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[pve-firewall.git] / src / PVE / Firewall.pm
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b6360c3f
DM		 1package PVE::Firewall;
2
3use warnings;
4use strict;
cbb5d6f3 5use POSIX;
b6360c3f 6use Data::Dumper;
09d5f68e 7use Digest::SHA;
c8301d63 8use PVE::INotify;
7ca36671 9use PVE::Exception qw(raise raise_param_exc);
e74a87f5 10use PVE::JSONSchema qw(register_standard_option get_standard_option);
c8301d63 11use PVE::Cluster;
5f0a912c 12use PVE::ProcFSTools;
009ee3ac 13use PVE::Tools qw($IPV4RE);
6b9f68a2 14use File::Basename;
5e1267a5
DM		 15use File::Path;
16use IO::File;
ecbea048 17use Net::IP;
1a301a8d 18use PVE::Tools qw(run_command lock_file dir_glob_foreach);
30c1ae52 19use Encode;
ecbea048 20
63c91681 21my $hostfw_conf_filename = "/etc/pve/local/host.fw";
fca39c2c
DM		 22my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw";
23
cbb5d6f3 24# dynamically include PVE::QemuServer and PVE::OpenVZ
d9fee004
DM		 25# to avoid dependency problems
26my $have_qemu_server;
27eval {
28 require PVE::QemuServer;
29 $have_qemu_server = 1;
30};
31
32my $have_pve_manager;
33eval {
34 require PVE::OpenVZ;
35 $have_pve_manager = 1;
36};
37
009ee3ac
DM		 38PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr);
39sub pve_verify_ipv4_or_cidr {
40 my ($cidr, $noerr) = @_;
41
30f1b100 42 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
e34d0e58 43 return $cidr if Net::IP->new($cidr);
30f1b100
DM		 44 return undef if $noerr;
45 die Net::IP::Error() . "\n";
009ee3ac
DM		 46 }
47 return undef if $noerr;
48 die "value does not look like a valid IP address or CIDR network\n";
49}
50
e74a87f5
DM		 51PVE::JSONSchema::register_standard_option('ipset-name', {
52 description => "IP set name.",
53 type => 'string',
54 pattern => '[A-Za-z][A-Za-z0-9\-\_]+',
387d0ffc 55 minLength => 2,
e34d0e58 56 maxLength => 20,
387d0ffc
DM		 57});
58
81d574a7
DM		 59PVE::JSONSchema::register_standard_option('pve-fw-alias', {
60 description => "Alias name.",
61 type => 'string',
62 pattern => '[A-Za-z][A-Za-z0-9\-\_]+',
63 minLength => 2,
e34d0e58 64 maxLength => 20,
81d574a7
DM		 65});
66
6302c41f
DM		 67PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => {
68 description => "Log level.",
e34d0e58 69 type => 'string',
6302c41f
DM		 70 enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
71 optional => 1,
72});
73
44be8ceb
DM		 74my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
75my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
c14dacdf 76
387d0ffc
DM		 77PVE::JSONSchema::register_standard_option('pve-security-group-name', {
78 description => "Security Group name.",
79 type => 'string',
44be8ceb 80 pattern => $security_group_name_pattern,
387d0ffc 81 minLength => 2,
e34d0e58 82 maxLength => 20,
e74a87f5 83});
009ee3ac 84
cbb5d6f3
DM		 85my $feature_ipset_nomatch = 0;
86eval {
87 my (undef, undef, $release) = POSIX::uname();
88 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
89 my ($major, $minor) = ($1, $2);
90 $feature_ipset_nomatch = 1 if ($major > 3) ||
91 ($major == 3 && $minor >= 7);
92 }
93
94};
95
5e1267a5 96use Data::Dumper;
b6360c3f 97
c8301d63
DM		 98my $nodename = PVE::INotify::nodename();
99
06320eb0 100my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
6b9f68a2 101my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status";
06320eb0 102
2d404ffc
DM		 103my $default_log_level = 'info';
104
105my $log_level_hash = {
106 debug => 7,
107 info => 6,
108 notice => 5,
109 warning => 4,
110 err => 3,
111 crit => 2,
112 alert => 1,
113 emerg => 0,
114};
115
857f62c8 116# imported/converted from: /usr/share/shorewall/macro.*
961b4928 117my $pve_fw_macros = {
857f62c8 118 'Amanda' => [
ebd54ae9 119 "Amanda Backup",
857f62c8
DM		 120 { action => 'PARAM', proto => 'udp', dport => '10080' },
121 { action => 'PARAM', proto => 'tcp', dport => '10080' },
122 ],
123 'Auth' => [
ebd54ae9 124 "Auth (identd) traffic",
857f62c8
DM		 125 { action => 'PARAM', proto => 'tcp', dport => '113' },
126 ],
127 'BGP' => [
ebd54ae9 128 "Border Gateway Protocol traffic",
857f62c8
DM		 129 { action => 'PARAM', proto => 'tcp', dport => '179' },
130 ],
131 'BitTorrent' => [
ebd54ae9 132 "BitTorrent traffic for BitTorrent 3.1 and earlier",
961b4928 133 { action => 'PARAM', proto => 'tcp', dport => '6881:6889' },
857f62c8
DM		 134 { action => 'PARAM', proto => 'udp', dport => '6881' },
135 ],
136 'BitTorrent32' => [
ebd54ae9 137 "BitTorrent traffic for BitTorrent 3.2 and later",
857f62c8
DM		 138 { action => 'PARAM', proto => 'tcp', dport => '6881:6999' },
139 { action => 'PARAM', proto => 'udp', dport => '6881' },
140 ],
141 'CVS' => [
ebd54ae9 142 "Concurrent Versions System pserver traffic",
857f62c8
DM		 143 { action => 'PARAM', proto => 'tcp', dport => '2401' },
144 ],
145 'Citrix' => [
ebd54ae9 146 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
857f62c8
DM		 147 { action => 'PARAM', proto => 'tcp', dport => '1494' },
148 { action => 'PARAM', proto => 'udp', dport => '1604' },
149 { action => 'PARAM', proto => 'tcp', dport => '2598' },
150 ],
151 'DAAP' => [
ebd54ae9 152 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
857f62c8
DM		 153 { action => 'PARAM', proto => 'tcp', dport => '3689' },
154 { action => 'PARAM', proto => 'udp', dport => '3689' },
155 ],
156 'DCC' => [
ebd54ae9 157 "Distributed Checksum Clearinghouse spam filtering mechanism",
857f62c8
DM		 158 { action => 'PARAM', proto => 'tcp', dport => '6277' },
159 ],
160 'DHCPfwd' => [
ebd54ae9 161 "Forwarded DHCP traffic (bidirectional)",
857f62c8
DM		 162 { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' },
163 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '67:68', sport => '67:68' },
164 ],
165 'DNS' => [
ebd54ae9 166 "Domain Name System traffic (upd and tcp)",
857f62c8
DM		 167 { action => 'PARAM', proto => 'udp', dport => '53' },
168 { action => 'PARAM', proto => 'tcp', dport => '53' },
169 ],
170 'Distcc' => [
ebd54ae9 171 "Distributed Compiler service",
857f62c8
DM		 172 { action => 'PARAM', proto => 'tcp', dport => '3632' },
173 ],
857f62c8 174 'FTP' => [
ebd54ae9 175 "File Transfer Protocol",
857f62c8
DM		 176 { action => 'PARAM', proto => 'tcp', dport => '21' },
177 ],
178 'Finger' => [
ebd54ae9 179 "Finger protocol (RFC 742)",
857f62c8
DM		 180 { action => 'PARAM', proto => 'tcp', dport => '79' },
181 ],
182 'GNUnet' => [
ebd54ae9 183 "GNUnet secure peer-to-peer networking traffic",
857f62c8
DM		 184 { action => 'PARAM', proto => 'tcp', dport => '2086' },
185 { action => 'PARAM', proto => 'udp', dport => '2086' },
186 { action => 'PARAM', proto => 'tcp', dport => '1080' },
187 { action => 'PARAM', proto => 'udp', dport => '1080' },
188 ],
189 'GRE' => [
ebd54ae9 190 "Generic Routing Encapsulation tunneling protocol (bidirectional)",
857f62c8
DM		 191 { action => 'PARAM', proto => '47' },
192 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' },
193 ],
194 'Git' => [
ebd54ae9 195 "Git distributed revision control traffic",
857f62c8
DM		 196 { action => 'PARAM', proto => 'tcp', dport => '9418' },
197 ],
857f62c8 198 'HKP' => [
ebd54ae9 199 "OpenPGP HTTP keyserver protocol traffic",
857f62c8
DM		 200 { action => 'PARAM', proto => 'tcp', dport => '11371' },
201 ],
202 'HTTP' => [
ebd54ae9 203 "Hypertext Transfer Protocol (WWW)",
961b4928
DM		 204 { action => 'PARAM', proto => 'tcp', dport => '80' },
205 ],
857f62c8 206 'HTTPS' => [
ebd54ae9 207 "Hypertext Transfer Protocol (WWW) over SSL",
857f62c8
DM		 208 { action => 'PARAM', proto => 'tcp', dport => '443' },
209 ],
210 'ICPV2' => [
ebd54ae9 211 "Internet Cache Protocol V2 (Squid) traffic",
857f62c8
DM		 212 { action => 'PARAM', proto => 'udp', dport => '3130' },
213 ],
214 'ICQ' => [
ebd54ae9 215 "AOL Instant Messenger traffic",
857f62c8
DM		 216 { action => 'PARAM', proto => 'tcp', dport => '5190' },
217 ],
218 'IMAP' => [
ebd54ae9 219 "Internet Message Access Protocol",
857f62c8
DM		 220 { action => 'PARAM', proto => 'tcp', dport => '143' },
221 ],
222 'IMAPS' => [
ebd54ae9 223 "Internet Message Access Protocol over SSL",
857f62c8
DM		 224 { action => 'PARAM', proto => 'tcp', dport => '993' },
225 ],
226 'IPIP' => [
ebd54ae9 227 "IPIP capsulation traffic (bidirectional)",
857f62c8
DM		 228 { action => 'PARAM', proto => '94' },
229 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '94' },
230 ],
857f62c8 231 'IPsec' => [
ebd54ae9 232 "IPsec traffic (bidirectional)",
857f62c8
DM		 233 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
234 { action => 'PARAM', proto => '50' },
235 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' },
236 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' },
237 ],
238 'IPsecah' => [
ebd54ae9 239 "IPsec authentication (AH) traffic (bidirectional)",
857f62c8
DM		 240 { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' },
241 { action => 'PARAM', proto => '51' },
242 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' },
243 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '51' },
244 ],
245 'IPsecnat' => [
ebd54ae9 246 "IPsec traffic and Nat-Traversal (bidirectional)",
857f62c8
DM		 247 { action => 'PARAM', proto => 'udp', dport => '500' },
248 { action => 'PARAM', proto => 'udp', dport => '4500' },
249 { action => 'PARAM', proto => '50' },
250 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500' },
251 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '4500' },
252 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' },
253 ],
254 'IRC' => [
ebd54ae9 255 "Internet Relay Chat traffic",
857f62c8
DM		 256 { action => 'PARAM', proto => 'tcp', dport => '6667' },
257 ],
857f62c8 258 'Jetdirect' => [
ebd54ae9 259 "HP Jetdirect printing",
857f62c8
DM		 260 { action => 'PARAM', proto => 'tcp', dport => '9100' },
261 ],
262 'L2TP' => [
ebd54ae9 263 "Layer 2 Tunneling Protocol traffic",
857f62c8
DM		 264 { action => 'PARAM', proto => 'udp', dport => '1701' },
265 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1701' },
266 ],
267 'LDAP' => [
ebd54ae9 268 "Lightweight Directory Access Protocol traffic",
857f62c8
DM		 269 { action => 'PARAM', proto => 'tcp', dport => '389' },
270 ],
271 'LDAPS' => [
ebd54ae9 272 "Secure Lightweight Directory Access Protocol traffic",
857f62c8
DM		 273 { action => 'PARAM', proto => 'tcp', dport => '636' },
274 ],
275 'MSNP' => [
ebd54ae9 276 "Microsoft Notification Protocol",
857f62c8
DM		 277 { action => 'PARAM', proto => 'tcp', dport => '1863' },
278 ],
279 'MSSQL' => [
ebd54ae9 280 "Microsoft SQL Server",
857f62c8
DM		 281 { action => 'PARAM', proto => 'tcp', dport => '1433' },
282 ],
283 'Mail' => [
ebd54ae9 284 "Mail traffic (SMTP, SMTPS, Submission)",
857f62c8
DM		 285 { action => 'PARAM', proto => 'tcp', dport => '25' },
286 { action => 'PARAM', proto => 'tcp', dport => '465' },
287 { action => 'PARAM', proto => 'tcp', dport => '587' },
288 ],
289 'Munin' => [
ebd54ae9 290 "Munin networked resource monitoring traffic",
857f62c8
DM		 291 { action => 'PARAM', proto => 'tcp', dport => '4949' },
292 ],
293 'MySQL' => [
ebd54ae9 294 "MySQL server",
857f62c8
DM		 295 { action => 'PARAM', proto => 'tcp', dport => '3306' },
296 ],
297 'NNTP' => [
ebd54ae9 298 "NNTP traffic (Usenet).",
857f62c8
DM		 299 { action => 'PARAM', proto => 'tcp', dport => '119' },
300 ],
301 'NNTPS' => [
ebd54ae9 302 "Encrypted NNTP traffic (Usenet)",
857f62c8
DM		 303 { action => 'PARAM', proto => 'tcp', dport => '563' },
