) && $mask =~ /^0x/;
2665 $mask = 0xffffffff if !defined($mask);
2666 return ($value, $mask);
2667}
2668
51bae274 2669sub parse_fw_rule {
40af93c4 2670 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env) = @_;
5e1267a5 2671
d4cda423
DM		 2672 my $orig_line = $line;
2673
6d9246e7
DM		 2674 my $rule = {};
2675
11bac5c2 2676 # we can add single line comments to the end of the rule
6d9246e7
DM		 2677 if ($line =~ s/#\s*(.*?)\s*$//) {
2678 $rule->{comment} = decode('utf8', $1);
2679 }
11bac5c2
DM		 2680
2681 # we can disable a rule when prefixed with '|'
ea9e5116 2682
6d9246e7 2683 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
51bae274 2684
dba740a9
DM		 2685 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2686 die "unable to parse rule: $line\n";
6d9246e7
DM		 2687
2688 $rule->{type} = lc($1);
2689 $rule->{action} = $2;
2690
2691 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2692 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2693 $rule->{macro} = $1;
2694 $rule->{action} = $2;
92e976b3 2695 }
51bae274
DM		 2696 }
2697
dba740a9
DM		 2698 while (length($line)) {
2699 if ($line =~ s/^-i (\S+)\s*//) {
6d9246e7 2700 $rule->{iface} = $1;
dba740a9
DM		 2701 next;
2702 }
51bae274 2703
6d9246e7 2704 last if $rule->{type} eq 'group';
51bae274 2705
dba740a9 2706 if ($line =~ s/^-p (\S+)\s*//) {
6d9246e7 2707 $rule->{proto} = $1;
dba740a9
DM		 2708 next;
2709 }
6d9246e7 2710
dba740a9 2711 if ($line =~ s/^-dport (\S+)\s*//) {
6d9246e7 2712 $rule->{dport} = $1;
dba740a9
DM		 2713 next;
2714 }
6d9246e7 2715
dba740a9 2716 if ($line =~ s/^-sport (\S+)\s*//) {
6d9246e7 2717 $rule->{sport} = $1;
dba740a9
DM		 2718 next;
2719 }
2720 if ($line =~ s/^-source (\S+)\s*//) {
6d9246e7 2721 $rule->{source} = $1;
dba740a9
DM		 2722 next;
2723 }
2724 if ($line =~ s/^-dest (\S+)\s*//) {
6d9246e7 2725 $rule->{dest} = $1;
dba740a9
DM		 2726 next;
2727 }
3489f8a2
CE		 2728 if ($line =~ s/^-log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) {
2729 $rule->{log} = $1;
2730 next;
2731 }
51bae274 2732
dba740a9
DM		 2733 last;
2734 }
ba791b1f 2735
dba740a9 2736 die "unable to parse rule parameters: $line\n" if length($line);
51bae274 2737
a523e057 2738 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
eedcb564
WB		 2739 if ($rule->{errors}) {
2740 # The verbose flag really means we're running from the CLI and want
2741 # output on the console - in the other case we really want such errors
2742 # to go into the syslog instead.
2743 my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) };
2744 $log->("$prefix - errors in rule parameters: $orig_line\n");
d4cda423 2745 foreach my $p (keys %{$rule->{errors}}) {
eedcb564 2746 $log->(" $p: $rule->{errors}->{$p}\n");
d4cda423
DM		 2747 }
2748 }
6d9246e7
DM		 2749
2750 return $rule;
51bae274
DM		 2751}
2752
c5e8b008
AD		 2753sub verify_ethertype {
2754 my ($value) = @_;
2755 my $types = get_etc_ethertypes();
2756 die "unknown ethernet protocol type: $value\n"
2757 if !defined($types->{byname}->{$value}) &&
2758 !defined($types->{byid}->{$value});
2759}
2760
2d404ffc 2761sub parse_vmfw_option {
85c6eaed
DM		 2762 my ($line) = @_;
2763
2764 my ($opt, $value);
2765
178a63be
DM		 2766 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2767
74601077 2768 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 2769 $opt = lc($1);
2770 $value = int($2);
178a63be
DM		 2771 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2772 $opt = lc($1);
2773 $value = $2 ? lc($3) : '';
72f63fde 2774 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 2775 $opt = lc($1);
2776 $value = uc($3);
b47ecc88
AD		 2777 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2778 $opt = lc($1);
2779 $value = $2;
c5e8b008
AD		 2780 } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) {
2781 $opt = lc($1);
2782 $value = $2;
2783 verify_ethertype($_) foreach split(/\s*,\s*/, $value);
9c6b6efd 2784 } else {
85c6eaed
DM		 2785 die "can't parse option '$line'\n"
2786 }
2787
2788 return ($opt, $value);
2789}
2790
2d404ffc
DM		 2791sub parse_hostfw_option {
2792 my ($line) = @_;
2793
2794 my ($opt, $value);
2795
2796 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2797
ac5dd88e 2798 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood):\s*(0|1)\s*$/i) {
2d404ffc
DM		 2799 $opt = lc($1);
2800 $value = int($2);
178a63be 2801 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 2802 $opt = lc($1);
2803 $value = $2 ? lc($3) : '';
ac5dd88e 2804 } elsif ($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		 2805 $opt = lc($1);
2806 $value = int($2);
2d404ffc 2807 } else {
2d404ffc
DM		 2808 die "can't parse option '$line'\n"
2809 }
2810
2811 return ($opt, $value);
2812}
2813
c6f5cc88
DM		 2814sub parse_clusterfw_option {
2815 my ($line) = @_;
2816
2817 my ($opt, $value);
2818
72d055fc 2819 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
c6f5cc88
DM		 2820 $opt = lc($1);
2821 $value = int($2);
72d055fc
AG		 2822 if (($value > 1) && ((time() - $value) > 60)) {
2823 $value = 0
2824 }
2549e7ef 2825 } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) {
84025e99
SI		 2826 $opt = lc($1);
2827 $value = int($2);
63324b09
DM		 2828 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2829 $opt = lc($1);
2830 $value = uc($3);
cc37e000
TL		 2831 } elsif ($line =~ m/^(log_ratelimit):\s*(\S+)\s*$/) {
2832 $opt = lc($1);
2833 $value = $2;
c6f5cc88 2834 } else {
c6f5cc88
DM		 2835 die "can't parse option '$line'\n"
2836 }
2837
2838 return ($opt, $value);
2839}
2840
6c221576
DM		 2841sub resolve_alias {
2842 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2843
6d959e3f 2844 my $alias = lc($cidr);
04f5088f 2845 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
6d959e3f 2846 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
6c221576 2847
6d959e3f
DM		 2848 die "no such alias '$cidr'\n" if !$e;;
2849
2850 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
6c221576
DM		 2851}
2852
ae029a88
DM		 2853sub parse_ip_or_cidr {
2854 my ($cidr) = @_;
2855
2856 my $ipversion;
75a12a9d 2857
ae029a88
DM		 2858 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2859 $cidr =~ s|/128$||;
2860 $ipversion = 6;
2861 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2862 $cidr =~ s|/32$||;
2863 $ipversion = 4;
2864 } else {
2865 die "value does not look like a valid IP address or CIDR network\n";
2866 }
2867
2868 return wantarray ? ($cidr, $ipversion) : $cidr;
2869}
2870
e76a9f53 2871sub parse_alias {
92e1209b
AD		 2872 my ($line) = @_;
2873
81d574a7
DM		 2874 # we can add single line comments to the end of the line
2875 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2876
92e1209b 2877 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7 2878 my ($name, $cidr) = ($1, $2);
ae029a88
DM		 2879 my $ipversion;
2880
2881 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2882
81d574a7
DM		 2883 my $data = {
2884 name => $name,
2885 cidr => $cidr,
70e524eb 2886 ipversion => $ipversion,
81d574a7
DM		 2887 };
2888 $data->{comment} = $comment if $comment;
2889 return $data;
92e1209b
AD		 2890 }
2891
81d574a7 2892 return undef;
92e1209b
AD		 2893}
2894
e5cd1ee0 2895sub generic_fw_config_parser {
585ede43
TL		 2896 my ($filename, $cluster_conf, $empty_conf, $rule_env) = @_;
2897
51bae274
DM		 2898 my $section;
2899 my $group;
2900
1210ae94 2901 my $res = $empty_conf;
6158271d 2902
0dbef530
TL		 2903 my $raw;
2904 if ($filename =~ m!^/etc/pve/(.*)$!) {
2905 $raw = PVE::Cluster::get_config($1);
2906 } else {
2907 $raw = eval { PVE::Tools::file_get_contents($filename) }; # ignore errors
2908 }
2909 return {} if !$raw;
2910
644b5fc9
FG		 2911 my $curr_group_keys = {};
2912
0dbef530
TL		 2913 my $linenr = 0;
2914 while ($raw =~ /^\h*(.*?)\h*$/gm) {
2915 my $line = $1;
2916 $linenr++;
51bae274
DM		 2917 next if $line =~ m/^#/;
2918 next if $line =~ m/^\s*$/;
c8c534f7
DM		 2919 chomp $line;
2920
961b4928
DM		 2921 my $prefix = "$filename (line $linenr)";
2922
1210ae94 2923 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
c6f5cc88
DM		 2924 $section = 'options';
2925 next;
2926 }
2927
1210ae94 2928 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
92e1209b
AD		 2929 $section = 'aliases';
2930 next;
2931 }
2932
1210ae94 2933 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
c6f5cc88 2934 $section = 'groups';
92e976b3 2935 $group = lc($1);
0d22acb3 2936 my $comment = $2;
351052d1
DM		 2937 eval {
2938 die "security group name too long\n" if length($group) > $max_group_name_length;
2939 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2940 };
2941 if (my $err = $@) {
2942 ($section, $group, $comment) = undef;
2943 warn "$prefix: $err";
2944 next;
2945 }
75a12a9d 2946
c85c87f9 2947 $res->{$section}->{$group} = [];
649e4d57
DM		 2948 $res->{group_comments}->{$group} = decode('utf8', $comment)
2949 if $comment;
51bae274
DM		 2950 next;
2951 }
34cdedfa 2952
1210ae94 2953 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
c6f5cc88
DM		 2954 $section = 'rules';
2955 next;
2956 }
cbb5d6f3 2957
1210ae94 2958 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
34cdedfa
AD		 2959 $section = 'ipset';
2960 $group = lc($1);
d72c631c 2961 my $comment = $2;
75a12a9d 2962 eval {
351052d1
DM		 2963 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2964 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2965 };
2966 if (my $err = $@) {
2967 ($section, $group, $comment) = undef;
2968 warn "$prefix: $err";
2969 next;
2970 }
2971
c85c87f9 2972 $res->{$section}->{$group} = [];
644b5fc9
FG		 2973 $curr_group_keys = {};
2974
e34d0e58 2975 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2976 if $comment;
34cdedfa
AD		 2977 next;
2978 }
2979
c6f5cc88 2980 if (!$section) {
cbb5d6f3 2981 warn "$prefix: skip line - no section\n";
51bae274
DM		 2982 next;
2983 }
2984
c6f5cc88
DM		 2985 if ($section eq 'options') {
2986 eval {
1210ae94
DM		 2987 my ($opt, $value);
2988 if ($rule_env eq 'cluster') {
2989 ($opt, $value) = parse_clusterfw_option($line);
2990 } elsif ($rule_env eq 'host') {
2991 ($opt, $value) = parse_hostfw_option($line);
2992 } else {
2993 ($opt, $value) = parse_vmfw_option($line);
2994 }
c6f5cc88
DM		 2995 $res->{options}->{$opt} = $value;
2996 };
2997 warn "$prefix: $@" if $@;
92e1209b
AD		 2998 } elsif ($section eq 'aliases') {
2999 eval {
e76a9f53 3000 my $data = parse_alias($line);
81d574a7 3001 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 3002 };
3003 warn "$prefix: $@" if $@;
c6f5cc88
DM		 3004 } elsif ($section eq 'rules') {
3005 my $rule;
40af93c4 3006 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env); };
c6f5cc88
DM		 3007 if (my $err = $@) {
3008 warn "$prefix: $err";
3009 next;
3010 }
3011 push @{$res->{$section}}, $rule;
3012 } elsif ($section eq 'groups') {
34cdedfa 3013 my $rule;
40af93c4 3014 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group'); };
34cdedfa
AD		 3015 if (my $err = $@) {
3016 warn "$prefix: $err";
3017 next;
3018 }
3f95d14a 3019 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 3020 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 3021 # we can add single line comments to the end of the rule
3022 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
3023
30f1b100 3024 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 3025 my $nomatch = $1;
9d6f90e6 3026 my $cidr = $2;
d46b1ef6
DM		 3027 my $errors;
3028
3029 if ($nomatch && !$feature_ipset_nomatch) {
3030 $errors->{nomatch} = "nomatch not supported by kernel";
3031 }
2a052ee3 3032
75a12a9d 3033 eval {
4803b296
DM		 3034 if ($cidr =~ m/^${ip_alias_pattern}$/) {
3035 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
3036 } else {
ae029a88 3037 $cidr = parse_ip_or_cidr($cidr);
92e1209b 3038 }
644b5fc9
FG		 3039 die "duplicate ipset entry for '$cidr'\n"
3040 if defined($curr_group_keys->{$cidr});
4803b296
DM		 3041 };
3042 if (my $err = $@) {
c8c534f7 3043 chomp $err;
d46b1ef6 3044 $errors->{cidr} = $err;
2a052ee3 3045 }
2a052ee3 3046
b14db52f
WB		 3047 if ($cidr =~ m!/0+$!) {
3048 $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n";
3049 }
3050
e34d0e58 3051 my $entry = { cidr => $cidr };
9d6f90e6
DM		 3052 $entry->{nomatch} = 1 if $nomatch;
3053 $entry->{comment} = $comment if $comment;
d46b1ef6 3054 $entry->{errors} = $errors if $errors;
e34d0e58 3055
c8c534f7 3056 if ($verbose && $errors) {
9a3061c7 3057 warn "$prefix - errors in ipset '$group': $line\n";
c8c534f7
DM		 3058 foreach my $p (keys %{$errors}) {
3059 warn " $p: $errors->{$p}\n";
3060 }
3061 }
3062
9d6f90e6 3063 push @{$res->{$section}->{$group}}, $entry;
644b5fc9 3064 $curr_group_keys->{$cidr} = 1;
1210ae94
DM		 3065 } else {
3066 warn "$prefix: skip line - unknown section\n";
3067 next;
51bae274 3068 }
5e1267a5
DM		 3069 }
3070
3071 return $res;
3072}
3073
fab41100
FG		 3074# this is only used to prevent concurrent runs of rule compilation/application
3075# see lock_*_conf for cfs locks protectiong config modification
06320eb0
DM		 3076sub run_locked {
3077 my ($code, @param) = @_;
3078
3079 my $timeout = 10;
3080
3081 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
3082
3083 die $@ if $@;
3084
3085 return $res;
3086}
3087
5e1267a5
DM		 3088sub read_local_vm_config {
3089
5e1267a5 3090 my $qemu = {};
3b4882dc 3091 my $lxc = {};
5e1267a5 3092
fdefeeab 3093 my $vmdata = { qemu => $qemu, lxc => $lxc };
5e1267a5 3094
c8301d63
DM		 3095 my $vmlist = PVE::Cluster::get_vmlist();
3096 return $vmdata if !$vmlist || !$vmlist->{ids};
3097 my $ids = $vmlist->{ids};
3098
3099 foreach my $vmid (keys %$ids) {
3100 next if !$vmid; # skip VE0
3101 my $d = $ids->{$vmid};
3102 next if !$d->{node} || $d->{node} ne $nodename;
3103 next if !$d->{type};
fdefeeab 3104 if ($d->{type} eq 'qemu') {
d9fee004 3105 if ($have_qemu_server) {
b5a16dd3 3106 my $cfspath = PVE::QemuConfig->cfs_config_path($vmid);
d9fee004
DM		 3107 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3108 $qemu->{$vmid} = $conf;
3109 }
c8301d63 3110 }
3b4882dc
AG		 3111 } elsif ($d->{type} eq 'lxc') {
3112 if ($have_lxc) {
a7c85d56 3113 my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
3b4882dc
AG		 3114 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3115 $lxc->{$vmid} = $conf;
3116 }
3117 }
3118 }
5e1267a5 3119 }
d9fee004 3120
5e1267a5
DM		 3121 return $vmdata;
3122};
3123
fab41100
FG		 3124sub lock_vmfw_conf {
3125 my ($vmid, $timeout, $code, @param) = @_;
3126
3127 die "can't lock VM firewall config for undefined VMID\n"