304 ],
305 'NTP' => [
ebd54ae9 306 "Network Time Protocol (ntpd)",
857f62c8
DM		 307 { action => 'PARAM', proto => 'udp', dport => '123' },
308 ],
309 'NTPbi' => [
ebd54ae9 310 "Bi-directional NTP (for NTP peers)",
857f62c8
DM		 311 { action => 'PARAM', proto => 'udp', dport => '123' },
312 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '123' },
313 ],
857f62c8 314 'OSPF' => [
ebd54ae9 315 "OSPF multicast traffic",
857f62c8
DM		 316 { action => 'PARAM', proto => '89' },
317 ],
318 'OpenVPN' => [
ebd54ae9 319 "OpenVPN traffic",
857f62c8
DM		 320 { action => 'PARAM', proto => 'udp', dport => '1194' },
321 ],
322 'PCA' => [
ebd54ae9 323 "Symantec PCAnywere (tm)",
857f62c8
DM		 324 { action => 'PARAM', proto => 'udp', dport => '5632' },
325 { action => 'PARAM', proto => 'tcp', dport => '5631' },
326 ],
327 'POP3' => [
ebd54ae9 328 "POP3 traffic",
857f62c8
DM		 329 { action => 'PARAM', proto => 'tcp', dport => '110' },
330 ],
331 'POP3S' => [
ebd54ae9 332 "Encrypted POP3 traffic",
857f62c8
DM		 333 { action => 'PARAM', proto => 'tcp', dport => '995' },
334 ],
335 'PPtP' => [
ebd54ae9 336 "Point-to-Point Tunneling Protocol",
857f62c8
DM		 337 { action => 'PARAM', proto => '47' },
338 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' },
339 { action => 'PARAM', proto => 'tcp', dport => '1723' },
340 ],
341 'Ping' => [
ebd54ae9 342 "ICMP echo request",
269d4f13 343 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 344 ],
345 'PostgreSQL' => [
ebd54ae9 346 "PostgreSQL server",
857f62c8
DM		 347 { action => 'PARAM', proto => 'tcp', dport => '5432' },
348 ],
349 'Printer' => [
ebd54ae9 350 "Line Printer protocol printing",
857f62c8
DM		 351 { action => 'PARAM', proto => 'tcp', dport => '515' },
352 ],
353 'RDP' => [
ebd54ae9 354 "Microsoft Remote Desktop Protocol traffic",
857f62c8
DM		 355 { action => 'PARAM', proto => 'tcp', dport => '3389' },
356 ],
357 'RIPbi' => [
ebd54ae9 358 "Routing Information Protocol (bidirectional)",
857f62c8
DM		 359 { action => 'PARAM', proto => 'udp', dport => '520' },
360 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '520' },
361 ],
362 'RNDC' => [
ebd54ae9 363 "BIND remote management protocol",
857f62c8
DM		 364 { action => 'PARAM', proto => 'tcp', dport => '953' },
365 ],
366 'Razor' => [
ebd54ae9 367 "Razor Antispam System",
857f62c8
DM		 368 { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
369 ],
370 'Rdate' => [
ebd54ae9 371 "Remote time retrieval (rdate)",
857f62c8
DM		 372 { action => 'PARAM', proto => 'tcp', dport => '37' },
373 ],
374 'Rsync' => [
ebd54ae9 375 "Rsync server",
857f62c8
DM		 376 { action => 'PARAM', proto => 'tcp', dport => '873' },
377 ],
378 'SANE' => [
ebd54ae9 379 "SANE network scanning",
857f62c8
DM		 380 { action => 'PARAM', proto => 'tcp', dport => '6566' },
381 ],
382 'SMB' => [
ebd54ae9 383 "Microsoft SMB traffic",
857f62c8
DM		 384 { action => 'PARAM', proto => 'udp', dport => '135,445' },
385 { action => 'PARAM', proto => 'udp', dport => '137:139' },
386 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
387 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
388 ],
389 'SMBBI' => [
ebd54ae9 390 "Microsoft SMB traffic (bidirectional)",
857f62c8
DM		 391 { action => 'PARAM', proto => 'udp', dport => '135,445' },
392 { action => 'PARAM', proto => 'udp', dport => '137:139' },
393 { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' },
394 { action => 'PARAM', proto => 'tcp', dport => '135,139,445' },
395 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '135,445' },
396 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '137:139' },
397 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1024:65535', sport => '137' },
398 { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'tcp', dport => '135,139,445' },
399 ],
400 'SMBswat' => [
ebd54ae9 401 "Samba Web Administration Tool",
857f62c8
DM		 402 { action => 'PARAM', proto => 'tcp', dport => '901' },
403 ],
404 'SMTP' => [
ebd54ae9 405 "Simple Mail Transfer Protocol",
857f62c8
DM		 406 { action => 'PARAM', proto => 'tcp', dport => '25' },
407 ],
408 'SMTPS' => [
ebd54ae9 409 "Encrypted Simple Mail Transfer Protocol",
857f62c8
DM		 410 { action => 'PARAM', proto => 'tcp', dport => '465' },
411 ],
412 'SNMP' => [
ebd54ae9 413 "Simple Network Management Protocol",
857f62c8
DM		 414 { action => 'PARAM', proto => 'udp', dport => '161:162' },
415 { action => 'PARAM', proto => 'tcp', dport => '161' },
416 ],
417 'SPAMD' => [
ebd54ae9 418 "Spam Assassin SPAMD traffic",
857f62c8
DM		 419 { action => 'PARAM', proto => 'tcp', dport => '783' },
420 ],
421 'SSH' => [
ebd54ae9 422 "Secure shell traffic",
857f62c8
DM		 423 { action => 'PARAM', proto => 'tcp', dport => '22' },
424 ],
425 'SVN' => [
ebd54ae9 426 "Subversion server (svnserve)",
857f62c8
DM		 427 { action => 'PARAM', proto => 'tcp', dport => '3690' },
428 ],
429 'SixXS' => [
ebd54ae9 430 "SixXS IPv6 Deployment and Tunnel Broker",
857f62c8
DM		 431 { action => 'PARAM', proto => 'tcp', dport => '3874' },
432 { action => 'PARAM', proto => 'udp', dport => '3740' },
433 { action => 'PARAM', proto => '41' },
434 { action => 'PARAM', proto => 'udp', dport => '5072,8374' },
435 ],
436 'Squid' => [
ebd54ae9 437 "Squid web proxy traffic",
857f62c8
DM		 438 { action => 'PARAM', proto => 'tcp', dport => '3128' },
439 ],
440 'Submission' => [
ebd54ae9 441 "Mail message submission traffic",
857f62c8
DM		 442 { action => 'PARAM', proto => 'tcp', dport => '587' },
443 ],
444 'Syslog' => [
ebd54ae9 445 "Syslog protocol (RFC 5424) traffic",
857f62c8
DM		 446 { action => 'PARAM', proto => 'udp', dport => '514' },
447 { action => 'PARAM', proto => 'tcp', dport => '514' },
448 ],
449 'TFTP' => [
ebd54ae9 450 "Trivial File Transfer Protocol traffic",
857f62c8
DM		 451 { action => 'PARAM', proto => 'udp', dport => '69' },
452 ],
453 'Telnet' => [
ebd54ae9 454 "Telnet traffic",
857f62c8
DM		 455 { action => 'PARAM', proto => 'tcp', dport => '23' },
456 ],
457 'Telnets' => [
ebd54ae9 458 "Telnet over SSL",
857f62c8
DM		 459 { action => 'PARAM', proto => 'tcp', dport => '992' },
460 ],
461 'Time' => [
ebd54ae9 462 "RFC 868 Time protocol",
857f62c8
DM		 463 { action => 'PARAM', proto => 'tcp', dport => '37' },
464 ],
465 'Trcrt' => [
ebd54ae9 466 "Traceroute (for up to 30 hops) traffic",
857f62c8 467 { action => 'PARAM', proto => 'udp', dport => '33434:33524' },
269d4f13 468 { action => 'PARAM', proto => 'icmp', dport => 'echo-request' },
857f62c8
DM		 469 ],
470 'VNC' => [
ebd54ae9 471 "VNC traffic for VNC display's 0 - 9",
857f62c8
DM		 472 { action => 'PARAM', proto => 'tcp', dport => '5900:5909' },
473 ],
474 'VNCL' => [
ebd54ae9 475 "VNC traffic from Vncservers to Vncviewers in listen mode",
857f62c8
DM		 476 { action => 'PARAM', proto => 'tcp', dport => '5500' },
477 ],
478 'Web' => [
ebd54ae9 479 "WWW traffic (HTTP and HTTPS)",
857f62c8 480 { action => 'PARAM', proto => 'tcp', dport => '80' },
961b4928
DM		 481 { action => 'PARAM', proto => 'tcp', dport => '443' },
482 ],
857f62c8 483 'Webcache' => [
ebd54ae9 484 "Web Cache/Proxy traffic (port 8080)",
857f62c8
DM		 485 { action => 'PARAM', proto => 'tcp', dport => '8080' },
486 ],
487 'Webmin' => [
ebd54ae9 488 "Webmin traffic",
857f62c8
DM		 489 { action => 'PARAM', proto => 'tcp', dport => '10000' },
490 ],
491 'Whois' => [
ebd54ae9 492 "Whois (nicname, RFC 3912) traffic",
857f62c8
DM		 493 { action => 'PARAM', proto => 'tcp', dport => '43' },
494 ],
961b4928
DM		 495};
496
497my $pve_fw_parsed_macros;
ebd54ae9 498my $pve_fw_macro_descr;
961b4928 499my $pve_fw_preferred_macro_names = {};
3a616aa0 500
d8f2505e
DM		 501my $pve_std_chains = {
502 'PVEFW-SET-ACCEPT-MARK' => [
503 "-j MARK --set-mark 1",
504 ],
79929d9c
DM		 505 'PVEFW-DropBroadcast' => [
506 # same as shorewall 'Broadcast'
507 # simply DROP BROADCAST/MULTICAST/ANYCAST
508 # we can use this to reduce logging
509 { action => 'DROP', dsttype => 'BROADCAST' },
510 { action => 'DROP', dsttype => 'MULTICAST' },
511 { action => 'DROP', dsttype => 'ANYCAST' },
cbb5d6f3 512 { action => 'DROP', dest => '224.0.0.0/4' },
79929d9c
DM		 513 ],
514 'PVEFW-reject' => [
515 # same as shorewall 'reject'
516 { action => 'DROP', dsttype => 'BROADCAST' },
cbb5d6f3 517 { action => 'DROP', source => '224.0.0.0/4' },
79929d9c
DM		 518 { action => 'DROP', proto => 'icmp' },
519 "-p tcp -j REJECT --reject-with tcp-reset",
520 "-p udp -j REJECT --reject-with icmp-port-unreachable",
521 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
522 "-j REJECT --reject-with icmp-host-prohibited",
523 ],
524 'PVEFW-Drop' => [
cbb5d6f3 525 # same as shorewall 'Drop', which is equal to DROP,
79929d9c
DM		 526 # but REJECT/DROP some packages to reduce logging,
527 # and ACCEPT critical ICMP types
528 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
529 # we are not interested in BROADCAST/MULTICAST/ANYCAST
530 { action => 'PVEFW-DropBroadcast' },
531 # ACCEPT critical ICMP types
532 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
533 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
534 # Drop packets with INVALID state
535 "-m conntrack --ctstate INVALID -j DROP",
536 # Drop Microsoft SMB noise
537 { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
538 { action => 'DROP', proto => 'udp', dport => '137:139'},
539 { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
540 { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
541 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
542 # Drop new/NotSyn traffic so that it doesn't get logged
543 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
544 # Drop DNS replies
545 { action => 'DROP', proto => 'udp', sport => 53 },
546 ],
547 'PVEFW-Reject' => [
cbb5d6f3 548 # same as shorewall 'Reject', which is equal to Reject,
79929d9c
DM		 549 # but REJECT/DROP some packages to reduce logging,
550 # and ACCEPT critical ICMP types
551 { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
552 # we are not interested in BROADCAST/MULTICAST/ANYCAST
553 { action => 'PVEFW-DropBroadcast' },
554 # ACCEPT critical ICMP types
555 { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' },
556 { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' },
557 # Drop packets with INVALID state
558 "-m conntrack --ctstate INVALID -j DROP",
559 # Drop Microsoft SMB noise
560 { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 },
561 { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'},
562 { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 },
563 { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
564 { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
565 # Drop new/NotSyn traffic so that it doesn't get logged
566 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
567 # Drop DNS replies
568 { action => 'DROP', proto => 'udp', sport => 53 },
569 ],
d86659ef
DM		 570 'PVEFW-tcpflags' => [
571 # same as shorewall tcpflags action.
572 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
573 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
574 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
575 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
576 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
577 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
578 ],
bee633ab
DM		 579 'PVEFW-smurfs' => [
580 # same as shorewall smurfs action
581 # Filter packets for smurfs (packets with a broadcast address as the source).
582 "-s 0.0.0.0/32 -j RETURN",
583 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
584 "-s 224.0.0.0/4 -g PVEFW-smurflog",
585 ],
d8f2505e
DM		 586};
587
4b586518
DM		 588# iptables -p icmp -h
589my $icmp_type_names = {
590 any => 1,
591 'echo-reply' => 1,
592 'destination-unreachable' => 1,
593 'network-unreachable' => 1,
594 'host-unreachable' => 1,
595 'protocol-unreachable' => 1,
596 'port-unreachable' => 1,
597 'fragmentation-needed' => 1,
598 'source-route-failed' => 1,
599 'network-unknown' => 1,
600 'host-unknown' => 1,
601 'network-prohibited' => 1,
602 'host-prohibited' => 1,
603 'TOS-network-unreachable' => 1,
604 'TOS-host-unreachable' => 1,
605 'communication-prohibited' => 1,
606 'host-precedence-violation' => 1,
607 'precedence-cutoff' => 1,
608 'source-quench' => 1,
609 'redirect' => 1,
610 'network-redirect' => 1,
611 'host-redirect' => 1,
612 'TOS-network-redirect' => 1,
613 'TOS-host-redirect' => 1,
614 'echo-request' => 1,
615 'router-advertisement' => 1,
616 'router-solicitation' => 1,
617 'time-exceeded' => 1,
618 'ttl-zero-during-transit' => 1,
619 'ttl-zero-during-reassembly' => 1,
620 'parameter-problem' => 1,
621 'ip-header-bad' => 1,
622 'required-option-missing' => 1,
623 'timestamp-request' => 1,
624 'timestamp-reply' => 1,
625 'address-mask-request' => 1,
626 'address-mask-reply' => 1,
627};
628
54cd19a8 629sub init_firewall_macros {
6158271d 630
961b4928 631 $pve_fw_parsed_macros = {};
9aab3127 632
961b4928 633 foreach my $k (keys %$pve_fw_macros) {
e5076eee
DM		 634 my $lc_name = lc($k);
635 my $macro = $pve_fw_macros->{$k};
ebd54ae9
DM		 636 if (!ref($macro->[0])) {
637 $pve_fw_macro_descr->{$k} = shift @$macro;
638 }
e5076eee
DM		 639 $pve_fw_preferred_macro_names->{$lc_name} = $k;
640 $pve_fw_parsed_macros->{$k} = $macro;
961b4928 641 }
9aab3127
DM		 642}
643
54cd19a8
DM		 644init_firewall_macros();
645
ebd54ae9
DM		 646sub get_macros {
647 return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
648}
649
fcba0beb
DM		 650my $etc_services;
651
652sub get_etc_services {
653
654 return $etc_services if $etc_services;
655
656 my $filename = "/etc/services";
657
658 my $fh = IO::File->new($filename, O_RDONLY);
659 if (!$fh) {
660 warn "unable to read '$filename' - $!\n";
661 return {};
662 }
663
664 my $services = {};
665
666 while (my $line = <$fh>) {
667 chomp ($line);
668 next if $line =~m/^#/;
669 next if ($line =~m/^\s*$/);
670
671 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
672 $services->{byid}->{$2}->{name} = $1;
35b66e9d 673 $services->{byid}->{$2}->{port} = $2;
fcba0beb
DM		 674 $services->{byid}->{$2}->{$3} = 1;
675 $services->{byname}->{$1} = $services->{byid}->{$2};
676 }
677 }
678
679 close($fh);
680
6158271d
DM		 681 $etc_services = $services;
682
3a616aa0 683
fcba0beb
DM		 684 return $etc_services;
685}
686
687my $etc_protocols;
688
689sub get_etc_protocols {
690 return $etc_protocols if $etc_protocols;
691
692 my $filename = "/etc/protocols";
693
694 my $fh = IO::File->new($filename, O_RDONLY);
695 if (!$fh) {
696 warn "unable to read '$filename' - $!\n";
697 return {};
698 }
699
700 my $protocols = {};
701
702 while (my $line = <$fh>) {
703 chomp ($line);
704 next if $line =~m/^#/;
705 next if ($line =~m/^\s*$/);
706
707 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
708 $protocols->{byid}->{$2}->{name} = $1;
709 $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
710 }
711 }
712
713 close($fh);
714
715 $etc_protocols = $protocols;
716
717 return $etc_protocols;
718}
719
ecbea048
DM		 720sub parse_address_list {
721 my ($str) = @_;
722
28311400 723 return if $str =~ m/^(\+)(\S+)$/; # ipset ref
44be8ceb 724 return if $str =~ m/^${ip_alias_pattern}$/;
d72beb8e 725
3162af6b
DM		 726 my $count = 0;
727 my $iprange = 0;
728 foreach my $elem (split(/,/, $str)) {
729 $count++;
730 if (!Net::IP->new($elem)) {
ecbea048
DM		 731 my $err = Net::IP::Error();
732 die "invalid IP address: $err\n";
733 }
3162af6b 734 $iprange = 1 if $elem =~ m/-/;
ecbea048 735 }
e34d0e58 736
3162af6b 737 die "you can use a range in a list\n" if $iprange && $count > 1;
ecbea048 738}
dddd9413 739
fcba0beb
DM		 740sub parse_port_name_number_or_range {
741 my ($str) = @_;
742
743 my $services = PVE::Firewall::get_etc_services();
7ca36671 744 my $count = 0;
041b7e8e
DM		 745 my $icmp_port = 0;
746
fcba0beb 747 foreach my $item (split(/,/, $str)) {
7ca36671
DM		 748 $count++;
749 if ($item =~ m/^(\d+):(\d+)$/) {
750 my ($port1, $port2) = ($1, $2);
751 die "invalid port '$port1'\n" if $port1 > 65535;
752 die "invalid port '$port2'\n" if $port2 > 65535;
753 } elsif ($item =~ m/^(\d+)$/) {
754 my $port = $1;
755 die "invalid port '$port'\n" if $port > 65535;
756 } else {
041b7e8e
DM		 757 if ($icmp_type_names->{$item}) {
758 $icmp_port = 1;
759 } else {
e34d0e58 760 die "invalid port '$item'\n" if !$services->{byname}->{$item};
041b7e8e 761 }
fcba0beb
DM		 762 }
763 }
764
041b7e8e
DM		 765 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
766
7ca36671 767 return $count;
fcba0beb
DM		 768}
769
54cd19a8
DM		 770PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
771sub pve_fw_verify_port_spec {
772 my ($portstr) = @_;
773
7ca36671 774 parse_port_name_number_or_range($portstr);
54cd19a8
DM		 775
776 return $portstr;
777}
778
779PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec);
780sub pve_fw_verify_v4addr_spec {
781 my ($list) = @_;
782
783 parse_address_list($list);
784
785 return $list;
786}
787
788PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec);
789sub pve_fw_verify_protocol_spec {
790 my ($proto) = @_;
791
792 my $protocols = get_etc_protocols();
793
794 die "unknown protocol '$proto'\n" if $proto &&
795 !(defined($protocols->{byname}->{$proto}) ||
796 defined($protocols->{byid}->{$proto}));
797
798 return $proto;
799}
800
801
d1c53b3e 802# helper function for API
d1c53b3e 803
5d38d64f
DM		 804sub copy_opject_with_digest {
805 my ($object) = @_;
806
807 my $sha = Digest::SHA->new('sha1');
808
809 my $res = {};
810 foreach my $k (sort keys %$object) {
811 my $v = $object->{$k};
0365eb68 812 next if !defined($v);
5d38d64f
DM		 813 $res->{$k} = $v;
814 $sha->add($k, ':', $v, "\n");
815 }
816
55e686c7 817 my $digest = $sha->hexdigest;
5d38d64f
DM		 818
819 $res->{digest} = $digest;
820
821 return wantarray ? ($res, $digest) : $res;
822}
823
824sub copy_list_with_digest {
825 my ($list) = @_;
826
827 my $sha = Digest::SHA->new('sha1');
828
829 my $res = [];
830 foreach my $entry (@$list) {
831 my $data = {};
832 foreach my $k (sort keys %$entry) {
833 my $v = $entry->{$k};
0365eb68 834 next if !defined($v);
5d38d64f
DM		 835 $data->{$k} = $v;
836 $sha->add($k, ':', $v, "\n");
837 }
838 push @$res, $data;
839 }
840
55e686c7 841 my $digest = $sha->hexdigest;
5d38d64f
DM		 842
843 foreach my $entry (@$res) {
844 $entry->{digest} = $digest;
845 }
846
847 return wantarray ? ($res, $digest) : $res;
848}
849
9c7e0858
DM		 850my $rule_properties = {
851 pos => {
852 description => "Update rule at position <pos>.",
853 type => 'integer',
854 minimum => 0,
855 optional => 1,
856 },
c71e785f 857 digest => get_standard_option('pve-config-digest'),
9c7e0858
DM		 858 type => {
859 type => 'string',
860 optional => 1,
861 enum => ['in', 'out', 'group'],
862 },
863 action => {
c14dacdf 864 description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
9c7e0858
DM		 865 type => 'string',
866 optional => 1,
44be8ceb 867 pattern => $security_group_name_pattern,
c14dacdf
DM		 868 maxLength => 20,
869 minLength => 2,
9c7e0858 870 },
e5076eee
DM		 871 macro => {
872 type => 'string',
873 optional => 1,
54cd19a8 874 maxLength => 128,
e5076eee 875 },
54cd19a8 876 iface => get_standard_option('pve-iface', { optional => 1 }),
9c7e0858 877 source => {
54cd19a8 878 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 879 optional => 1,
880 },
881 dest => {
54cd19a8 882 type => 'string', format => 'pve-fw-v4addr-spec',
9c7e0858
DM		 883 optional => 1,
884 },
885 proto => {
54cd19a8 886 type => 'string', format => 'pve-fw-protocol-spec',
9c7e0858
DM		 887 optional => 1,
888 },
889 enable => {
890 type => 'boolean',
891 optional => 1,
892 },
893 sport => {
54cd19a8 894 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 895 optional => 1,
896 },
897 dport => {
54cd19a8 898 type => 'string', format => 'pve-fw-port-spec',
9c7e0858
DM		 899 optional => 1,
900 },
901 comment => {
902 type => 'string',
903 optional => 1,
904 },
905};
906
907sub add_rule_properties {
908 my ($properties) = @_;
909
910 foreach my $k (keys %$rule_properties) {
3655b01f
DM		 911 my $h = $rule_properties->{$k};
912 # copy data, so that we can modify later without side effects
913 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
9c7e0858 914 }
cbb5d6f3 915
9c7e0858
DM		 916 return $properties;
917}
918
5b7974df
DM		 919sub delete_rule_properties {
920 my ($rule, $delete_str) = @_;
e34d0e58 921
5b7974df
DM		 922 foreach my $opt (PVE::Tools::split_list($delete_str)) {
923 raise_param_exc({ 'delete' => "no such property ('$opt')"})
924 if !defined($rule_properties->{$opt});
925 raise_param_exc({ 'delete' => "unable to delete required property '$opt'"})
926 if $opt eq 'type' || $opt eq 'action';
927 delete $rule->{$opt};
928 }
929
930 return $rule;
931}
932
9a2745a0
DM		 933my $apply_macro = sub {
934 my ($macro_name, $param, $verify) = @_;
935
936 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
937 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
938
939 my $rules = [];
940
941 foreach my $templ (@$macro_rules) {
942 my $rule = {};
943 my $param_used = {};
944 foreach my $k (keys %$templ) {
945 my $v = $templ->{$k};
946 if ($v eq 'PARAM') {
947 $v = $param->{$k};
948 $param_used->{$k} = 1;
949 } elsif ($v eq 'DEST') {
950 $v = $param->{dest};
951 $param_used->{dest} = 1;
952 } elsif ($v eq 'SOURCE') {
953 $v = $param->{source};
954 $param_used->{source} = 1;
955 }
956
957 if (!defined($v)) {
958 my $msg = "missing parameter '$k' in macro '$macro_name'";
e34d0e58 959 raise_param_exc({ macro => $msg }) if $verify;
9a2745a0
DM		 960 die "$msg\n";
961 }
962 $rule->{$k} = $v;
963 }
964 foreach my $k (keys %$param) {
965 next if $k eq 'macro';
966 next if !defined($param->{$k});
967 next if $param_used->{$k};
968 if (defined($rule->{$k})) {
969 if ($rule->{$k} ne $param->{$k}) {
970 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
e34d0e58 971 raise_param_exc({ $k => $msg }) if $verify;
9a2745a0
DM		 972 die "$msg\n";
973 }
974 } else {
975 $rule->{$k} = $param->{$k};
976 }
977 }
978 push @$rules, $rule;
979 }
980
981 return $rules;
982};
983
7ca36671
DM		 984sub verify_rule {
985 my ($rule, $allow_groups) = @_;
986
987 my $type = $rule->{type};
988
989 raise_param_exc({ type => "missing property"}) if !$type;
990 raise_param_exc({ action => "missing property"}) if !$rule->{action};
e34d0e58 991
7ca36671
DM		 992 if ($type eq 'in' || $type eq 'out') {
993 raise_param_exc({ action => "unknown action '$rule->{action}'"})
994 if $rule->{action} !~ m/^(ACCEPT|DROP|REJECT)$/;
995 } elsif ($type eq 'group') {
e34d0e58 996 raise_param_exc({ type => "security groups not allowed"})
7ca36671 997 if !$allow_groups;
e34d0e58 998 raise_param_exc({ action => "invalid characters in security group name"})
44be8ceb 999 if $rule->{action} !~ m/^${security_group_name_pattern}$/;
7ca36671
DM		 1000 } else {
1001 raise_param_exc({ type => "unknown rule type '$type'"});
1002 }
e34d0e58 1003
7ca36671
DM		 1004 # fixme: verify $rule->{iface}?