3128 if !defined($vmid);
3129
3130 my $res = PVE::Cluster::cfs_lock_firewall("vm-$vmid", $timeout, $code, @param);
3131 die $@ if $@;
3132
3133 return $res;
3134}
3135
e7b35711 3136sub load_vmfw_conf {
40af93c4 3137 my ($cluster_conf, $rule_env, $vmid, $dir) = @_;
e7b35711 3138
21053409 3139 $dir = $pvefw_conf_dir if !defined($dir);
8aef5177 3140 my $filename = "$dir/$vmid.fw";
585ede43
TL		 3141
3142 my $empty_conf = {
3143 rules => [],
3144 options => {},
3145 aliases => {},
3146 ipset => {} ,
3147 ipset_comments => {},
3148 };
3149
3150 my $vmfw_conf = generic_fw_config_parser($filename, $cluster_conf, $empty_conf, $rule_env);
3151 $vmfw_conf->{vmid} = $vmid;
e7b35711
DM		 3152
3153 return $vmfw_conf;
3154}
3155
464f933e 3156my $format_rules = sub {
dba740a9 3157 my ($rules, $allow_iface) = @_;
464f933e
DM		 3158
3159 my $raw = '';
3160
3161 foreach my $rule (@$rules) {
c14dacdf 3162 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 3163 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
3164 $raw .= uc($rule->{type});
7ca36671
DM		 3165 if ($rule->{macro}) {
3166 $raw .= " $rule->{macro}($rule->{action})";
3167 } else {
3168 $raw .= " " . $rule->{action};
3169 }
dba740a9
DM		 3170 if ($allow_iface && $rule->{iface}) {
3171 $raw .= " -i $rule->{iface}";
3172 }
c14dacdf
DM		 3173
3174 if ($rule->{type} ne 'group') {
dba740a9
DM		 3175 $raw .= " -source $rule->{source}" if $rule->{source};
3176 $raw .= " -dest $rule->{dest}" if $rule->{dest};
3177 $raw .= " -p $rule->{proto}" if $rule->{proto};
3178 $raw .= " -dport $rule->{dport}" if $rule->{dport};
3179 $raw .= " -sport $rule->{sport}" if $rule->{sport};
3489f8a2 3180 $raw .= " -log $rule->{log}" if $rule->{log};
c14dacdf
DM		 3181 }
3182
cbb5d6f3 3183 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 3184 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
3185 $raw .= "\n";
3186 } else {
c14dacdf 3187 die "unknown rule type '$rule->{type}'";
464f933e
DM		 3188 }
3189 }
3190
3191 return $raw;
3192};
3193
3194my $format_options = sub {
68c90e21
DM		 3195 my ($options) = @_;
3196
3197 my $raw = '';
464f933e
DM		 3198
3199 $raw .= "[OPTIONS]\n\n";
3200 foreach my $opt (keys %$options) {
3201 $raw .= "$opt: $options->{$opt}\n";
3202 }
3203 $raw .= "\n";
68c90e21
DM		 3204
3205 return $raw;
464f933e
DM		 3206};
3207
0d5f0a0f
DM		 3208my $format_aliases = sub {
3209 my ($aliases) = @_;
3210
3211 my $raw = '';
3212
3213 $raw .= "[ALIASES]\n\n";
3214 foreach my $k (keys %$aliases) {
81d574a7
DM		 3215 my $e = $aliases->{$k};
3216 $raw .= "$e->{name} $e->{cidr}";
3217 $raw .= " # " . encode('utf8', $e->{comment})
3218 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
3219 $raw .= "\n";
0d5f0a0f
DM		 3220 }
3221 $raw .= "\n";
3222
3223 return $raw;
3224};
3225
1210ae94
DM		 3226my $format_ipsets = sub {
3227 my ($fw_conf) = @_;
75a12a9d 3228
9d6f90e6
DM		 3229 my $raw = '';
3230
1210ae94
DM		 3231 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
3232 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
3233 my $utf8comment = encode('utf8', $comment);
3234 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
3235 } else {
3236 $raw .= "[IPSET $ipset]\n\n";
3237 }
3238 my $options = $fw_conf->{ipset}->{$ipset};
6e299ae3 3239
1210ae94
DM		 3240 my $nethash = {};
3241 foreach my $entry (@$options) {
644b5fc9
FG		 3242 my $cidr = $entry->{cidr};
3243 if (defined($nethash->{$cidr})) {
3244 warn "ignoring duplicate ipset entry '$cidr'\n";
3245 next;
3246 }
3247
3248 $nethash->{$cidr} = $entry;
1210ae94
DM		 3249 }
3250
3251 foreach my $cidr (sort keys %$nethash) {
3252 my $entry = $nethash->{$cidr};
3253 my $line = $entry->{nomatch} ? '!' : '';
3254 $line .= $entry->{cidr};
3255 $line .= " # " . encode('utf8', $entry->{comment})
3256 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
3257 $raw .= "$line\n";
3258 }
3259
3260 $raw .= "\n";
9d6f90e6 3261 }
e34d0e58 3262
9d6f90e6
DM		 3263 return $raw;
3264};
3265
464f933e
DM		 3266sub save_vmfw_conf {
3267 my ($vmid, $vmfw_conf) = @_;
3268
3269 my $raw = '';
3270
3271 my $options = $vmfw_conf->{options};
89ea63c8 3272 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3273
e76a9f53 3274 my $aliases = $vmfw_conf->{aliases};
89ea63c8 3275 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e76a9f53 3276
89ea63c8 3277 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
1210ae94 3278
8824b2f0 3279 my $rules = $vmfw_conf->{rules} || [];
89ea63c8 3280 if ($rules && scalar(@$rules)) {
464f933e
DM		 3281 $raw .= "[RULES]\n\n";
3282 $raw .= &$format_rules($rules, 1);
3283 $raw .= "\n";
3284 }
3285
21053409 3286 my $filename = "$pvefw_conf_dir/$vmid.fw";
c32e04e6
FG		 3287 if ($raw) {
3288 mkdir $pvefw_conf_dir;
3289 PVE::Tools::file_set_contents($filename, $raw);
3290 } else {
3291 unlink $filename;
3292 }
464f933e
DM		 3293}
3294
edee9035
AG		 3295sub remove_vmfw_conf {
3296 my ($vmid) = @_;
3297
3298 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
3299
3300 unlink $vmfw_conffile;
3301}
3302
5471ff7c
AG		 3303sub clone_vmfw_conf {
3304 my ($vmid, $newid) = @_;
3305
3306 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
3307 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
3308
9388a8f4
FG		 3309 lock_vmfw_conf($newid, 10, sub {
3310 if (-f $clonevm_conffile) {
3311 unlink $clonevm_conffile;
3312 }
3313 if (-f $sourcevm_conffile) {
3314 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
3315 PVE::Tools::file_set_contents($clonevm_conffile, $data);
3316 }
3317 });
5471ff7c
AG		 3318}
3319
6fc63ffd 3320sub read_vm_firewall_configs {
40af93c4 3321 my ($cluster_conf, $vmdata, $dir) = @_;
8aef5177 3322
6fc63ffd 3323 my $vmfw_configs = {};
c8301d63 3324
b6b8e6ad 3325 foreach my $vmid (keys %{$vmdata->{qemu}}) {
40af93c4 3326 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir);
75a12a9d 3327 next if !$vmfw_conf->{options}; # skip if file does not exist
b6b8e6ad
DM		 3328 $vmfw_configs->{$vmid} = $vmfw_conf;
3329 }
3b4882dc 3330 foreach my $vmid (keys %{$vmdata->{lxc}}) {
40af93c4 3331 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir);
75a12a9d 3332 next if !$vmfw_conf->{options}; # skip if file does not exist
3b4882dc
AG		 3333 $vmfw_configs->{$vmid} = $vmfw_conf;
3334 }
5e1267a5 3335
6fc63ffd 3336 return $vmfw_configs;
5e1267a5
DM		 3337}
3338
2d404ffc
DM		 3339sub get_option_log_level {
3340 my ($options, $k) = @_;
3341
3342 my $v = $options->{$k};
178a63be 3343 $v = $default_log_level if !defined($v);
2d404ffc
DM		 3344
3345 return undef if $v eq '' || $v eq 'nolog';
3346
3489f8a2 3347 return $v if defined($log_level_hash->{$v});
2d404ffc
DM		 3348
3349 warn "unknown log level ($k = '$v')\n";
3350
3351 return undef;
3352}
3353
d8f2505e 3354sub generate_std_chains {
db8a955f
DM		 3355 my ($ruleset, $options, $ipversion) = @_;
3356
3357 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
cbb5d6f3 3358
2d404ffc 3359 my $loglevel = get_option_log_level($options, 'smurf_log_level');
044409e5
TW		 3360 my $chain = 'PVEFW-smurflog';
3361 if ( $std_chains->{$chain} ) {
3362 foreach my $r (@{$std_chains->{$chain}}) {
3363 $r->{log} = $loglevel;
3364 }
db8a955f 3365 }
2d404ffc
DM		 3366
3367 # same as shorewall logflags action.