1005
1006 if ($rule->{macro}) {
1007 my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})};
1008 raise_param_exc({ macro => "unknown macro '$rule->{macro}'"}) if !$preferred_name;
1009 $rule->{macro} = $preferred_name;
1010 }
1011
1012 if ($rule->{dport}) {
1013 eval { parse_port_name_number_or_range($rule->{dport}); };
1014 raise_param_exc({ dport => $@ }) if $@;
1015 }
1016
1017 if ($rule->{sport}) {
1018 eval { parse_port_name_number_or_range($rule->{sport}); };
1019 raise_param_exc({ sport => $@ }) if $@;
1020 }
1021
1022 if ($rule->{source}) {
1023 eval { parse_address_list($rule->{source}); };
1024 raise_param_exc({ source => $@ }) if $@;
1025 }
1026
1027 if ($rule->{dest}) {
1028 eval { parse_address_list($rule->{dest}); };
1029 raise_param_exc({ dest => $@ }) if $@;
1030 }
1031
9a2745a0
DM		 1032 if ($rule->{macro}) {
1033 &$apply_macro($rule->{macro}, $rule, 1);
1034 }
1035
7ca36671
DM		 1036 return $rule;
1037}
1038
9c7e0858
DM		 1039sub copy_rule_data {
1040 my ($rule, $param) = @_;
1041
1042 foreach my $k (keys %$rule_properties) {
1043 if (defined(my $v = $param->{$k})) {
1044 if ($v eq '' || $v eq '-') {
1045 delete $rule->{$k};
1046 } else {
1047 $rule->{$k} = $v;
1048 }
1049 } else {
1050 delete $rule->{$k};
1051 }
1052 }
7ca36671
DM		 1053
1054 # verify rule now
1055
9c7e0858
DM		 1056 return $rule;
1057}
1058
1059# core functions
780bcc0f
DM		 1060my $bridge_firewall_enabled = 0;
1061
1062sub enable_bridge_firewall {
1063
1064 return if $bridge_firewall_enabled; # only once
1065
5f0a912c
DM		 1066 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1067 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
780bcc0f 1068
6a8a75db
DM		 1069 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1070 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
1071
780bcc0f
DM		 1072 $bridge_firewall_enabled = 1;
1073}
1074
8cebfa6f 1075my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
dddd9413 1076
b16e818e
DM		 1077sub iptables_restore_cmdlist {
1078 my ($cmdlist) = @_;
3a616aa0 1079
3fa83edf 1080 run_command("/sbin/iptables-restore -n", input => $cmdlist);
3a616aa0
AD		 1081}
1082
34cdedfa
AD		 1083sub ipset_restore_cmdlist {
1084 my ($cmdlist) = @_;
1085
dd7a13fd 1086 run_command("/usr/sbin/ipset restore", input => $cmdlist);
34cdedfa
AD		 1087}
1088
de2a57cd
DM		 1089sub iptables_get_chains {
1090
1091 my $res = {};
1092
1093 # check what chains we want to track
1094 my $is_pvefw_chain = sub {
1095 my $name = shift;
1096
dec84fcd
DM		 1097 return 1 if $name =~ m/^PVEFW-\S+$/;
1098
de2a57cd 1099 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
954f24b1
DM		 1100
1101 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1102
9e15114a
DM		 1103 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1104
a01c32c7 1105 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
f50656c2 1106 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
de2a57cd
DM		 1107
1108 return undef;
1109 };
1110
1111 my $table = '';
1112
c4a2e5ae
DM		 1113 my $hooks = {};
1114
de2a57cd
DM		 1115 my $parser = sub {
1116 my $line = shift;
1117
1118 return if $line =~ m/^#/;
1119 return if $line =~ m/^\s*$/;
1120
1121 if ($line =~ m/^\*(\S+)$/) {
1122 $table = $1;
1123 return;
1124 }
1125
1126 return if $table ne 'filter';
1127
1128 if ($line =~ m/^:(\S+)\s/) {
1129 my $chain = $1;
1130 return if !&$is_pvefw_chain($chain);
3fa83edf 1131 $res->{$chain} = "unknown";
09d5f68e 1132 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
3fa83edf 1133 my ($chain, $sig) = ($1, $2);
de2a57cd 1134 return if !&$is_pvefw_chain($chain);
3fa83edf 1135 $res->{$chain} = $sig;
c4a2e5ae
DM		 1136 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1137 $hooks->{$1} = 1;
de2a57cd
DM		 1138 } else {
1139 # simply ignore the rest
1140 return;
1141 }
1142 };
1143
1144 run_command("/sbin/iptables-save", outfunc => $parser);
1145
c4a2e5ae 1146 return wantarray ? ($res, $hooks) : $res;
de2a57cd
DM		 1147}
1148
9bf7d929
DM		 1149sub iptables_chain_digest {
1150 my ($rules) = @_;
1151 my $digest = Digest::SHA->new('sha1');
1152 foreach my $rule (@$rules) { # order is important
1153 $digest->add($rule);
1154 }
1155 return $digest->b64digest;
1156}
1157
3f95d14a
DM		 1158sub ipset_chain_digest {
1159 my ($rules) = @_;
4bd0a9c4 1160
3f95d14a
DM		 1161 my $digest = Digest::SHA->new('sha1');
1162 foreach my $rule (sort @$rules) { # note: sorted
1163 $digest->add($rule);
1164 }
1165 return $digest->b64digest;
1166}
1167
34cdedfa
AD		 1168sub ipset_get_chains {
1169
1170 my $res = {};
1171 my $chains = {};
1172
1173 my $parser = sub {
1174 my $line = shift;
1175
1176 return if $line =~ m/^#/;
1177 return if $line =~ m/^\s*$/;
4b96e877 1178 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
81a0bf43
DM		 1179 my $chain = $1;
1180 $line =~ s/\s+$//; # delete trailing white space
1181 push @{$chains->{$chain}}, $line;
34cdedfa
AD		 1182 } else {
1183 # simply ignore the rest
1184 return;
1185 }
1186 };
1187
3f95d14a 1188 run_command("/usr/sbin/ipset save", outfunc => $parser);
34cdedfa 1189
3f95d14a
DM		 1190 # compute digest for each chain
1191 foreach my $chain (keys %$chains) {
1192 $res->{$chain} = ipset_chain_digest($chains->{$chain});
34cdedfa
AD		 1193 }
1194
1195 return $res;
1196}
1197
eba0fb64 1198sub ruleset_generate_cmdstr {
ba791b1f 1199 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
3a616aa0 1200
00bb4391 1201 return if defined($rule->{enable}) && !$rule->{enable};
11bac5c2 1202
e5076eee
DM		 1203 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1204
1205 my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
1206 my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
e5076eee 1207
41524a58 1208 my @cmd = ();
3a616aa0 1209
eba0fb64
DM		 1210 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in};
1211 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out};
1212
ba791b1f
AD		 1213 my $source = $rule->{source};
1214 my $dest = $rule->{dest};
1215
cbb5d6f3 1216 if ($source) {
44be8ceb
DM		 1217 if ($source =~ m/^\+/) {
1218 if ($source =~ m/^\+(${security_group_name_pattern})$/) {
1219 die "no such ipset '$1'\n" if !$cluster_conf->{ipset}->{$1};
1220 push @cmd, "-m set --match-set PVEFW-$1 src";
1221 } else {
1222 die "invalid security group name '$source'\n";
1223 }
1224 } elsif ($source =~ m/^${ip_alias_pattern}$/){
81d574a7
DM		 1225 my $alias = lc($source);
1226 my $e = $cluster_conf->{aliases}->{$alias};
1227 die "no such alias $source\n" if !$e;
1228 push @cmd, "-s $e->{cidr}";
ac8242cc 1229 } elsif ($source =~ m/\-/){
ba791b1f
AD		 1230 push @cmd, "-m iprange --src-range $source";
1231
cbb5d6f3 1232 } else {
ba791b1f
AD		 1233 push @cmd, "-s $source";
1234 }
1235 }
1236
cbb5d6f3 1237 if ($dest) {
44be8ceb
DM		 1238 if ($dest =~ m/^\+/) {
1239 if ($dest =~ m/^\+(${security_group_name_pattern})$/) {
1240 die "no such ipset '$1'\n" if !$cluster_conf->{ipset}->{$1};
1241 push @cmd, "-m set --match-set PVEFW-$1 dst";
1242 } else {
1243 die "invalid security group name '$dest'\n";
1244 }
1245 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
81d574a7
DM		 1246 my $alias = lc($source);
1247 my $e = $cluster_conf->{aliases}->{$alias};
1248 die "no such alias $dest" if !$e;
1249 push @cmd, "-d $e->{cidr}";
cbb5d6f3 1250 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
ba791b1f
AD		 1251 push @cmd, "-m iprange --dst-range $dest";
1252
cbb5d6f3 1253 } else {
d6d2a385 1254 push @cmd, "-d $dest";
ba791b1f
AD		 1255 }
1256 }
4b586518 1257
181390b0 1258 if ($rule->{proto}) {
41524a58 1259 push @cmd, "-p $rule->{proto}";
e3a1d391 1260
181390b0 1261 my $multiport = 0;
e5076eee
DM		 1262 $multiport++ if $nbdport > 1;
1263 $multiport++ if $nbsport > 1;
e3a1d391 1264
41524a58 1265 push @cmd, "--match multiport" if $multiport;
4b586518 1266
cbb5d6f3 1267 die "multiport: option '--sports' cannot be used together with '--dports'\n"
181390b0
DM		 1268 if ($multiport == 2) && ($rule->{dport} ne $rule->{sport});
1269
1270 if ($rule->{dport}) {
1271 if ($rule->{proto} && $rule->{proto} eq 'icmp') {
1272 # Note: we use dport to store --icmp-type
1273 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
41524a58 1274 push @cmd, "-m icmp --icmp-type $rule->{dport}";
181390b0 1275 } else {
e5076eee 1276 if ($nbdport > 1) {
181390b0 1277 if ($multiport == 2) {
41524a58 1278 push @cmd, "--ports $rule->{dport}";
181390b0 1279 } else {
41524a58 1280 push @cmd, "--dports $rule->{dport}";
181390b0 1281 }
e3a1d391 1282 } else {
41524a58 1283 push @cmd, "--dport $rule->{dport}";
e3a1d391 1284 }
4b586518
DM		 1285 }
1286 }
4b586518 1287
181390b0 1288 if ($rule->{sport}) {
e5076eee 1289 if ($nbsport > 1) {
41524a58 1290 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
181390b0 1291 } else {
41524a58 1292 push @cmd, "--sport $rule->{sport}";
181390b0 1293 }
4b586518 1294 }
181390b0
DM		 1295 } elsif ($rule->{dport} || $rule->{sport}) {
1296 warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport};
1297 warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport};
4b586518
DM		 1298 }
1299
41524a58 1300 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype};
4e6112f9
DM		 1301
1302 if (my $action = $rule->{action}) {
cbb5d6f3 1303 $action = $actions->{$action} if defined($actions->{$action});
4e6112f9 1304 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
41524a58 1305 push @cmd, $goto ? "-g $action" : "-j $action";
181390b0 1306 }
3a616aa0 1307
eba0fb64
DM		 1308 return scalar(@cmd) ? join(' ', @cmd) : undef;
1309}
1310
1311sub ruleset_generate_rule {
ba791b1f 1312 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
eba0fb64 1313
e5076eee
DM		 1314 my $rules;
1315
1316 if ($rule->{macro}) {
1317 $rules = &$apply_macro($rule->{macro}, $rule);
1318 } else {
1319 $rules = [ $rule ];
1320 }
1321
d4091b82
DM		 1322 # update all or nothing
1323
1324 my @cmds = ();
cbb5d6f3 1325 foreach my $tmp (@$rules) {
ba791b1f 1326 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) {
d4091b82 1327 push @cmds, $cmdstr;
e5076eee 1328 }
41524a58 1329 }
d4091b82
DM		 1330
1331 foreach my $cmdstr (@cmds) {
1332 ruleset_addrule($ruleset, $chain, $cmdstr);
1333 }
3fa83edf 1334}
0f168d7b 1335
eba0fb64
DM		 1336sub ruleset_generate_rule_insert {
1337 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1338
e5076eee
DM		 1339 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1340
eba0fb64
DM		 1341 if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
1342 ruleset_insertrule($ruleset, $chain, $cmdstr);
1343 }
1344}
3fa83edf
DM		 1345
1346sub ruleset_create_chain {
1347 my ($ruleset, $chain) = @_;
3a616aa0 1348
d050c724 1349 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
782c4cde 1350 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
d050c724 1351
3fa83edf
DM		 1352 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1353
1354 $ruleset->{$chain} = [];
3a616aa0
AD		 1355}
1356
3fa83edf
DM		 1357sub ruleset_chain_exist {
1358 my ($ruleset, $chain) = @_;
3a616aa0 1359
3fa83edf
DM		 1360 return $ruleset->{$chain} ? 1 : undef;
1361}
3a616aa0 1362
3fa83edf
DM		 1363sub ruleset_addrule {
1364 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1365
3fa83edf 1366 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1367
3fa83edf
DM		 1368 push @{$ruleset->{$chain}}, "-A $chain $rule";
1369}
3a616aa0 1370
3fa83edf
DM		 1371sub ruleset_insertrule {
1372 my ($ruleset, $chain, $rule) = @_;
3a616aa0 1373
3fa83edf 1374 die "no such chain '$chain'\n" if !$ruleset->{$chain};
3a616aa0 1375
3fa83edf
DM		 1376 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1377}
3a616aa0 1378
782c4cde
DM		 1379sub get_log_rule_base {
1380 my ($chain, $vmid, $msg, $loglevel) = @_;
cbb5d6f3 1381
782c4cde
DM		 1382 die "internal error - no log level" if !defined($loglevel);
1383
1384 $vmid = 0 if !defined($vmid);
1385
cbb5d6f3 1386 # Note: we use special format for prefix to pass further
782c4cde
DM		 1387 # info to log daemon (VMID, LOGVELEL and CHAIN)
1388
1389 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1390}
1391
1392sub ruleset_addlog {
1393 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1394
1395 return if !defined($loglevel);
1396
1397 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1398
1399 $logrule = "$rule $logrule" if defined($rule);
1400
88733a74 1401 ruleset_addrule($ruleset, $chain, $logrule);
782c4cde
DM		 1402}
1403
ead850e8 1404sub ruleset_add_chain_policy {
782c4cde 1405 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
ead850e8
DM		 1406
1407 if ($policy eq 'ACCEPT') {
1408
1409 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1410 { ACCEPT => $accept_action});
1411
1412 } elsif ($policy eq 'DROP') {
1413
1414 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop");
1415
782c4cde 1416 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1417
1418 ruleset_addrule($ruleset, $chain, "-j DROP");
1419 } elsif ($policy eq 'REJECT') {
1420 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject");
1421
782c4cde 1422 ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel);
ead850e8
DM		 1423
1424 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject");
1425 } else {
1426 # should not happen
1427 die "internal error: unknown policy '$policy'";
1428 }
1429}
1430
e2943485
DM		 1431sub ruleset_chain_add_conn_filters {
1432 my ($ruleset, $chain, $accept) = @_;
1433
1434 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
1435 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
1436}
1437
1438sub ruleset_chain_add_input_filters {
1439 my ($ruleset, $chain, $options) = @_;
1440
1441 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1442 ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
1443 }
1444
1445 if ($options->{tcpflags}) {
1446 ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags");
1447 }
1448}
1449
9e15114a 1450sub ruleset_create_vm_chain {
6bafd113 1451 my ($ruleset, $chain, $options, $host_options, $macaddr, $direction) = @_;
3a616aa0 1452
9e15114a 1453 ruleset_create_chain($ruleset, $chain);
b47ecc88 1454 my $accept = generate_nfqueue($options);
3a616aa0 1455
ce15d90b 1456 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