3368 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 3369 $chain = 'PVEFW-logflags';
044409e5
TW		 3370 if ( $std_chains->{$chain} ) {
3371 foreach my $r (@{$std_chains->{$chain}}) {
3372 $r->{log} = $loglevel;
3373 }
3374 }
d8f2505e 3375
db8a955f 3376 foreach my $chain (keys %$std_chains) {
d8f2505e 3377 ruleset_create_chain($ruleset, $chain);
db8a955f 3378 foreach my $rule (@{$std_chains->{$chain}}) {
d8f2505e 3379 if (ref($rule)) {
3489f8a2 3380 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0);
d8f2505e 3381 } else {
044409e5 3382 die "rule $rule as string - should not happen";
d8f2505e
DM		 3383 }
3384 }
3385 }
3386}
3387
34cdedfa 3388sub generate_ipset_chains {
74601077 3389 my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_;
34cdedfa 3390
74601077 3391 foreach my $ipset (keys %{$ipsets}) {
34cdedfa 3392
74601077 3393 my $options = $ipsets->{$ipset};
34cdedfa 3394
ebf72e49
WB		 3395 if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) {
3396 if (my $ips = $device_ips->{$1}) {
3397 $options = [@$options, @$ips];
3398 }
3399 }
3400
88c26d5e
DM		 3401 # remove duplicates
3402 my $nethash = {};
3403 foreach my $entry (@$options) {
3404 next if $entry->{errors}; # skip entries with errors
3405 eval {
3406 my ($cidr, $ver);
3407 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
3408 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
3409 } else {
3410 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
3411 }
3412 #http://backreference.org/2013/03/01/ipv6-address-normalization/
3413 if ($ver == 6) {
e0a9139f
WB		 3414 # ip_compress_address takes an address only, no CIDR
3415 my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@);
3416 $cidr = lc(Net::IP::ip_compress_address($addr, 6));
3417 $cidr .= $prefix_len if defined($prefix_len);
88c26d5e
DM		 3418 $cidr =~ s|/128$||;
3419 } else {
3420 $cidr =~ s|/32$||;
3421 }
34cdedfa 3422
88c26d5e
DM		 3423 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
3424 };
3425 warn $@ if $@;
3426 }
6d959e3f 3427
88c26d5e
DM		 3428 foreach my $ipversion (4, 6) {
3429 my $data = $nethash->{$ipversion};
30f1b100 3430
88c26d5e 3431 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
6d959e3f 3432
88c26d5e
DM		 3433 my $hashsize = scalar(@$options);
3434 if ($hashsize <= 64) {
3435 $hashsize = 64;
3436 } else {
3437 $hashsize = round_powerof2($hashsize);
3438 }
6d959e3f 3439
88c26d5e 3440 my $family = $ipversion == "6" ? "inet6" : "inet";
30f1b100 3441
88c26d5e 3442 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
6d959e3f 3443
88c26d5e
DM		 3444 foreach my $cidr (sort keys %$data) {
3445 my $entry = $data->{$cidr};
6d959e3f 3446
88c26d5e
DM		 3447 my $cmd = "add $name $cidr";
3448 if ($entry->{nomatch}) {
3449 if ($feature_ipset_nomatch) {
3450 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3451 } else {
3452 warn "ignore !$cidr - nomatch not supported by kernel\n";
3453 }
6d959e3f 3454 } else {
88c26d5e 3455 push @{$ipset_ruleset->{$name}}, $cmd;
6d959e3f 3456 }
9d6f90e6 3457 }
9d6f90e6 3458 }
34cdedfa 3459 }
2a052ee3
AD		 3460}
3461
3462sub round_powerof2 {
dd7a13fd 3463 my ($int) = @_;
2a052ee3 3464
dd7a13fd
DM		 3465 $int--;
3466 $int |= $int >> $_ foreach (1,2,4,8,16);
3467 return ++$int;
34cdedfa
AD		 3468}
3469
cc37e000
TL		 3470my $set_global_log_ratelimit = sub {
3471 my $cluster_opts = shift;
3472
3473 $global_log_ratelimit = '--limit 1/sec';
3474 if (defined(my $log_rlimit = $cluster_opts->{log_ratelimit})) {
3475 my $ll_format = $cluster_option_properties->{log_ratelimit}->{format};
3476 my $limit = PVE::JSONSchema::parse_property_string($ll_format, $log_rlimit);
3477
3478 if ($limit->{enable}) {
3479 if (my $rate = $limit->{rate}) {
3480 $global_log_ratelimit = "--limit $rate";
3481 }
3482 if (my $burst = $limit->{burst}) {
3483 $global_log_ratelimit .= " --limit-burst $burst";
3484 }
3485 } else {
3486 $global_log_ratelimit = undef;
3487 }
3488 }
3489};
3490
fab41100
FG		 3491sub lock_clusterfw_conf {
3492 my ($timeout, $code, @param) = @_;
3493
3494 my $res = PVE::Cluster::cfs_lock_firewall("cluster", $timeout, $code, @param);
3495 die $@ if $@;
3496
3497 return $res;
3498}
3499
fca39c2c 3500sub load_clusterfw_conf {
40af93c4 3501 my ($filename) = @_;
8aef5177
DM		 3502
3503 $filename = $clusterfw_conf_filename if !defined($filename);
585ede43
TL		 3504 my $empty_conf = {
3505 rules => [],
3506 options => {},
3507 aliases => {},
3508 groups => {},
3509 group_comments => {},
3510 ipset => {} ,
3511 ipset_comments => {},
3512 };
530c005e 3513
585ede43
TL		 3514 my $cluster_conf = generic_fw_config_parser($filename, $empty_conf, $empty_conf, 'cluster');
3515 $set_global_log_ratelimit->($cluster_conf->{options});
5e1267a5 3516
fca39c2c 3517 return $cluster_conf;
e5d76bde
DM		 3518}
3519
fca39c2c
DM		 3520sub save_clusterfw_conf {
3521 my ($cluster_conf) = @_;
9c7e0858
DM		 3522
3523 my $raw = '';
9c7e0858 3524
c6f5cc88 3525 my $options = $cluster_conf->{options};
89ea63c8 3526 $raw .= &$format_options($options) if $options && scalar(keys %$options);
9c7e0858 3527
0d5f0a0f 3528 my $aliases = $cluster_conf->{aliases};
89ea63c8 3529 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
e34d0e58 3530
89ea63c8 3531 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
75a12a9d 3532
c6f5cc88 3533 my $rules = $cluster_conf->{rules};
89ea63c8 3534 if ($rules && scalar(@$rules)) {
c6f5cc88 3535 $raw .= "[RULES]\n\n";
63c91681 3536 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 3537 $raw .= "\n";
3538 }
3539
89ea63c8
DM		 3540 if ($cluster_conf->{groups}) {
3541 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3542 my $rules = $cluster_conf->{groups}->{$group};
3543 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3544 my $utf8comment = encode('utf8', $comment);
3545 $raw .= "[group $group] # $utf8comment\n\n";
3546 } else {
3547 $raw .= "[group $group]\n\n";
3548 }
0d22acb3 3549
89ea63c8
DM		 3550 $raw .= &$format_rules($rules, 0);
3551 $raw .= "\n";
3552 }
9c7e0858
DM		 3553 }
3554
c32e04e6
FG		 3555 if ($raw) {
3556 mkdir $pvefw_conf_dir;
3557 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3558 } else {
3559 unlink $clusterfw_conf_filename;
3560 }
9c7e0858
DM		 3561}
3562
fab41100
FG		 3563sub lock_hostfw_conf {
3564 my ($timeout, $code, @param) = @_;
3565
3566 my $res = PVE::Cluster::cfs_lock_firewall("host-$nodename", $timeout, $code, @param);
3567 die $@ if $@;
3568
3569 return $res;
3570}
3571
8b27beb9 3572sub load_hostfw_conf {
40af93c4 3573 my ($cluster_conf, $filename) = @_;
8aef5177
DM		 3574
3575 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9 3576
585ede43
TL		 3577 my $empty_conf = { rules => [], options => {}};
3578 return generic_fw_config_parser($filename, $cluster_conf, $empty_conf, 'host');
8b27beb9
DM		 3579}
3580
63c91681
DM		 3581sub save_hostfw_conf {
3582 my ($hostfw_conf) = @_;
3583
3584 my $raw = '';
3585
3586 my $options = $hostfw_conf->{options};
89ea63c8 3587 $raw .= &$format_options($options) if $options && scalar(keys %$options);
cbb5d6f3 3588
63c91681 3589 my $rules = $hostfw_conf->{rules};
89ea63c8 3590 if ($rules && scalar(@$rules)) {
63c91681
DM		 3591 $raw .= "[RULES]\n\n";
3592 $raw .= &$format_rules($rules, 1);
3593 $raw .= "\n";
3594 }
3595
c32e04e6
FG		 3596 if ($raw) {
3597 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3598 } else {
3599 unlink $hostfw_conf_filename;
3600 }
63c91681
DM		 3601}
3602
e5d76bde 3603sub compile {
06208a01 3604 my ($cluster_conf, $hostfw_conf, $vmdata, $corosync_conf) = @_;
3dfa8a7f 3605
8aef5177
DM		 3606 my $vmfw_configs;
3607
cfd7cd9c
TW		 3608 # fixme: once we read standard chains from config this needs to be put in test/standard cases below
3609 $pve_std_chains = dclone($pve_std_chains_conf);
3610
8aef5177
DM		 3611 if ($vmdata) { # test mode
3612 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3613 my $filename = "$testdir/cluster.fw";
40af93c4 3614 $cluster_conf = load_clusterfw_conf($filename);
8aef5177
DM		 3615
3616 $filename = "$testdir/host.fw";
40af93c4 3617 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename);
8aef5177 3618
40af93c4 3619 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir);
8aef5177 3620 } else { # normal operation
40af93c4 3621 $cluster_conf = load_clusterfw_conf(undef) if !$cluster_conf;
8aef5177 3622
40af93c4 3623 $hostfw_conf = load_hostfw_conf($cluster_conf, undef) if !$hostfw_conf;
8aef5177 3624
06208a01 3625 # cfs_update is handled by daemon or API
328d1e87
SR		 3626 $corosync_conf = PVE::Cluster::cfs_read_file("corosync.conf")
3627 if !defined($corosync_conf) && PVE::Corosync::check_conf_exists(1);
06208a01 3628
8aef5177 3629 $vmdata = read_local_vm_config();
40af93c4 3630 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef);
8aef5177 3631 }
3dfa8a7f 3632
84025e99 3633 return ({},{},{},{}) if !$cluster_conf->{options}->{enable};
9268573a 3634
525778d7
DM		 3635 my $localnet;
3636 if ($cluster_conf->{aliases}->{local_network}) {
3637 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3638 } else {
afcd29b3
DM		 3639 my $localnet_ver;
3640 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3641
84025e99 3642 $cluster_conf->{aliases}->{local_network} = {
afcd29b3 3643 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
525778d7
DM		 3644 }
3645
3646 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
bfc488f6 3647
64e0adf4
AD		 3648 my $ruleset = {};
3649 my $rulesetv6 = {};
3650 $ruleset->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
3651 $ruleset->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
3652 $rulesetv6->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
3653 $rulesetv6->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
40af93c4 3654 my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata);
147dd882
WB		 3655 my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata);
3656
c5e8b008 3657 return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
147dd882
WB		 3658}
3659
64e0adf4
AD		 3660sub compile_iptables_raw {
3661 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
3662
3663 my $ruleset = {};
3664
ac5dd88e
AD		 3665 my $hostfw_options = $hostfw_conf->{options} || {};
3666 my $protection_synflood = $hostfw_options->{protection_synflood} || 0;
3667
3668 if($protection_synflood) {
3669
3670 my $protection_synflood_rate = $hostfw_options->{protection_synflood_rate} ? $hostfw_options->{protection_synflood_rate} : 200;
3671 my $protection_synflood_burst = $hostfw_options->{protection_synflood_burst} ? $hostfw_options->{protection_synflood_burst} : 1000;
3672 my $protection_synflood_limit = $hostfw_options->{protection_synflood_limit} ? $hostfw_options->{protection_synflood_limit} : 3000;
3673 my $protection_synflood_expire = $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} ? $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} : 60;
3674 $protection_synflood_expire = $protection_synflood_expire * 1000;
3675 my $protection_synflood_mask = $ipversion == 4 ? 32 : 64;
3676
3677 ruleset_create_chain($ruleset, "PVEFW-PREROUTING");
3678 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");
3679 }
3680
64e0adf4
AD		 3681 return $ruleset;
3682}
3683
147dd882 3684sub compile_iptables_filter {
06208a01 3685 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
085fd492 3686
3fa83edf
DM		 3687 my $ruleset = {};
3688
dec84fcd
DM		 3689 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3690 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 3691
fadb13dd 3692 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 3693
8b27beb9 3694 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 3695
88733a74
AD		 3696 # fixme: what log level should we use here?