76a2d1e7 1457 if ($direction eq 'OUT') {
cbb5d6f3 1458 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
0f168d7b 1459 proto => 'udp', sport => 68, dport => 67 });
76a2d1e7 1460 } else {
cbb5d6f3 1461 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
0f168d7b 1462 proto => 'udp', sport => 67, dport => 68 });
76a2d1e7 1463 }
ce15d90b
DM		 1464 }
1465
b21aca2c
DM		 1466 if ($direction eq 'OUT') {
1467 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
9e15114a 1468 ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
b21aca2c 1469 }
9e15114a 1470 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
c29f55c9 1471 }
9e15114a
DM		 1472}
1473
1474sub ruleset_generate_vm_rules {
fca39c2c 1475 my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_;
9e15114a
DM		 1476
1477 my $lc_direction = lc($direction);
c29f55c9 1478
6b8ca015
DM		 1479 my $in_accept = generate_nfqueue($options);
1480
92e976b3
DM		 1481 foreach my $rule (@$rules) {
1482 next if $rule->{iface} && $rule->{iface} ne $netid;
ea9e5116 1483 next if !$rule->{enable};
92e976b3 1484 if ($rule->{type} eq 'group') {
cbb5d6f3 1485 my $group_chain = "GROUP-$rule->{action}-$direction";
92e976b3 1486 if(!ruleset_chain_exist($ruleset, $group_chain)){
fca39c2c 1487 generate_group_rules($ruleset, $cluster_conf, $rule->{action});
92e976b3 1488 }
9e15114a 1489 ruleset_addrule($ruleset, $chain, "-j $group_chain");
b47ecc88
AD		 1490 if ($direction eq 'OUT'){
1491 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN");
1492 }else{
1493 my $accept = generate_nfqueue($options);
1494 ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept");
1495 }
1496
92e976b3
DM		 1497 } else {
1498 next if $rule->{type} ne $lc_direction;
921dfb33
DM		 1499 eval {
1500 if ($direction eq 'OUT') {
1501 ruleset_generate_rule($ruleset, $chain, $rule,
e34d0e58 1502 { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
921dfb33
DM		 1503 undef, $cluster_conf);
1504 } else {
e34d0e58
DM		 1505 ruleset_generate_rule($ruleset, $chain, $rule,
1506 { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
921dfb33
DM		 1507 undef, $cluster_conf);
1508 }
1509 };
1510 warn $@ if $@;
4e6112f9 1511 }
3a616aa0 1512 }
9e15114a
DM		 1513}
1514
b47ecc88
AD		 1515sub generate_nfqueue {
1516 my ($options) = @_;
1517
73089769
DM		 1518 if ($options->{ips}) {
1519 my $action = "NFQUEUE";
1520 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1521 if (defined($3) && defined($1)) {
b47ecc88 1522 $action .= " --queue-balance $1:$3";
73089769 1523 } elsif (defined($1)) {
b47ecc88
AD		 1524 $action .= " --queue-num $1";
1525 }
1526 }
8dc92812 1527 $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10
73089769
DM		 1528 return $action;
1529 } else {
1530 return "ACCEPT";
b47ecc88 1531 }
b47ecc88
AD		 1532}
1533
da6fc60b 1534sub ruleset_generate_vm_ipsrules {
a01c32c7 1535 my ($ruleset, $options, $direction, $iface) = @_;
da6fc60b
AD		 1536
1537 if ($options->{ips} && $direction eq 'IN') {
1538 my $nfqueue = generate_nfqueue($options);
1539
a01c32c7 1540 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) {
da6fc60b
AD		 1541 ruleset_create_chain($ruleset, "PVEFW-IPS");
1542 }
1543
a01c32c7 1544 ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue");
da6fc60b
AD		 1545 }
1546}
1547
9e15114a 1548sub generate_venet_rules_direction {
6bafd113 1549 my ($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
9e15114a 1550
5176619e 1551 parse_address_list($ip); # make sure we have a valid $ip list
9e15114a
DM		 1552
1553 my $lc_direction = lc($direction);
1554
1555 my $rules = $vmfw_conf->{rules};
1556
1557 my $options = $vmfw_conf->{options};
6bafd113 1558 my $hostfw_options = $vmfw_conf->{options};
9e15114a
DM		 1559 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1560
1561 my $chain = "venet0-$vmid-$direction";
1562
6bafd113 1563 ruleset_create_vm_chain($ruleset, $chain, $options, $hostfw_options, undef, $direction);
9e15114a 1564
fca39c2c 1565 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction);
9e15114a
DM		 1566
1567 # implement policy
1568 my $policy;
1569
1570 if ($direction eq 'OUT') {
1571 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1572 } else {
1573 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1574 }
1575
b47ecc88
AD		 1576 my $accept = generate_nfqueue($options);
1577 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1578 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
9e15114a 1579
eba0fb64 1580 if ($direction eq 'OUT') {
41389aed 1581 ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", {
eba0fb64
DM		 1582 action => $chain,
1583 source => $ip,
1584 iface_in => 'venet0'});
1585 } else {
41389aed 1586 ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", {
eba0fb64
DM		 1587 action => $chain,
1588 dest => $ip,
1589 iface_out => 'venet0'});
1590 }
9e15114a
DM		 1591}
1592
1593sub generate_tap_rules_direction {
a01c32c7 1594 my ($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction) = @_;
9e15114a
DM		 1595
1596 my $lc_direction = lc($direction);
1597
1598 my $rules = $vmfw_conf->{rules};
1599
1600 my $options = $vmfw_conf->{options};
6bafd113 1601 my $hostfw_options = $hostfw_conf->{options};
9e15114a
DM		 1602 my $loglevel = get_option_log_level($options, "log_level_${lc_direction}");
1603
1604 my $tapchain = "$iface-$direction";
1605
6bafd113 1606 ruleset_create_vm_chain($ruleset, $tapchain, $options, $hostfw_options, $macaddr, $direction);
9e15114a 1607
fca39c2c 1608 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options);
3a616aa0 1609
a01c32c7 1610 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
da6fc60b 1611
ccae0b50
DM		 1612 # implement policy
1613 my $policy;
1614
1615 if ($direction eq 'OUT') {
72f63fde 1616 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
ccae0b50 1617 } else {
72f63fde 1618 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
ccae0b50
DM		 1619 }
1620
b47ecc88
AD		 1621 my $accept = generate_nfqueue($options);
1622 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
782c4cde 1623 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
3a616aa0 1624
3fa83edf 1625 # plug the tap chain to bridge chain
3cc81077 1626 if ($direction eq 'IN') {
a01c32c7
DM		 1627 ruleset_addrule($ruleset, "PVEFW-FWBR-IN",
1628 "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain");
3cc81077 1629 } else {
a01c32c7
DM		 1630 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT",
1631 "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain");
3cc81077 1632 }
3a616aa0
AD		 1633}
1634
d18c1e2b 1635sub enable_host_firewall {
fca39c2c 1636 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
0bd5f137 1637
92e976b3 1638 my $options = $hostfw_conf->{options};
63324b09 1639 my $cluster_options = $cluster_conf->{options};
92e976b3 1640 my $rules = $hostfw_conf->{rules};
35f0c37e 1641 my $cluster_rules = $cluster_conf->{rules};
178a63be 1642
3fa83edf 1643 # host inbound firewall
dec84fcd
DM		 1644 my $chain = "PVEFW-HOST-IN";
1645 ruleset_create_chain($ruleset, $chain);
0bd5f137 1646
178a63be
DM		 1647 my $loglevel = get_option_log_level($options, "log_level_in");
1648
e2943485 1649 ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
4ac863a6 1650
e2943485
DM		 1651 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
1652 ruleset_chain_add_input_filters($ruleset, $chain, $options);
fb424a00 1653
dec84fcd 1654 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1655 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1656 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1657
23e888f8
DM		 1658 # we use RETURN because we need to check also tap rules
1659 my $accept_action = 'RETURN';
1660
35f0c37e
DM		 1661 # add host rules first, so that cluster wide rules can be overwritten
1662 foreach my $rule (@$rules, @$cluster_rules) {
92e976b3 1663 next if $rule->{type} ne 'in';
ba791b1f 1664 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf);
0bd5f137
AD		 1665 }
1666
23e888f8 1667 # implement input policy
63324b09 1668 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
782c4cde 1669 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
0bd5f137 1670
3fa83edf 1671 # host outbound firewall
aadd745e 1672 $chain = "PVEFW-HOST-OUT";
dec84fcd
DM		 1673 ruleset_create_chain($ruleset, $chain);
1674
178a63be
DM		 1675 $loglevel = get_option_log_level($options, "log_level_out");
1676
dec84fcd 1677 ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT");
e2943485
DM		 1678
1679 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
1680
dec84fcd 1681 ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
97156ecc 1682 ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT");
dec84fcd 1683 ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
0bd5f137 1684
23e888f8
DM		 1685 # we use RETURN because we may want to check other thigs later
1686 $accept_action = 'RETURN';
1687
35f0c37e
DM		 1688 # add host rules first, so that cluster wide rules can be overwritten
1689 foreach my $rule (@$rules, @$cluster_rules) {
92e976b3 1690 next if $rule->{type} ne 'out';
ba791b1f 1691 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf);
0bd5f137
AD		 1692 }
1693
23e888f8 1694 # implement output policy
63324b09 1695 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
782c4cde 1696 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
6158271d 1697
dec84fcd
DM		 1698 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
1699 ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
9d31b418
AD		 1700}
1701
1702sub generate_group_rules {
fca39c2c 1703 my ($ruleset, $cluster_conf, $group) = @_;
c6f5cc88 1704 die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group};
9d31b418 1705
c6f5cc88 1706 my $rules = $cluster_conf->{groups}->{$group};
6158271d 1707
3fa83edf 1708 my $chain = "GROUP-${group}-IN";
9d31b418 1709
3fa83edf 1710 ruleset_create_chain($ruleset, $chain);
b47ecc88 1711 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1712
92e976b3
DM		 1713 foreach my $rule (@$rules) {
1714 next if $rule->{type} ne 'in';
ba791b1f 1715 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418
AD		 1716 }
1717
3fa83edf 1718 $chain = "GROUP-${group}-OUT";
9d31b418 1719
3fa83edf 1720 ruleset_create_chain($ruleset, $chain);
4e6112f9 1721 ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
9d31b418 1722
92e976b3
DM		 1723 foreach my $rule (@$rules) {
1724 next if $rule->{type} ne 'out';
1725 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1726 # check also other tap rules later
cbb5d6f3 1727 ruleset_generate_rule($ruleset, $chain, $rule,
ba791b1f 1728 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
9d31b418 1729 }
9d31b418
AD		 1730}
1731
51bae274
DM		 1732my $MAX_NETS = 32;
1733my $valid_netdev_names = {};
1734for (my $i = 0; $i < $MAX_NETS; $i++) {
1735 $valid_netdev_names->{"net$i"} = 1;
1736}
5e1267a5 1737
51bae274
DM		 1738sub parse_fw_rule {
1739 my ($line, $need_iface, $allow_groups) = @_;
5e1267a5 1740
92e976b3 1741 my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport);
51bae274 1742
11bac5c2 1743 # we can add single line comments to the end of the rule
30c1ae52 1744 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
11bac5c2
DM		 1745
1746 # we can disable a rule when prefixed with '|'
ea9e5116
DM		 1747 my $enable = 1;
1748
1749 $enable = 0 if $line =~ s/^\|//;
51bae274
DM		 1750
1751 my @data = split(/\s+/, $line);
92e976b3 1752 my $expected_elements = $need_iface ? 8 : 7;
51bae274
DM		 1753
1754 die "wrong number of rule elements\n" if scalar(@data) > $expected_elements;
1755
1756 if ($need_iface) {
92e976b3 1757 ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data
51bae274 1758 } else {
92e976b3 1759 ($type, $action, $source, $dest, $proto, $dport, $sport) = @data;
51bae274
DM		 1760 }
1761
92e976b3 1762 die "incomplete rule\n" if ! ($type && $action);
51bae274 1763
961b4928 1764 my $macro;
961b4928 1765
92e976b3
DM		 1766 $type = lc($type);
1767
1768 if ($type eq 'in' || $type eq 'out') {
1769 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1770 # OK
1771 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
e5076eee
DM		 1772 $action = $2;
1773 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1774 die "unknown macro '$1'\n" if !$preferred_name;
1775 $macro = $preferred_name;
92e976b3
DM		 1776 } else {
1777 die "unknown action '$action'\n";
1778 }
1779 } elsif ($type eq 'group') {
1780 die "wrong number of rule elements\n" if scalar(@data) != 3;
1781 die "groups disabled\n" if !$allow_groups;
1782
44be8ceb 1783 die "invalid characters in group name\n" if $action !~ m/^${security_group_name_pattern}$/;
51bae274 1784 } else {
92e976b3 1785 die "unknown rule type '$type'\n";
51bae274
DM		 1786 }
1787
1788 if ($need_iface) {
1789 $iface = undef if $iface && $iface eq '-';
51bae274
DM		 1790 }
1791
1792 $proto = undef if $proto && $proto eq '-';
54cd19a8 1793 pve_fw_verify_protocol_spec($proto) if $proto;
51bae274
DM		 1794
1795 $source = undef if $source && $source eq '-';
1796 $dest = undef if $dest && $dest eq '-';
1797
1798 $dport = undef if $dport && $dport eq '-';
1799 $sport = undef if $sport && $sport eq '-';
1800
e5076eee
DM		 1801 parse_port_name_number_or_range($dport) if defined($dport);
1802 parse_port_name_number_or_range($sport) if defined($sport);
ba791b1f 1803
d72beb8e
DM		 1804 parse_address_list($source) if $source;
1805 parse_address_list($dest) if $dest;
51bae274 1806
e5076eee 1807 return {
92e976b3 1808 type => $type,
ea9e5116 1809 enable => $enable,
11bac5c2 1810 comment => $comment,
51bae274 1811 action => $action,
e5076eee 1812 macro => $macro,
51bae274
DM		 1813 iface => $iface,
1814 source => $source,
1815 dest => $dest,
51bae274
DM		 1816 proto => $proto,
1817 dport => $dport,
1818 sport => $sport,
51bae274
DM		 1819 };
1820}
1821
2d404ffc 1822sub parse_vmfw_option {
85c6eaed
DM		 1823 my ($line) = @_;
1824
1825 my ($opt, $value);
1826
178a63be
DM		 1827 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1828
6bafd113 1829 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
9c6b6efd
DM		 1830 $opt = lc($1);
1831 $value = int($2);
178a63be
DM		 1832 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1833 $opt = lc($1);