3697 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3698
b409c8a8
TL		 3699 my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0;
3700 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT");
88733a74 3701
e2943485 3702 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
88c26d5e 3703 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
e2943485 3704
1e9c5070 3705 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN");
e2943485
DM		 3706
3707 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
1e9c5070 3708 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT");
e2943485 3709
db8a955f 3710 generate_std_chains($ruleset, $hostfw_options, $ipversion);
fadb13dd 3711
6d2ab017 3712 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 3713
35d1d6da 3714 if ($hostfw_enable) {
06208a01 3715 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf); };
1a9978ed
DM		 3716 warn $@ if $@; # just to be sure - should not happen
3717 }
3fa83edf 3718
6158271d 3719 # generate firewall rules for QEMU VMs
0a0ba19e 3720 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
1a9978ed
DM		 3721 eval {
3722 my $conf = $vmdata->{qemu}->{$vmid};
3723 my $vmfw_conf = $vmfw_configs->{$vmid};
bd60a824 3724 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
1a9978ed 3725
0a0ba19e 3726 foreach my $netid (sort keys %$conf) {
1a9978ed
DM		 3727 next if $netid !~ m/^net(\d+)$/;
3728 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3729 next if !$net->{firewall};
1a9978ed 3730
ad722fb4 3731 my $iface = "tap${vmid}i$1";
1a9978ed
DM		 3732 my $macaddr = $net->{macaddr};
3733 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
ad722fb4 3734 $vmfw_conf, $vmid, 'IN', $ipversion);
1a9978ed 3735 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
ad722fb4 3736 $vmfw_conf, $vmid, 'OUT', $ipversion);
1a9978ed
DM		 3737 }
3738 };
3739 warn $@ if $@; # just to be sure - should not happen
3fa83edf 3740 }
c8301d63 3741
3b4882dc 3742 # generate firewall rules for LXC containers
0a0ba19e 3743 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
ad722fb4
FG		 3744 eval {
3745 my $conf = $vmdata->{lxc}->{$vmid};
3746 my $vmfw_conf = $vmfw_configs->{$vmid};
3747 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
3748
3749 foreach my $netid (sort keys %$conf) {
3750 next if $netid !~ m/^net(\d+)$/;
3751 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3752 next if !$net->{firewall};
3753
3754 my $iface = "veth${vmid}i$1";
3755 my $macaddr = $net->{hwaddr};
3756 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3757 $vmfw_conf, $vmid, 'IN', $ipversion);
3758 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3759 $vmfw_conf, $vmid, 'OUT', $ipversion);
3760 }
3761 };
3762 warn $@ if $@; # just to be sure - should not happen
3b4882dc
AG		 3763 }
3764
ad722fb4 3765 if (ruleset_chain_exist($ruleset, "PVEFW-IPS")){
1e9c5070 3766 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS");
097820b0
AD		 3767 }
3768
147dd882
WB		 3769 return $ruleset;
3770}
3771
ebf72e49
WB		 3772sub mac_to_linklocal {
3773 my ($macaddr) = @_;
3774 my @parts = split(/:/, $macaddr);
3775 # The standard link local address uses the fe80::/64 prefix with the
3776 # modified EUI-64 identifier derived from the MAC address by flipping the
3777 # universal/local bit and inserting FF:FE in the middle.
3778 # See RFC 4291.
3779 $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02);
3780 my @meui64 = (@parts[0,1,2], 'ff', 'fe', @parts[3,4,5]);
3781 return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]";
3782}
3783
147dd882
WB		 3784sub compile_ipsets {
3785 my ($cluster_conf, $vmfw_configs, $vmdata) = @_;
3786
3787 my $localnet;
3788 if ($cluster_conf->{aliases}->{local_network}) {
3789 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3790 } else {
3791 my $localnet_ver;
3792 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3793
75a12a9d 3794 $cluster_conf->{aliases}->{local_network} = {
147dd882
WB		 3795 name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
3796 }
3797
3798 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3799
3800
3801 my $ipset_ruleset = {};
3802
3803 # generate ipsets for QEMU VMs
3804 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3805 eval {
3806 my $conf = $vmdata->{qemu}->{$vmid};
3807 my $vmfw_conf = $vmfw_configs->{$vmid};
3808 return if !$vmfw_conf;
3809
74601077
WB		 3810 # When the 'ipfilter' option is enabled every device for which there
3811 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3812 # ipset.
3813 # The reason is that ipfilter ipsets are always filled with standard
3814 # IPv6 link-local filters.
3815 my $ipsets = $vmfw_conf->{ipset};
3816 my $implicit_sets = {};
3817
ebf72e49
WB		 3818 my $device_ips = {};
3819 foreach my $netid (keys %$conf) {
3820 next if $netid !~ m/^net(\d+)$/;
3821 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3822 next if !$net->{firewall};
3823
74601077
WB		 3824 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3825 $implicit_sets->{"ipfilter-$netid"} = [];
3826 }
3827
ebf72e49
WB		 3828 my $macaddr = $net->{macaddr};
3829 my $linklocal = mac_to_linklocal($macaddr);
3830 $device_ips->{$netid} = [
3831 { cidr => $linklocal },
3832 { cidr => 'fe80::/10', nomatch => 1 }
3833 ];
3834 }
3835
74601077
WB		 3836 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3837 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
147dd882
WB		 3838 };
3839 warn $@ if $@; # just to be sure - should not happen
3840 }
3841
3842 # generate firewall rules for LXC containers
3843 foreach my $vmid (keys %{$vmdata->{lxc}}) {
aa229652
WB		 3844 eval {
3845 my $conf = $vmdata->{lxc}->{$vmid};
3846 my $vmfw_conf = $vmfw_configs->{$vmid};
3847 return if !$vmfw_conf;
147dd882 3848
74601077
WB		 3849 # When the 'ipfilter' option is enabled every device for which there
3850 # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
3851 # ipset.
3852 # The reason is that ipfilter ipsets are always filled with standard
383fe679
WB		 3853 # IPv6 link-local filters, as well as the IP addresses configured
3854 # for the container.