1834 $value = $2 ? lc($3) : '';
72f63fde 1835 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
85c6eaed
DM		 1836 $opt = lc($1);
1837 $value = uc($3);
b47ecc88
AD		 1838 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1839 $opt = lc($1);
1840 $value = $2;
9c6b6efd 1841 } else {
85c6eaed
DM		 1842 chomp $line;
1843 die "can't parse option '$line'\n"
1844 }
1845
1846 return ($opt, $value);
1847}
1848
2d404ffc
DM		 1849sub parse_hostfw_option {
1850 my ($line) = @_;
1851
1852 my ($opt, $value);
1853
1854 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1855
c50a5a68 1856 if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
2d404ffc
DM		 1857 $opt = lc($1);
1858 $value = int($2);
178a63be 1859 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2d404ffc
DM		 1860 $opt = lc($1);
1861 $value = $2 ? lc($3) : '';
28c082a1 1862 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
490cdead
DM		 1863 $opt = lc($1);
1864 $value = int($2);
2d404ffc
DM		 1865 } else {
1866 chomp $line;
1867 die "can't parse option '$line'\n"
1868 }
1869
1870 return ($opt, $value);
1871}
1872
c6f5cc88
DM		 1873sub parse_clusterfw_option {
1874 my ($line) = @_;
1875
1876 my ($opt, $value);
1877
1878 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
1879 $opt = lc($1);
1880 $value = int($2);
63324b09
DM		 1881 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1882 $opt = lc($1);
1883 $value = uc($3);
c6f5cc88
DM		 1884 } else {
1885 chomp $line;
1886 die "can't parse option '$line'\n"
1887 }
1888
1889 return ($opt, $value);
1890}
1891
92e1209b
AD		 1892sub parse_clusterfw_alias {
1893 my ($line) = @_;
1894
81d574a7
DM		 1895 # we can add single line comments to the end of the line
1896 my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
1897
92e1209b 1898 if ($line =~ m/^(\S+)\s(\S+)$/) {
81d574a7
DM		 1899 my ($name, $cidr) = ($1, $2);
1900 $cidr =~ s|/32$||;
1901 pve_verify_ipv4_or_cidr($cidr);
1902 my $data = {
1903 name => $name,
1904 cidr => $cidr,
1905 };
1906 $data->{comment} = $comment if $comment;
1907 return $data;
92e1209b
AD		 1908 }
1909
81d574a7 1910 return undef;
92e1209b
AD		 1911}
1912
51bae274
DM		 1913sub parse_vm_fw_rules {
1914 my ($filename, $fh) = @_;
1915
92e976b3 1916 my $res = { rules => [], options => {}};
51bae274
DM		 1917
1918 my $section;
1919
5e1267a5
DM		 1920 while (defined(my $line = <$fh>)) {
1921 next if $line =~ m/^#/;
1922 next if $line =~ m/^\s*$/;
1923
961b4928
DM		 1924 my $linenr = $fh->input_line_number();
1925 my $prefix = "$filename (line $linenr)";
1926
85c6eaed 1927 if ($line =~ m/^\[(\S+)\]\s*$/i) {
5e1267a5 1928 $section = lc($1);
85c6eaed 1929 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 1930 next;
1931 }
51bae274 1932 if (!$section) {
961b4928 1933 warn "$prefix: skip line - no section";
5e1267a5
DM		 1934 next;
1935 }
1936
85c6eaed
DM		 1937 next if !$res->{$section}; # skip undefined section
1938
1939 if ($section eq 'options') {
6158271d 1940 eval {
2d404ffc 1941 my ($opt, $value) = parse_vmfw_option($line);
85c6eaed
DM		 1942 $res->{options}->{$opt} = $value;
1943 };
1944 warn "$prefix: $@" if $@;
1945 next;
1946 }
1947
e5076eee
DM		 1948 my $rule;
1949 eval { $rule = parse_fw_rule($line, 1, 1); };
51bae274 1950 if (my $err = $@) {
961b4928 1951 warn "$prefix: $err";
5e1267a5
DM		 1952 next;
1953 }
1954
e5076eee 1955 push @{$res->{$section}}, $rule;
51bae274
DM		 1956 }
1957
1958 return $res;
1959}
1960
1961sub parse_host_fw_rules {
1962 my ($filename, $fh) = @_;
1963
92e976b3 1964 my $res = { rules => [], options => {}};
51bae274
DM		 1965
1966 my $section;
1967
1968 while (defined(my $line = <$fh>)) {
1969 next if $line =~ m/^#/;
1970 next if $line =~ m/^\s*$/;
1971
961b4928
DM		 1972 my $linenr = $fh->input_line_number();
1973 my $prefix = "$filename (line $linenr)";
1974
2d404ffc 1975 if ($line =~ m/^\[(\S+)\]\s*$/i) {
51bae274 1976 $section = lc($1);
2d404ffc 1977 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
5e1267a5
DM		 1978 next;
1979 }
51bae274 1980 if (!$section) {
961b4928 1981 warn "$prefix: skip line - no section";
5e1267a5
DM		 1982 next;
1983 }
1984
2d404ffc
DM		 1985 next if !$res->{$section}; # skip undefined section
1986
1987 if ($section eq 'options') {
1988 eval {
2d404ffc
DM		 1989 my ($opt, $value) = parse_hostfw_option($line);
1990 $res->{options}->{$opt} = $value;
1991 };
1992 warn "$prefix: $@" if $@;
1993 next;
1994 }
1995
e5076eee
DM		 1996 my $rule;
1997 eval { $rule = parse_fw_rule($line, 1, 1); };
ecbea048 1998 if (my $err = $@) {
961b4928 1999 warn "$prefix: $err";
ecbea048 2000 next;
ecbea048 2001 }
cbb5d6f3 2002
e5076eee 2003 push @{$res->{$section}}, $rule;
51bae274 2004 }
ecbea048 2005
51bae274
DM		 2006 return $res;
2007}
4cdbb3b7 2008
c6f5cc88 2009sub parse_cluster_fw_rules {
51bae274 2010 my ($filename, $fh) = @_;
5e1267a5 2011
51bae274
DM		 2012 my $section;
2013 my $group;
2014
e34d0e58
DM		 2015 my $res = {
2016 rules => [],
2017 options => {},
2018 aliases => {},
2019 groups => {},
2020 group_comments => {},
d72c631c 2021 ipset => {} ,
e34d0e58 2022 ipset_comments => {},
0d22acb3 2023 };
6158271d 2024
51bae274
DM		 2025 while (defined(my $line = <$fh>)) {
2026 next if $line =~ m/^#/;
2027 next if $line =~ m/^\s*$/;
2028
961b4928
DM		 2029 my $linenr = $fh->input_line_number();
2030 my $prefix = "$filename (line $linenr)";
2031
c6f5cc88
DM		 2032 if ($line =~ m/^\[options\]$/i) {
2033 $section = 'options';
2034 next;
2035 }
2036
92e1209b
AD		 2037 if ($line =~ m/^\[aliases\]$/i) {
2038 $section = 'aliases';
2039 next;
2040 }
2041
0d22acb3 2042 if ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
c6f5cc88 2043 $section = 'groups';
92e976b3 2044 $group = lc($1);
0d22acb3 2045 my $comment = $2;
c85c87f9 2046 $res->{$section}->{$group} = [];
649e4d57
DM		 2047 $res->{group_comments}->{$group} = decode('utf8', $comment)
2048 if $comment;
51bae274
DM		 2049 next;
2050 }
34cdedfa 2051
c6f5cc88
DM		 2052 if ($line =~ m/^\[rules\]$/i) {
2053 $section = 'rules';
2054 next;
2055 }
cbb5d6f3 2056
d72c631c 2057 if ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
34cdedfa
AD		 2058 $section = 'ipset';
2059 $group = lc($1);
d72c631c 2060 my $comment = $2;
c85c87f9 2061 $res->{$section}->{$group} = [];
e34d0e58 2062 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
649e4d57 2063 if $comment;
34cdedfa
AD		 2064 next;
2065 }
2066
c6f5cc88 2067 if (!$section) {
cbb5d6f3 2068 warn "$prefix: skip line - no section\n";
51bae274
DM		 2069 next;
2070 }
2071
c6f5cc88
DM		 2072 if ($section eq 'options') {
2073 eval {
2074 my ($opt, $value) = parse_clusterfw_option($line);
2075 $res->{options}->{$opt} = $value;
2076 };
2077 warn "$prefix: $@" if $@;
92e1209b
AD		 2078 } elsif ($section eq 'aliases') {
2079 eval {
81d574a7
DM		 2080 my $data = parse_clusterfw_alias($line);
2081 $res->{aliases}->{lc($data->{name})} = $data;
92e1209b
AD		 2082 };
2083 warn "$prefix: $@" if $@;
c6f5cc88
DM		 2084 } elsif ($section eq 'rules') {
2085 my $rule;
2086 eval { $rule = parse_fw_rule($line, 1, 1); };
2087 if (my $err = $@) {
2088 warn "$prefix: $err";
2089 next;
2090 }
2091 push @{$res->{$section}}, $rule;
2092 } elsif ($section eq 'groups') {
34cdedfa
AD		 2093 my $rule;
2094 eval { $rule = parse_fw_rule($line, 0, 0); };
2095 if (my $err = $@) {
2096 warn "$prefix: $err";
2097 next;
2098 }
3f95d14a 2099 push @{$res->{$section}->{$group}}, $rule;
3f95d14a 2100 } elsif ($section eq 'ipset') {
9d6f90e6
DM		 2101 # we can add single line comments to the end of the rule
2102 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2103
30f1b100 2104 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2a052ee3 2105 my $nomatch = $1;
9d6f90e6 2106 my $cidr = $2;
2a052ee3 2107
44be8ceb 2108 if($cidr !~ m/^${ip_alias_pattern}$/) {
92e1209b 2109 $cidr =~ s|/32$||;
e34d0e58 2110
92e1209b
AD		 2111 eval { pve_verify_ipv4_or_cidr($cidr); };
2112 if (my $err = $@) {
2113 warn "$prefix: $cidr - $err";
2114 next;
2115 }
2a052ee3 2116 }
2a052ee3 2117
e34d0e58 2118 my $entry = { cidr => $cidr };
9d6f90e6
DM		 2119 $entry->{nomatch} = 1 if $nomatch;
2120 $entry->{comment} = $comment if $comment;
e34d0e58 2121
9d6f90e6 2122 push @{$res->{$section}->{$group}}, $entry;
51bae274 2123 }
5e1267a5
DM		 2124 }
2125
2126 return $res;
2127}
2128
06320eb0
DM		 2129sub run_locked {
2130 my ($code, @param) = @_;
2131
2132 my $timeout = 10;
2133
2134 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2135
2136 die $@ if $@;
2137
2138 return $res;
2139}
2140
5e1267a5
DM		 2141sub read_local_vm_config {
2142
2143 my $openvz = {};
5e1267a5
DM		 2144 my $qemu = {};
2145
c8301d63 2146 my $vmdata = { openvz => $openvz, qemu => $qemu };
5e1267a5 2147
c8301d63
DM		 2148 my $vmlist = PVE::Cluster::get_vmlist();
2149 return $vmdata if !$vmlist || !$vmlist->{ids};
2150 my $ids = $vmlist->{ids};
2151
2152 foreach my $vmid (keys %$ids) {
2153 next if !$vmid; # skip VE0
2154 my $d = $ids->{$vmid};
2155 next if !$d->{node} || $d->{node} ne $nodename;
2156 next if !$d->{type};
2157 if ($d->{type} eq 'openvz') {
d9fee004
DM		 2158 if ($have_pve_manager) {
2159 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2160 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2161 $openvz->{$vmid} = $conf;
2162 }
c8301d63
DM		 2163 }
2164 } elsif ($d->{type} eq 'qemu') {
d9fee004
DM		 2165 if ($have_qemu_server) {
2166 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2167 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2168 $qemu->{$vmid} = $conf;
2169 }
c8301d63 2170 }
5e1267a5
DM		 2171 }
2172 }
d9fee004 2173
5e1267a5
DM		 2174 return $vmdata;
2175};
2176
e7b35711 2177sub load_vmfw_conf {
8aef5177 2178 my ($vmid, $dir) = @_;
e7b35711
DM		 2179
2180 my $vmfw_conf = {};
2181
8aef5177
DM		 2182 $dir = "/etc/pve/firewall" if !defined($dir);
2183
2184 my $filename = "$dir/$vmid.fw";
e7b35711
DM		 2185 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2186 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
2187 }
2188
2189 return $vmfw_conf;
2190}
2191
464f933e
DM		 2192my $format_rules = sub {
2193 my ($rules, $need_iface) = @_;
2194
2195 my $raw = '';
2196
2197 foreach my $rule (@$rules) {
c14dacdf 2198 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
464f933e
DM		 2199 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2200 $raw .= uc($rule->{type});
7ca36671
DM		 2201 if ($rule->{macro}) {
2202 $raw .= " $rule->{macro}($rule->{action})";
2203 } else {
2204 $raw .= " " . $rule->{action};
2205 }
464f933e 2206 $raw .= " " . ($rule->{iface} || '-') if $need_iface;
c14dacdf
DM		 2207
2208 if ($rule->{type} ne 'group') {
2209 $raw .= " " . ($rule->{source} || '-');
2210 $raw .= " " . ($rule->{dest} || '-');
2211 $raw .= " " . ($rule->{proto} || '-');
2212 $raw .= " " . ($rule->{dport} || '-');
2213 $raw .= " " . ($rule->{sport} || '-');
2214 }
2215
cbb5d6f3 2216 $raw .= " # " . encode('utf8', $rule->{comment})
464f933e
DM		 2217 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2218 $raw .= "\n";
2219 } else {
c14dacdf 2220 die "unknown rule type '$rule->{type}'";
464f933e
DM		 2221 }
2222 }
2223
2224 return $raw;
2225};
2226
2227my $format_options = sub {
68c90e21
DM		 2228 my ($options) = @_;
2229
2230 my $raw = '';
464f933e
DM		 2231
2232 $raw .= "[OPTIONS]\n\n";
2233 foreach my $opt (keys %$options) {
2234 $raw .= "$opt: $options->{$opt}\n";
2235 }
2236 $raw .= "\n";
68c90e21
DM		 2237
2238 return $raw;
464f933e
DM		 2239};
2240
0d5f0a0f
DM		 2241my $format_aliases = sub {
2242 my ($aliases) = @_;
2243
2244 my $raw = '';
2245
2246 $raw .= "[ALIASES]\n\n";
2247 foreach my $k (keys %$aliases) {
81d574a7
DM		 2248 my $e = $aliases->{$k};
2249 $raw .= "$e->{name} $e->{cidr}";
2250 $raw .= " # " . encode('utf8', $e->{comment})
2251 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2252 $raw .= "\n";
0d5f0a0f
DM		 2253 }
2254 $raw .= "\n";
2255
2256 return $raw;
2257};
2258
9d6f90e6
DM		 2259my $format_ipset = sub {
2260 my ($options) = @_;
2261
2262 my $raw = '';
2263
6e299ae3 2264 my $nethash = {};
9d6f90e6 2265 foreach my $entry (@$options) {
6e299ae3
DM		 2266 $nethash->{$entry->{cidr}} = $entry;
2267 }
2268
2269 foreach my $cidr (sort keys %$nethash) {
2270 my $entry = $nethash->{$cidr};
9d6f90e6
DM		 2271 my $line = $entry->{nomatch} ? '!' : '';
2272 $line .= $entry->{cidr};
2273 $line .= " # " . encode('utf8', $entry->{comment})
2274 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2275 $raw .= "$line\n";
2276 }
e34d0e58 2277
9d6f90e6
DM		 2278 return $raw;
2279};
2280
464f933e
DM		 2281sub save_vmfw_conf {
2282 my ($vmid, $vmfw_conf) = @_;
2283
2284 my $raw = '';
2285
2286 my $options = $vmfw_conf->{options};
68c90e21 2287 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2288
8824b2f0 2289 my $rules = $vmfw_conf->{rules} || [];
464f933e
DM		 2290 if (scalar(@$rules)) {
2291 $raw .= "[RULES]\n\n";
2292 $raw .= &$format_rules($rules, 1);
2293 $raw .= "\n";
2294 }
2295
2296 my $filename = "/etc/pve/firewall/$vmid.fw";
2297 PVE::Tools::file_set_contents($filename, $raw);
2298}
2299
6fc63ffd 2300sub read_vm_firewall_configs {
8aef5177
DM		 2301 my ($vmdata, $dir) = @_;
2302
6fc63ffd 2303 my $vmfw_configs = {};
c8301d63 2304
5e1267a5 2305 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
8aef5177 2306 my $vmfw_conf = load_vmfw_conf($vmid, $dir);
e7b35711
DM		 2307 next if !$vmfw_conf->{options}; # skip if file does not exists
2308 $vmfw_configs->{$vmid} = $vmfw_conf;
5e1267a5
DM		 2309 }
2310
6fc63ffd 2311 return $vmfw_configs;
5e1267a5
DM		 2312}
2313
2d404ffc
DM		 2314sub get_option_log_level {
2315 my ($options, $k) = @_;
2316
2317 my $v = $options->{$k};
178a63be 2318 $v = $default_log_level if !defined($v);
2d404ffc
DM		 2319
2320 return undef if $v eq '' || $v eq 'nolog';
2321
2322 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2323
2324 return $v if ($v >= 0) && ($v <= 7);
2325
2326 warn "unknown log level ($k = '$v')\n";
2327
2328 return undef;
2329}
2330
d8f2505e 2331sub generate_std_chains {
2d404ffc 2332 my ($ruleset, $options) = @_;
cbb5d6f3 2333
2d404ffc
DM		 2334 my $loglevel = get_option_log_level($options, 'smurf_log_level');
2335
2336 # same as shorewall smurflog.