74601077
WB		 3855 my $ipsets = $vmfw_conf->{ipset};
3856 my $implicit_sets = {};
3857
ebf72e49
WB		 3858 my $device_ips = {};
3859 foreach my $netid (keys %$conf) {
3860 next if $netid !~ m/^net(\d+)$/;
a7c85d56 3861 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
ebf72e49
WB		 3862 next if !$net->{firewall};
3863
74601077
WB		 3864 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3865 $implicit_sets->{"ipfilter-$netid"} = [];
3866 }
3867
ebf72e49
WB		 3868 my $macaddr = $net->{hwaddr};
3869 my $linklocal = mac_to_linklocal($macaddr);
383fe679 3870 my $set = $device_ips->{$netid} = [
ebf72e49
WB		 3871 { cidr => $linklocal },
3872 { cidr => 'fe80::/10', nomatch => 1 }
3873 ];
37ef1ce1 3874 if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) {
383fe679
WB		 3875 push @$set, { cidr => $1 };
3876 }
37ef1ce1 3877 if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) {
383fe679
WB		 3878 push @$set, { cidr => $1 };
3879 }
ebf72e49
WB		 3880 }
3881
74601077
WB		 3882 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3883 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
aa229652
WB		 3884 };
3885 warn $@ if $@; # just to be sure - should not happen
147dd882
WB		 3886 }
3887
74601077 3888 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset});
27083984 3889
147dd882 3890 return $ipset_ruleset;
3fa83edf
DM		 3891}
3892
c5e8b008 3893sub compile_ebtables_filter {
40af93c4 3894 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata) = @_;
c5e8b008 3895
2549e7ef 3896 if (!($cluster_conf->{options}->{ebtables} // 1)) {
84025e99
SI		 3897 return {};
3898 }
c5e8b008
AD		 3899
3900 my $ruleset = {};
3901
3902 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3903
c5e8b008
AD		 3904 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3905 #for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED', to speedup rules
3906 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv4', '-j ACCEPT');
3907 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv6', '-j ACCEPT');
3908 ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-o fwln+', '-j PVEFW-FWBR-OUT');
3909
3910 # generate firewall rules for QEMU VMs
2e30c5c7 3911 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
c5e8b008
AD		 3912 eval {
3913 my $conf = $vmdata->{qemu}->{$vmid};
3914 my $vmfw_conf = $vmfw_configs->{$vmid};
3915 return if !$vmfw_conf;
401c141b 3916 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3917
4a1072dd 3918 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3919 next if $netid !~ m/^net(\d+)$/;
3920 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3921 next if !$net->{firewall};
3922 my $iface = "tap${vmid}i$1";
3923 my $macaddr = $net->{macaddr};
401c141b
AD		 3924 my $arpfilter = [];
3925 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3926 foreach my $ipaddr (@$ipset) {
3927 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3928 next if !$ip || ($version && $version != 4);
3929 push(@$arpfilter, $ip);
3930 }
3931 }
3932 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3933 }
3934 };
3935 warn $@ if $@; # just to be sure - should not happen
3936 }
3937
3938 # generate firewall rules for LXC containers
2e30c5c7 3939 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
c5e8b008
AD		 3940 eval {
3941 my $conf = $vmdata->{lxc}->{$vmid};
3942
3943 my $vmfw_conf = $vmfw_configs->{$vmid};
3944 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
401c141b 3945 my $ipsets = $vmfw_conf->{ipset};
c5e8b008 3946
4a1072dd 3947 foreach my $netid (sort keys %$conf) {
c5e8b008
AD		 3948 next if $netid !~ m/^net(\d+)$/;
3949 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3950 next if !$net->{firewall};
3951 my $iface = "veth${vmid}i$1";
3952 my $macaddr = $net->{hwaddr};
401c141b
AD		 3953 my $arpfilter = [];
3954 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3955 foreach my $ipaddr (@$ipset) {
3956 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3957 next if !$ip || ($version && $version != 4);
3958 push(@$arpfilter, $ip);
3959 }
3960 }
03984808 3961 if (defined(my $ip = $net->{ip}) && $vmfw_conf->{options}->{ipfilter}) {
a9068b2d
TL		 3962 # ebtables changes this to a .0/MASK network but we just
3963 # want the address here, no network - see #2193
255698f6 3964 $ip =~ s|/(\d+)$||;
c5a10084
ML		 3965 if ($ip ne 'dhcp') {
3966 push @$arpfilter, $ip;
3967 }
556ae5c1 3968 }
401c141b 3969 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
c5e8b008
AD		 3970 }
3971 };
3972 warn $@ if $@; # just to be sure - should not happen
3973 }
3974
3975 return $ruleset;
3976}
3977
3978sub generate_tap_layer2filter {
401c141b 3979 my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_;
c5e8b008
AD		 3980 my $options = $vmfw_conf->{options};
3981
3982 my $tapchain = $iface."-OUT";
3983
3984 # ebtables remove zeros from mac pairs
3985 $macaddr =~ s/0([0-9a-f])/$1/ig;
3986 $macaddr = lc($macaddr);
3987
3988 ruleset_create_chain($ruleset, $tapchain);
3989
3990 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
3991 ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP');
3992 }
3993
401c141b
AD		 3994 if (@$arpfilter){
3995 my $arpchain = $tapchain."-ARP";
3996 ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain");
3997 ruleset_create_chain($ruleset, $arpchain);
3998
3999 foreach my $ip (@{$arpfilter}) {
4000 ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN');
4001 }
4002 ruleset_addrule($ruleset, $arpchain, '', '-j DROP');
4003 }
4004
c5e8b008 4005 if (defined($options->{layer2_protocols})){
33efd363
AD		 4006 my $protochain = $tapchain."-PROTO";
4007 ruleset_addrule($ruleset, $tapchain, '', "-j $protochain");
4008 ruleset_create_chain($ruleset, $protochain);
4009
c5e8b008 4010 foreach my $proto (split(/,/, $options->{layer2_protocols})) {
33efd363 4011 ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN');
c5e8b008 4012 }
33efd363 4013 ruleset_addrule($ruleset, $protochain, '', '-j DROP');
c5e8b008
AD		 4014 }
4015
33efd363
AD		 4016 ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT');
4017
c5e8b008
AD		 4018 ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT', "-i $iface", "-j $tapchain");
4019}
4020
84025e99
SI		 4021# the parameter $change_only_regex changes two things if defined:
4022# * all chains not matching it will be left intact
4023# * both the $active_chains hash and the returned status_hash have different
4024# structure (they contain a key named 'rules').
3fa83edf 4025sub get_ruleset_status {
40af93c4 4026 my ($ruleset, $active_chains, $digest_fn, $change_only_regex) = @_;
3fa83edf
DM		 4027
4028 my $statushash = {};
4029
4030 foreach my $chain (sort keys %$ruleset) {
84025e99
SI		 4031 my $rules = $ruleset->{$chain};
4032 my $sig = &$digest_fn($rules);
4033 my $oldsig;
9bf7d929 4034
3fa83edf 4035 $statushash->{$chain}->{sig} = $sig;
84025e99
SI		 4036 if (defined($change_only_regex)) {
4037 $oldsig = $active_chains->{$chain}->{sig};
4038 $statushash->{$chain}->{rules} = $rules;
4039 } else {
4040 $oldsig = $active_chains->{$chain};
4041 }
3fa83edf
DM		 4042 if (!defined($oldsig)) {
4043 $statushash->{$chain}->{action} = 'create';
4044 } else {
4045 if ($oldsig eq $sig) {
4046 $statushash->{$chain}->{action} = 'exists';
4047 } else {
4048 $statushash->{$chain}->{action} = 'update';
4049 }
4050 }
84025e99
SI		 4051 if ($verbose) {
4052 print "$statushash->{$chain}->{action} $chain ($sig)\n";
4053 foreach my $cmd (@{$rules}) {
4054 print "\t$cmd\n";
4055 }
3fa83edf
DM		 4056 }
4057 }
4058
4059 foreach my $chain (sort keys %$active_chains) {
84025e99
SI		 4060 next if defined($ruleset->{$chain});
4061 my $action = 'delete';
d9551052 4062 my $sig = $active_chains->{$chain};
84025e99
SI		 4063 if (defined($change_only_regex)) {
4064 $action = 'ignore' if ($chain !~ m/$change_only_regex/);
4065 $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules};
d9551052 4066 $sig = $sig->{sig};
84025e99 4067 }
84025e99
SI		 4068 $statushash->{$chain}->{action} = $action;
4069 $statushash->{$chain}->{sig} = $sig;
4070 print "$action $chain ($sig)\n" if $verbose;
6158271d 4071 }
2a052ee3 4072
3fa83edf
DM		 4073 return $statushash;
4074}
4075
3fa83edf
DM		 4076sub print_sig_rule {
4077 my ($chain, $sig) = @_;
4078
09d5f68e
DM		 4079 # We just use this to store a SHA1 checksum used to detect changes