782c4cde 2337 my $chain = 'PVEFW-smurflog';
12f3796e 2338 $pve_std_chains->{$chain} = [];
782c4cde
DM		 2339
2340 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2341 push @{$pve_std_chains->{$chain}}, "-j DROP";
2d404ffc
DM		 2342
2343 # same as shorewall logflags action.
2344 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
782c4cde 2345 $chain = 'PVEFW-logflags';
12f3796e
DM		 2346 $pve_std_chains->{$chain} = [];
2347
782c4cde
DM		 2348 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2349 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2350 push @{$pve_std_chains->{$chain}}, "-j DROP";
d8f2505e
DM		 2351
2352 foreach my $chain (keys %$pve_std_chains) {
2353 ruleset_create_chain($ruleset, $chain);
2354 foreach my $rule (@{$pve_std_chains->{$chain}}) {
2355 if (ref($rule)) {
2356 ruleset_generate_rule($ruleset, $chain, $rule);
2357 } else {
2358 ruleset_addrule($ruleset, $chain, $rule);
2359 }
2360 }
2361 }
2362}
2363
34cdedfa 2364sub generate_ipset_chains {
dd7a13fd 2365 my ($ipset_ruleset, $fw_conf) = @_;
34cdedfa 2366
dd7a13fd 2367 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
92e1209b 2368 generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}, $fw_conf->{aliases});
34cdedfa
AD		 2369 }
2370}
2371
2372sub generate_ipset {
92e1209b 2373 my ($ipset_ruleset, $name, $options, $aliases) = @_;
34cdedfa 2374
dd7a13fd
DM		 2375 my $hashsize = scalar(@$options);
2376 if ($hashsize <= 64) {
2a052ee3 2377 $hashsize = 64;
dd7a13fd 2378 } else {
2a052ee3
AD		 2379 $hashsize = round_powerof2($hashsize);
2380 }
2381
dd7a13fd 2382 push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize";
34cdedfa 2383
30f1b100
DM		 2384 # remove duplicates
2385 my $nethash = {};
9d6f90e6 2386 foreach my $entry (@$options) {
92e1209b 2387 my $cidr = $entry->{cidr};
d4091b82 2388 if ($cidr =~ m/^${ip_alias_pattern}$/) {
81d574a7
DM		 2389 my $alias = lc($cidr);
2390 if ($aliases->{$alias}) {
2391 $entry->{cidr} = $aliases->{$alias}->{cidr};
7dd13259 2392 $nethash->{$entry->{cidr}} = $entry;
d4091b82 2393 } else {
81d574a7 2394 warn "no such alias '$cidr'\n" if !$aliases->{$alias};
d4091b82 2395 }
7dd13259
DM		 2396 } else {
2397 $nethash->{$entry->{cidr}} = $entry;
92e1209b 2398 }
30f1b100
DM		 2399 }
2400
2401 foreach my $cidr (sort keys %$nethash) {
2402 my $entry = $nethash->{$cidr};
2403
9d6f90e6
DM		 2404 my $cmd = "add $name $cidr";
2405 if ($entry->{nomatch}) {
2406 if ($feature_ipset_nomatch) {
2407 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2408 } else {
2409 warn "ignore !$cidr - nomatch not supported by kernel\n";
2410 }
2411 } else {
2412 push @{$ipset_ruleset->{$name}}, $cmd;
2413 }
34cdedfa 2414 }
2a052ee3
AD		 2415}
2416
2417sub round_powerof2 {
dd7a13fd 2418 my ($int) = @_;
2a052ee3 2419
dd7a13fd
DM		 2420 $int--;
2421 $int |= $int >> $_ foreach (1,2,4,8,16);
2422 return ++$int;
34cdedfa
AD		 2423}
2424
6b9f68a2
DM		 2425sub save_pvefw_status {
2426 my ($status) = @_;
2427
2428 die "unknown status '$status' - internal error"
2429 if $status !~ m/^(stopped|active)$/;
2430
2431 mkdir dirname($pve_fw_status_filename);
2432 PVE::Tools::file_set_contents($pve_fw_status_filename, $status);
2433}
2434
2435sub read_pvefw_status {
2436
2437 my $status = 'unknown';
2438
2439 return 'stopped' if ! -f $pve_fw_status_filename;
2440
2441 eval {
2442 $status = PVE::Tools::file_get_contents($pve_fw_status_filename);
2443 };
2444 warn $@ if $@;
2445
2446 return $status;
2447}
2448
fca39c2c 2449sub load_clusterfw_conf {
8aef5177
DM		 2450 my ($filename) = @_;
2451
2452 $filename = $clusterfw_conf_filename if !defined($filename);
530c005e 2453
fca39c2c 2454 my $cluster_conf = {};
8aef5177
DM		 2455 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2456 $cluster_conf = parse_cluster_fw_rules($filename, $fh);
51bae274 2457 }
5e1267a5 2458
fca39c2c 2459 return $cluster_conf;
e5d76bde
DM		 2460}
2461
fca39c2c
DM		 2462sub save_clusterfw_conf {
2463 my ($cluster_conf) = @_;
9c7e0858
DM		 2464
2465 my $raw = '';
9c7e0858 2466
c6f5cc88 2467 my $options = $cluster_conf->{options};
68c90e21 2468 $raw .= &$format_options($options) if scalar(keys %$options);
9c7e0858 2469
0d5f0a0f
DM		 2470 my $aliases = $cluster_conf->{aliases};
2471 $raw .= &$format_aliases($aliases) if scalar(keys %$aliases);
e34d0e58 2472
9d6f90e6 2473 foreach my $ipset (sort keys %{$cluster_conf->{ipset}}) {
d72c631c 2474 if (my $comment = $cluster_conf->{ipset_comments}->{$ipset}) {
649e4d57
DM		 2475 my $utf8comment = encode('utf8', $comment);
2476 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
d72c631c
DM		 2477 } else {
2478 $raw .= "[IPSET $ipset]\n\n";
2479 }
9d6f90e6
DM		 2480 my $options = $cluster_conf->{ipset}->{$ipset};
2481 $raw .= &$format_ipset($options);
2482 $raw .= "\n";
2483 }
c6f5cc88
DM		 2484
2485 my $rules = $cluster_conf->{rules};
2486 if (scalar(@$rules)) {
2487 $raw .= "[RULES]\n\n";
63c91681 2488 $raw .= &$format_rules($rules, 1);
c6f5cc88
DM		 2489 $raw .= "\n";
2490 }
2491
2492 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
2493 my $rules = $cluster_conf->{groups}->{$group};
0d22acb3 2494 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
649e4d57
DM		 2495 my $utf8comment = encode('utf8', $comment);
2496 $raw .= "[group $group] # $utf8comment\n\n";
0d22acb3
DM		 2497 } else {
2498 $raw .= "[group $group]\n\n";
2499 }
2500
63c91681 2501 $raw .= &$format_rules($rules, 0);
9c7e0858
DM		 2502 $raw .= "\n";
2503 }
2504
fca39c2c 2505 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
9c7e0858
DM		 2506}
2507
8b27beb9 2508sub load_hostfw_conf {
8aef5177
DM		 2509 my ($filename) = @_;
2510
2511 $filename = $hostfw_conf_filename if !defined($filename);
8b27beb9
DM		 2512
2513 my $hostfw_conf = {};
8aef5177
DM		 2514 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2515 $hostfw_conf = parse_host_fw_rules($filename, $fh);
8b27beb9
DM		 2516 }
2517 return $hostfw_conf;
2518}
2519
63c91681
DM		 2520sub save_hostfw_conf {
2521 my ($hostfw_conf) = @_;
2522
2523 my $raw = '';
2524
2525 my $options = $hostfw_conf->{options};
68c90e21 2526 $raw .= &$format_options($options) if scalar(keys %$options);
cbb5d6f3 2527
63c91681
DM		 2528 my $rules = $hostfw_conf->{rules};
2529 if (scalar(@$rules)) {
2530 $raw .= "[RULES]\n\n";
2531 $raw .= &$format_rules($rules, 1);
2532 $raw .= "\n";
2533 }
2534
2535 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
2536}
2537
e5d76bde 2538sub compile {
8aef5177 2539 my ($cluster_conf, $hostfw_conf, $vmdata) = @_;
3dfa8a7f 2540
8aef5177
DM		 2541 my $vmfw_configs;
2542
2543 if ($vmdata) { # test mode
2544 my $testdir = $vmdata->{testdir} || die "no test directory specified";
2545 my $filename = "$testdir/cluster.fw";
2546 die "missing test file '$filename'\n" if ! -f $filename;
2547 $cluster_conf = load_clusterfw_conf($filename);
2548
2549 $filename = "$testdir/host.fw";
2550 die "missing test file '$filename'\n" if ! -f $filename;
2551 $hostfw_conf = load_hostfw_conf($filename);
2552
2553 $vmfw_configs = read_vm_firewall_configs($vmdata, $testdir);
2554 } else { # normal operation
2555 $cluster_conf = load_clusterfw_conf() if !$cluster_conf;
2556
2557 $hostfw_conf = load_hostfw_conf() if !$hostfw_conf;
2558
2559 $vmdata = read_local_vm_config();
2560 $vmfw_configs = read_vm_firewall_configs($vmdata);
2561 }
3dfa8a7f 2562
e5d76bde 2563
34cdedfa 2564 my $ipset_ruleset = {};
fca39c2c 2565 generate_ipset_chains($ipset_ruleset, $cluster_conf);
34cdedfa 2566
3fa83edf
DM		 2567 my $ruleset = {};
2568
dec84fcd
DM		 2569 ruleset_create_chain($ruleset, "PVEFW-INPUT");
2570 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
5b1df9a0 2571
fadb13dd 2572 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
e34d0e58 2573
8b27beb9 2574 my $hostfw_options = $hostfw_conf->{options} || {};
fadb13dd 2575
88733a74
AD		 2576 # fixme: what log level should we use here?