4080 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 4081}
4082
df7cb349 4083sub get_ruleset_cmdlist {
64e0adf4 4084 my ($ruleset, $iptablescmd, $table) = @_;
3fa83edf 4085
64e0adf4 4086 $table = 'filter' if !$table;
cbb5d6f3 4087
64e0adf4
AD		 4088 my $cmdlist = "*$table\n"; # we pass this to iptables-restore;
4089
4090 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd, $table);
40af93c4 4091 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest);
3fa83edf
DM		 4092
4093 # create missing chains first
4094 foreach my $chain (sort keys %$ruleset) {
4095 my $stat = $statushash->{$chain};
4096 die "internal error" if !$stat;
4097 next if $stat->{action} ne 'create';
886aba9c 4098
3fa83edf
DM		 4099 $cmdlist .= ":$chain - [0:0]\n";
4100 }
4101
64e0adf4 4102 foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
55fad3b7
DM		 4103 my $chain = "PVEFW-$h";
4104 if ($ruleset->{$chain} && !$hooks->{$h}) {
4105 $cmdlist .= "-A $h -j $chain\n";
4bd0a9c4 4106 }
3fa83edf
DM		 4107 }
4108
4109 foreach my $chain (sort keys %$ruleset) {
4110 my $stat = $statushash->{$chain};
4111 die "internal error" if !$stat;
4112
4113 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
4114 $cmdlist .= "-F $chain\n";
4115 foreach my $cmd (@{$ruleset->{$chain}}) {
4116 $cmdlist .= "$cmd\n";
4117 }
4118 $cmdlist .= print_sig_rule($chain, $stat->{sig});
4119 } elsif ($stat->{action} eq 'delete') {
f5d28682 4120 die "internal error"; # this should not happen
3fa83edf
DM		 4121 } elsif ($stat->{action} eq 'exists') {
4122 # do nothing
4123 } else {
4124 die "internal error - unknown status '$stat->{action}'";
4125 }
4126 }
4127
f5d28682
DM		 4128 foreach my $chain (keys %$statushash) {
4129 next if $statushash->{$chain}->{action} ne 'delete';
4130 $cmdlist .= "-F $chain\n";
4131 }
4132 foreach my $chain (keys %$statushash) {
4133 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 4134 next if $chain eq 'PVEFW-INPUT';
4135 next if $chain eq 'PVEFW-OUTPUT';
4136 next if $chain eq 'PVEFW-FORWARD';
64e0adf4 4137 next if $chain eq 'PVEFW-PREROUTING';
f5d28682
DM		 4138 $cmdlist .= "-X $chain\n";
4139 }
4140
64e0adf4 4141 my $changes = $cmdlist ne "*$table\n" ? 1 : 0;
4bd0a9c4 4142
3fa83edf
DM		 4143 $cmdlist .= "COMMIT\n";
4144
3f95d14a 4145 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 4146}
4147
d4a23c88 4148my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/;
84025e99 4149
151c209e 4150sub get_ebtables_cmdlist {
40af93c4 4151 my ($ruleset) = @_;
151c209e
AD		 4152
4153 my $changes = 0;
4154 my $cmdlist = "*filter\n";
4155
84025e99
SI		 4156 my $active_chains = ebtables_get_chains();
4157 my $statushash = get_ruleset_status($ruleset, $active_chains,
40af93c4 4158 \&iptables_chain_digest,
84025e99 4159 $pve_ebtables_chainname_regex);
151c209e 4160
84025e99
SI		 4161 # create chains first and make sure PVE rules are evaluated if active
4162 my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD';
4163 my $pve_include = 0;
4164 foreach my $chain (sort keys %$statushash) {
4165 next if ($statushash->{$chain}->{action} eq 'delete');
151c209e 4166 $cmdlist .= ":$chain ACCEPT\n";
84025e99 4167 $pve_include = 1 if ($chain eq 'PVEFW-FORWARD');
151c209e
AD		 4168 }
4169
84025e99 4170 foreach my $chain (sort keys %$statushash) {
151c209e 4171 my $stat = $statushash->{$chain};
84025e99 4172 $changes = 1 if ($stat->{action} !~ 'ignore|exists');
defdf28e 4173 next if ($stat->{action} eq 'delete');
151c209e 4174
84025e99
SI		 4175 foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) {
4176 if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) {
4177 next if ! $pve_include;
4178 $pve_include = 0;
4179 }
151c209e
AD		 4180 $cmdlist .= "$cmd\n";
4181 }
4182 }
84025e99 4183 $cmdlist .= "$append_pve_to_forward\n" if $pve_include;
151c209e
AD		 4184
4185 return wantarray ? ($cmdlist, $changes) : $cmdlist;
4186}
4187
34cdedfa 4188sub get_ipset_cmdlist {
40af93c4 4189 my ($ruleset) = @_;
34cdedfa
AD		 4190
4191 my $cmdlist = "";
4192
dd7a13fd
DM		 4193 my $delete_cmdlist = "";
4194
4bd0a9c4 4195 my $active_chains = ipset_get_chains();
40af93c4 4196 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest);
34cdedfa 4197
e34d0e58 4198 # remove stale _swap chains
30f1b100
DM		 4199 foreach my $chain (keys %$active_chains) {
4200 if ($chain =~ m/^PVEFW-\S+_swap$/) {
4201 $cmdlist .= "destroy $chain\n";
4202 }
4203 }
4204
c69cf614 4205 foreach my $chain (keys %$ruleset) {
c69cf614
DM		 4206 my $stat = $statushash->{$chain};
4207 die "internal error" if !$stat;
4208
4209 if ($stat->{action} eq 'create') {
4210 foreach my $cmd (@{$ruleset->{$chain}}) {
4211 $cmdlist .= "$cmd\n";
4212 }
4213 }
4214 }
4215
4216 foreach my $chain (keys %$ruleset) {
6d959e3f
DM		 4217 my $stat = $statushash->{$chain};
4218 die "internal error" if !$stat;
34cdedfa 4219
dd7a13fd
DM		 4220 if ($stat->{action} eq 'update') {
4221 my $chain_swap = $chain."_swap";
cbb5d6f3 4222
dd7a13fd
DM		 4223 foreach my $cmd (@{$ruleset->{$chain}}) {
4224 $cmd =~ s/$chain/$chain_swap/;
4225 $cmdlist .= "$cmd\n";
34cdedfa 4226 }
dd7a13fd
DM		 4227 $cmdlist .= "swap $chain_swap $chain\n";
4228 $cmdlist .= "flush $chain_swap\n";
4229 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 4230 }
dd7a13fd 4231 }
3f95d14a 4232
88c26d5e 4233 # the remove unused chains
c69cf614 4234 foreach my $chain (keys %$statushash) {
dd7a13fd 4235 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 4236
dd7a13fd
DM		 4237 $delete_cmdlist .= "flush $chain\n";
4238 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 4239 }
4240
dd7a13fd 4241 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 4242
dd7a13fd 4243 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 4244}
4245
6b9f68a2 4246sub apply_ruleset {
40af93c4 4247 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = @_;
6b9f68a2
DM		 4248
4249 enable_bridge_firewall();
4250
cbb5d6f3 4251 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
40af93c4 4252 get_ipset_cmdlist($ipset_ruleset);
6b9f68a2 4253
64e0adf4
AD		 4254 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset->{filter});
4255 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6->{filter}, "ip6tables");
40af93c4 4256 my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset);
64e0adf4
AD		 4257 my ($cmdlist_raw, $changes_raw) = get_ruleset_cmdlist($ruleset->{raw}, undef, 'raw');
4258 my ($cmdlistv6_raw, $changesv6_raw) = get_ruleset_cmdlist($rulesetv6->{raw}, "ip6tables", 'raw');
2a052ee3 4259
81a0bf43
DM		 4260 if ($verbose) {
4261 if ($ipset_changes) {
4262 print "ipset changes:\n";
4263 print $ipset_create_cmdlist if $ipset_create_cmdlist;
4264 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
4265 }
3f95d14a 4266
81a0bf43
DM		 4267 if ($changes) {
4268 print "iptables changes:\n";
4269 print $cmdlist;
4270 }
17da5c0f
AD		 4271
4272 if ($changesv6) {
4273 print "ip6tables changes:\n";
4274 print $cmdlistv6;
4275 }
151c209e 4276
64e0adf4
AD		 4277 if ($changes_raw) {
4278 print "iptables table raw changes:\n";
4279 print $cmdlist_raw;
4280 }
4281
4282 if ($changesv6_raw) {
4283 print "ip6tables table raw changes:\n";
4284 print $cmdlistv6_raw;
4285 }
4286
151c209e
AD		 4287 if ($ebtables_changes) {
4288 print "ebtables changes:\n";
4289 print $ebtables_cmdlist;
4290 }
81a0bf43 4291 }
3fa83edf 4292
259db1e6
DM		 4293 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
4294 PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || '');
4295
2a052ee3 4296 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 4297
259db1e6
DM		 4298 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
4299 PVE::Tools::file_set_contents($tmpfile, $cmdlist || '');
4300
3fa83edf 4301 iptables_restore_cmdlist($cmdlist);
259db1e6 4302
64e0adf4
AD		 4303 $tmpfile = "$pve_fw_status_dir/ip4cmdlistraw";
4304 PVE::Tools::file_set_contents($tmpfile, $cmdlist_raw || '');
4305
4306 iptables_restore_cmdlist($cmdlist_raw, 'raw');
4307
259db1e6
DM		 4308 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
4309 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
4310
17da5c0f 4311 ip6tables_restore_cmdlist($cmdlistv6);
3fa83edf 4312
64e0adf4
AD		 4313 $tmpfile = "$pve_fw_status_dir/ip6cmdlistraw";
4314 PVE::Tools::file_set_contents($tmpfile, $cmdlistv6_raw || '');