2577 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
2578
097820b0 2579 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
88733a74 2580
88733a74
AD		 2581 if ($cluster_conf->{ipset}->{blacklist}){
2582 ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-m set --match-set PVEFW-blacklist src");
2583 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m set --match-set PVEFW-blacklist src -j DROP");
2584 }
2585
e2943485
DM		 2586 ruleset_create_chain($ruleset, "PVEFW-VENET-OUT");
2587 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j PVEFW-VENET-OUT");
62689a1e 2588 ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -j PVEFW-VENET-OUT");
e2943485
DM		 2589
2590 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
2591 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options);
2592
d1b41c08 2593 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
e2943485
DM		 2594
2595 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
d1b41c08 2596 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
e2943485
DM		 2597
2598 ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
2599 ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options);
2600
2601 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -j PVEFW-VENET-IN");
2602
92e976b3 2603 generate_std_chains($ruleset, $hostfw_options);
fadb13dd 2604
6d2ab017 2605 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
2d404ffc 2606
fca39c2c 2607 enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable;
3fa83edf 2608
62689a1e
DM		 2609 ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -j PVEFW-VENET-IN");
2610
6158271d 2611 # generate firewall rules for QEMU VMs
3fa83edf
DM		 2612 foreach my $vmid (keys %{$vmdata->{qemu}}) {
2613 my $conf = $vmdata->{qemu}->{$vmid};
6fc63ffd 2614 my $vmfw_conf = $vmfw_configs->{$vmid};
fa9c4a6f
DM		 2615 next if !$vmfw_conf;
2616 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
3fa83edf
DM		 2617
2618 foreach my $netid (keys %$conf) {
2619 next if $netid !~ m/^net(\d+)$/;
2620 my $net = PVE::QemuServer::parse_net($conf->{$netid});
2621 next if !$net;
2622 my $iface = "tap${vmid}i$1";
5e1267a5 2623
c29f55c9 2624 my $macaddr = $net->{macaddr};
6bafd113 2625 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
a01c32c7 2626 $vmfw_conf, $vmid, 'IN');
6bafd113 2627 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
a01c32c7 2628 $vmfw_conf, $vmid, 'OUT');
3fa83edf
DM		 2629 }
2630 }
c8301d63
DM		 2631
2632 # generate firewall rules for OpenVZ containers
2633 foreach my $vmid (keys %{$vmdata->{openvz}}) {
2634 my $conf = $vmdata->{openvz}->{$vmid};
2635
2636 my $vmfw_conf = $vmfw_configs->{$vmid};
2637 next if !$vmfw_conf;
2638 next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0);
2639
2640 if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
2641 my $ip = $conf->{ip_address}->{value};
e34d0e58 2642 $ip =~ s/\s+/,/g;
6bafd113
DM		 2643 generate_venet_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'IN');
2644 generate_venet_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'OUT');
c8301d63
DM		 2645 }
2646
2647 if ($conf->{netif} && $conf->{netif}->{value}) {
2648 my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
c8301d63
DM		 2649 foreach my $netid (keys %$netif) {
2650 my $d = $netif->{$netid};
530c005e 2651
12d0f130 2652 my $macaddr = $d->{mac};
c8301d63 2653 my $iface = $d->{host_ifname};
6bafd113 2654 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
a01c32c7 2655 $vmfw_conf, $vmid, 'IN');
6bafd113 2656 generate_tap_rules_direction($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
a01c32c7 2657 $vmfw_conf, $vmid, 'OUT');
c8301d63
DM		 2658 }
2659 }
2660 }
c0413e35 2661
097820b0
AD		 2662 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
2663 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
2664 }
2665
3dfa8a7f 2666 return ($ruleset, $ipset_ruleset);
3fa83edf
DM		 2667}
2668
2669sub get_ruleset_status {
4bd0a9c4 2670 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3fa83edf
DM		 2671
2672 my $statushash = {};
2673
2674 foreach my $chain (sort keys %$ruleset) {
4bd0a9c4 2675 my $sig = &$digest_fn($ruleset->{$chain});
9bf7d929 2676
3fa83edf
DM		 2677 $statushash->{$chain}->{sig} = $sig;
2678
2679 my $oldsig = $active_chains->{$chain};
2680 if (!defined($oldsig)) {
2681 $statushash->{$chain}->{action} = 'create';
2682 } else {
2683 if ($oldsig eq $sig) {
2684 $statushash->{$chain}->{action} = 'exists';
2685 } else {
2686 $statushash->{$chain}->{action} = 'update';
2687 }
2688 }
2689 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2690 foreach my $cmd (@{$ruleset->{$chain}}) {
2691 print "\t$cmd\n" if $verbose;
2692 }
2693 }
2694
2695 foreach my $chain (sort keys %$active_chains) {
2696 if (!defined($ruleset->{$chain})) {
2697 my $sig = $active_chains->{$chain};
2698 $statushash->{$chain}->{action} = 'delete';
2699 $statushash->{$chain}->{sig} = $sig;
2700 print "delete $chain ($sig)\n" if $verbose;
2701 }
6158271d 2702 }
2a052ee3 2703
3fa83edf
DM		 2704 return $statushash;
2705}
2706
3fa83edf
DM		 2707sub print_sig_rule {
2708 my ($chain, $sig) = @_;
2709
09d5f68e
DM		 2710 # We just use this to store a SHA1 checksum used to detect changes
2711 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
b6360c3f
DM		 2712}
2713
df7cb349 2714sub get_ruleset_cmdlist {
a84f4d96 2715 my ($ruleset, $verbose) = @_;
3fa83edf 2716
3fa83edf 2717 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
cbb5d6f3 2718
4bd0a9c4
DM		 2719 my ($active_chains, $hooks) = iptables_get_chains();
2720 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3fa83edf
DM		 2721
2722 # create missing chains first
2723 foreach my $chain (sort keys %$ruleset) {
2724 my $stat = $statushash->{$chain};
2725 die "internal error" if !$stat;
2726 next if $stat->{action} ne 'create';
886aba9c 2727
3fa83edf
DM		 2728 $cmdlist .= ":$chain - [0:0]\n";
2729 }
2730
4bd0a9c4
DM		 2731 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2732 if (!$hooks->{$h}) {
2733 $cmdlist .= "-A $h -j PVEFW-$h\n";
2734 }
3fa83edf
DM		 2735 }
2736
2737 foreach my $chain (sort keys %$ruleset) {
2738 my $stat = $statushash->{$chain};
2739 die "internal error" if !$stat;
2740
2741 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2742 $cmdlist .= "-F $chain\n";
2743 foreach my $cmd (@{$ruleset->{$chain}}) {
2744 $cmdlist .= "$cmd\n";
2745 }
2746 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2747 } elsif ($stat->{action} eq 'delete') {
f5d28682 2748 die "internal error"; # this should not happen
3fa83edf
DM		 2749 } elsif ($stat->{action} eq 'exists') {
2750 # do nothing
2751 } else {
2752 die "internal error - unknown status '$stat->{action}'";
2753 }
2754 }
2755
f5d28682
DM		 2756 foreach my $chain (keys %$statushash) {
2757 next if $statushash->{$chain}->{action} ne 'delete';
2758 $cmdlist .= "-F $chain\n";
2759 }
2760 foreach my $chain (keys %$statushash) {
2761 next if $statushash->{$chain}->{action} ne 'delete';
fadb13dd
DM		 2762 next if $chain eq 'PVEFW-INPUT';
2763 next if $chain eq 'PVEFW-OUTPUT';
2764 next if $chain eq 'PVEFW-FORWARD';
f5d28682
DM		 2765 $cmdlist .= "-X $chain\n";
2766 }
2767
3f95d14a 2768 my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
4bd0a9c4 2769
3fa83edf
DM		 2770 $cmdlist .= "COMMIT\n";
2771
3f95d14a 2772 return wantarray ? ($cmdlist, $changes) : $cmdlist;
6b9f68a2
DM		 2773}
2774
34cdedfa 2775sub get_ipset_cmdlist {
dd7a13fd 2776 my ($ruleset, $verbose) = @_;
34cdedfa
AD		 2777
2778 my $cmdlist = "";
2779
dd7a13fd
DM		 2780 my $delete_cmdlist = "";
2781
4bd0a9c4
DM		 2782 my $active_chains = ipset_get_chains();
2783 my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
34cdedfa 2784
e34d0e58 2785 # remove stale _swap chains
30f1b100
DM		 2786 foreach my $chain (keys %$active_chains) {
2787 if ($chain =~ m/^PVEFW-\S+_swap$/) {
2788 $cmdlist .= "destroy $chain\n";
2789 }
2790 }
2791
dd7a13fd
DM		 2792 foreach my $chain (sort keys %$ruleset) {
2793 my $stat = $statushash->{$chain};
2794 die "internal error" if !$stat;
2a052ee3 2795
dd7a13fd
DM		 2796 if ($stat->{action} eq 'create') {
2797 foreach my $cmd (@{$ruleset->{$chain}}) {
34cdedfa
AD		 2798 $cmdlist .= "$cmd\n";
2799 }
dd7a13fd 2800 }
34cdedfa 2801
dd7a13fd
DM		 2802 if ($stat->{action} eq 'update') {
2803 my $chain_swap = $chain."_swap";
cbb5d6f3 2804
dd7a13fd
DM		 2805 foreach my $cmd (@{$ruleset->{$chain}}) {
2806 $cmd =~ s/$chain/$chain_swap/;
2807 $cmdlist .= "$cmd\n";
34cdedfa 2808 }
dd7a13fd
DM		 2809 $cmdlist .= "swap $chain_swap $chain\n";
2810 $cmdlist .= "flush $chain_swap\n";
2811 $cmdlist .= "destroy $chain_swap\n";
2a052ee3 2812 }
34cdedfa 2813
dd7a13fd 2814 }
3f95d14a 2815
dd7a13fd
DM		 2816 foreach my $chain (keys %$statushash) {
2817 next if $statushash->{$chain}->{action} ne 'delete';
2a052ee3 2818
dd7a13fd
DM		 2819 $delete_cmdlist .= "flush $chain\n";
2820 $delete_cmdlist .= "destroy $chain\n";
34cdedfa
AD		 2821 }
2822
dd7a13fd 2823 my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0;
cbb5d6f3 2824
dd7a13fd 2825 return ($cmdlist, $delete_cmdlist, $changes);
34cdedfa
AD		 2826}
2827
6b9f68a2 2828sub apply_ruleset {
34cdedfa 2829 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
6b9f68a2
DM		 2830
2831 enable_bridge_firewall();
2832
cbb5d6f3 2833 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
81a0bf43 2834 get_ipset_cmdlist($ipset_ruleset, undef, $verbose);
6b9f68a2 2835
81a0bf43 2836 my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
2a052ee3 2837
81a0bf43
DM		 2838 if ($verbose) {
2839 if ($ipset_changes) {
2840 print "ipset changes:\n";
2841 print $ipset_create_cmdlist if $ipset_create_cmdlist;
2842 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
2843 }
3f95d14a 2844
81a0bf43
DM		 2845 if ($changes) {
2846 print "iptables changes:\n";
2847 print $cmdlist;
2848 }
2849 }
3fa83edf 2850
2a052ee3 2851 ipset_restore_cmdlist($ipset_create_cmdlist);
34cdedfa 2852
3fa83edf
DM		 2853 iptables_restore_cmdlist($cmdlist);
2854
dd7a13fd 2855 ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2a052ee3 2856
6158271d 2857 # test: re-read status and check if everything is up to date
4bd0a9c4 2858 my $active_chains = iptables_get_chains();
81a0bf43 2859 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
3fa83edf
DM		 2860
2861 my $errors;
2862 foreach my $chain (sort keys %$ruleset) {
2863 my $stat = $statushash->{$chain};
2864 if ($stat->{action} ne 'exists') {
2865 warn "unable to update chain '$chain'\n";
2866 $errors = 1;
2867 }
2868 }
b6360c3f 2869
3fa83edf 2870 die "unable to apply firewall changes\n" if $errors;
46a2ac1f
AD		 2871
2872 update_nf_conntrack_max($hostfw_conf);
2873
2874 update_nf_conntrack_tcp_timeout_established($hostfw_conf);
2875
b6360c3f
DM		 2876}
2877
490cdead
DM		 2878sub update_nf_conntrack_max {
2879 my ($hostfw_conf) = @_;
2880
2881 my $max = 65536; # reasonable default
2882
2883 my $options = $hostfw_conf->{options} || {};
2884
2885 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
2886 $max = $options->{nf_conntrack_max};
2887 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2888 }
2889
2890 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
2891 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
2892
2893 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
2894
2895 if ($current != $max) {
2896 my $hashsize = int($max/4);
2897 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
2898 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
2899 }
2900}
2901
28c082a1
AD		 2902sub update_nf_conntrack_tcp_timeout_established {
2903 my ($hostfw_conf) = @_;
2904
2905 my $options = $hostfw_conf->{options} || {};
2906
2907 my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000;
2908
2909 PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
2910}
2911
c4a2e5ae
DM		 2912sub remove_pvefw_chains {
2913
2914 my ($chash, $hooks) = iptables_get_chains();
2915 my $cmdlist = "*filter\n";
2916
2917 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2918 if ($hooks->{$h}) {
2919 $cmdlist .= "-D $h -j PVEFW-$h\n";
2920 }
2921 }
cbb5d6f3 2922
c4a2e5ae
DM		 2923 foreach my $chain (keys %$chash) {
2924 $cmdlist .= "-F $chain\n";
2925 }
2926
2927 foreach my $chain (keys %$chash) {
2928 $cmdlist .= "-X $chain\n";
2929 }
2930 $cmdlist .= "COMMIT\n";
2931
2932 iptables_restore_cmdlist($cmdlist);
2933}
2934
6b9f68a2
DM		 2935sub update {
2936 my ($start, $verbose) = @_;
2937
2938 my $code = sub {
3dfa8a7f
DM		 2939
2940 my $cluster_conf = load_clusterfw_conf();
2941 my $cluster_options = $cluster_conf->{options};
2942
51e57fee 2943 my $enable = $cluster_options->{enable};
3dfa8a7f 2944
6b9f68a2
DM		 2945 my $status = read_pvefw_status();
2946
3dfa8a7f
DM		 2947 die "Firewall is disabled - cannot start\n" if !$enable && $start;
2948
2949 if (!$enable) {
b22130d3 2950 PVE::Firewall::remove_pvefw_chains();
3dfa8a7f
DM		 2951 print "Firewall disabled\n" if $verbose;
2952 return;
2953 }
2954
2955 my $hostfw_conf = load_hostfw_conf();
2956
2957 my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf);
490cdead 2958
6b9f68a2
DM		 2959 if ($start || $status eq 'active') {
2960
2961 save_pvefw_status('active') if ($status ne 'active');
2962
34cdedfa 2963 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose);
6b9f68a2
DM		 2964 } else {
2965 print "Firewall not active (status = $status)\n" if $verbose;
2966 }
2967 };
2968
2969 run_locked($code);
2970}
2971
2972
b6360c3f 29731;
Firewall test scripts