4315
4316 ip6tables_restore_cmdlist($cmdlistv6_raw, 'raw');
4317
259db1e6
DM		 4318 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
4319 PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
4320
dd7a13fd 4321 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 4322
151c209e
AD		 4323 ebtables_restore_cmdlist($ebtables_cmdlist);
4324
4325 $tmpfile = "$pve_fw_status_dir/ebtablescmdlist";
4326 PVE::Tools::file_set_contents($tmpfile, $ebtables_cmdlist || '');
4327
6158271d 4328 # test: re-read status and check if everything is up to date
64e0adf4 4329 my $ruleset_filter = $ruleset->{filter};
4bd0a9c4 4330 my $active_chains = iptables_get_chains();
64e0adf4 4331 my $statushash = get_ruleset_status($ruleset_filter, $active_chains, \&iptables_chain_digest);
3fa83edf
DM		 4332
4333 my $errors;
64e0adf4 4334 foreach my $chain (sort keys %$ruleset_filter) {
3fa83edf
DM		 4335 my $stat = $statushash->{$chain};
4336 if ($stat->{action} ne 'exists') {
4337 warn "unable to update chain '$chain'\n";
4338 $errors = 1;
4339 }
4340 }
b6360c3f 4341
64e0adf4 4342 my $rulesetv6_filter = $rulesetv6->{filter};
17da5c0f 4343 my $active_chainsv6 = iptables_get_chains("ip6tables");
64e0adf4 4344 my $statushashv6 = get_ruleset_status($rulesetv6_filter, $active_chainsv6, \&iptables_chain_digest);
17da5c0f 4345
64e0adf4 4346 foreach my $chain (sort keys %$rulesetv6_filter) {
17da5c0f
AD		 4347 my $stat = $statushashv6->{$chain};
4348 if ($stat->{action} ne 'exists') {
4349 warn "unable to update chain '$chain'\n";
4350 $errors = 1;
4351 }
4352 }
4353
64e0adf4
AD		 4354 my $ruleset_raw = $ruleset->{raw};
4355 my $active_chains_raw = iptables_get_chains(undef, 'raw');
4356 my $statushash_raw = get_ruleset_status($ruleset_raw, $active_chains_raw, \&iptables_chain_digest);
4357
4358 foreach my $chain (sort keys %$ruleset_raw) {
4359 my $stat = $statushash_raw->{$chain};
4360 if ($stat->{action} ne 'exists') {
4361 warn "unable to update chain '$chain'\n";
4362 $errors = 1;
4363 }
4364 }
4365
4366 my $rulesetv6_raw = $rulesetv6->{raw};
4367 my $active_chainsv6_raw = iptables_get_chains("ip6tables", 'raw');
4368 my $statushashv6_raw = get_ruleset_status($rulesetv6_raw, $active_chainsv6_raw, \&iptables_chain_digest);
4369
4370 foreach my $chain (sort keys %$rulesetv6_raw) {
4371 my $stat = $statushashv6_raw->{$chain};
4372 if ($stat->{action} ne 'exists') {
4373 warn "unable to update chain '$chain'\n";
4374 $errors = 1;
4375 }
4376 }
4377
151c209e 4378 my $active_ebtables_chains = ebtables_get_chains();
84025e99
SI		 4379 my $ebtables_statushash = get_ruleset_status($ebtables_ruleset,
4380 $active_ebtables_chains, \&iptables_chain_digest,
40af93c4 4381 $pve_ebtables_chainname_regex);
151c209e
AD		 4382
4383 foreach my $chain (sort keys %$ebtables_ruleset) {
4384 my $stat = $ebtables_statushash->{$chain};
4385 if ($stat->{action} ne 'exists') {
4386 warn "ebtables : unable to update chain '$chain'\n";
4387 $errors = 1;
4388 }
4389 }
4390
3fa83edf 4391 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 4392
4393 update_nf_conntrack_max($hostfw_conf);
4394
4395 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
4396
ac5dd88e
AD		 4397 update_nf_conntrack_tcp_timeout_syn_recv($hostfw_conf);
4398
6c27f4f3 4399 update_nf_conntrack_logging($hostfw_conf);
b6360c3f
DM		 4400}
4401
490cdead
DM		 4402sub update_nf_conntrack_max {
4403 my ($hostfw_conf) = @_;
4404
b2ec31cc 4405 my $max = 262144; # reasonable default (2^16 * 4), see nf_conntrack-sysctl docs
490cdead
DM		 4406
4407 my $options = $hostfw_conf->{options} || {};
4408
4409 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
4410 $max = $options->{nf_conntrack_max};
4411 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
4412 }
4413
4414 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
4415 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
4416
4417 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
4418
4419 if ($current != $max) {
4420 my $hashsize = int($max/4);
4421 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
4422 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
4423 }
4424}
4425
28c082a1
AD		 4426sub update_nf_conntrack_tcp_timeout_established {
4427 my ($hostfw_conf) = @_;
4428
4429 my $options = $hostfw_conf->{options} || {};
4430
4431 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
4432
4433 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
4434}
4435
ac5dd88e
AD		 4436sub update_nf_conntrack_tcp_timeout_syn_recv {
4437 my ($hostfw_conf) = @_;
4438
4439 my $options = $hostfw_conf->{options} || {};
4440
4441 my $value = defined($options->{nf_conntrack_tcp_timeout_syn_recv}) ? $options->{nf_conntrack_tcp_timeout_syn_recev} : 60;
4442
4443 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_syn_recv", $value);
4444}
4445
6c27f4f3
DL		 4446my $log_nf_conntrack_enabled = undef;
4447sub update_nf_conntrack_logging {
4448 my ($hostfw_conf) = @_;
4449
4450 my $options = $hostfw_conf->{options} || {};
4451 my $value = $options->{log_nf_conntrack} || 0;
4452 if (!defined($log_nf_conntrack_enabled)
4453 || $value != $log_nf_conntrack_enabled)
4454 {
4455 my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack";
4456 PVE::Tools::file_set_contents($tmpfile, $value);
4457
c1031ab1 4458 run_command([qw(systemctl try-reload-or-restart pvefw-logger.service)]);
6c27f4f3
DL		 4459 $log_nf_conntrack_enabled = $value;
4460 }
4461}
4462
c4a2e5ae
DM		 4463sub remove_pvefw_chains {
4464
7b7b2654
AD		 4465 PVE::Firewall::remove_pvefw_chains_iptables("iptables");
4466 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
64e0adf4
AD		 4467 PVE::Firewall::remove_pvefw_chains_iptables("iptables", "raw");
4468 PVE::Firewall::remove_pvefw_chains_iptables("ip6tables", "raw");
7b7b2654 4469 PVE::Firewall::remove_pvefw_chains_ipset();
0e8af63d 4470 PVE::Firewall::remove_pvefw_chains_ebtables();
7b7b2654
AD		 4471
4472}
4473
4474sub remove_pvefw_chains_iptables {
64e0adf4 4475 my ($iptablescmd, $table) = @_;
7b7b2654 4476
64e0adf4
AD		 4477 $table = 'filter' if !$table;
4478
4479 my ($chash, $hooks) = iptables_get_chains($iptablescmd, $table);
4480 my $cmdlist = "*$table\n";
c4a2e5ae 4481
64e0adf4 4482 foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
c4a2e5ae
DM		 4483 if ($hooks->{$h}) {
4484 $cmdlist .= "-D $h -j PVEFW-$h\n";
4485 }
4486 }
cbb5d6f3 4487
c4a2e5ae
DM		 4488 foreach my $chain (keys %$chash) {
4489 $cmdlist .= "-F $chain\n";
4490 }
4491
4492 foreach my $chain (keys %$chash) {
4493 $cmdlist .= "-X $chain\n";
4494 }
4495 $cmdlist .= "COMMIT\n";
4496
7b7b2654 4497 if($iptablescmd eq "ip6tables") {
64e0adf4 4498 ip6tables_restore_cmdlist($cmdlist, $table);
7b7b2654 4499 } else {
64e0adf4 4500 iptables_restore_cmdlist($cmdlist, $table);
7b7b2654
AD		 4501 }
4502}
4503
4504sub remove_pvefw_chains_ipset {
55fad3b7
DM		 4505
4506 my $ipset_chains = ipset_get_chains();
4507
7b7b2654 4508 my $cmdlist = "";
75a12a9d 4509
55fad3b7 4510 foreach my $chain (keys %$ipset_chains) {
88c26d5e
DM		 4511 $cmdlist .= "flush $chain\n";
4512 $cmdlist .= "destroy $chain\n";
55fad3b7
DM		 4513 }
4514
7b7b2654 4515 ipset_restore_cmdlist($cmdlist) if $cmdlist;
c4a2e5ae
DM		 4516}
4517
0e8af63d
FG		 4518sub remove_pvefw_chains_ebtables {
4519 # apply empty ruleset = remove all our chains
4520 ebtables_restore_cmdlist(get_ebtables_cmdlist({}));
4521}
4522
8b453a09
DM		 4523sub init {
4524 my $cluster_conf = load_clusterfw_conf();
4525 my $cluster_options = $cluster_conf->{options};
4526 my $enable = $cluster_options->{enable};
4527
4528 return if !$enable;
4529
4530 # load required modules here
4531}
4532
6b9f68a2 4533sub update {
6b9f68a2 4534 my $code = sub {
3dfa8a7f
DM		 4535
4536 my $cluster_conf = load_clusterfw_conf();
4537 my $cluster_options = $cluster_conf->{options};
4538
55fad3b7 4539 if (!$cluster_options->{enable}) {
b22130d3 4540 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 4541 return;
4542 }
4543
50f9a28d 4544 my $hostfw_conf = load_hostfw_conf($cluster_conf);
3dfa8a7f 4545
c5e8b008 4546 my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 4547
151c209e 4548 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
6b9f68a2
DM		 4549 };
4550
4551 run_locked($code);
4552}
4553
b6360c3f 45541;
Firewall test scripts