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Commit | Line | Data |
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b6360c3f DM |
1 | package PVE::Firewall; |
2 | ||
3 | use warnings; | |
4 | use strict; | |
cbb5d6f3 | 5 | use POSIX; |
b6360c3f | 6 | use Data::Dumper; |
09d5f68e | 7 | use Digest::SHA; |
c8301d63 | 8 | use PVE::INotify; |
7ca36671 | 9 | use PVE::Exception qw(raise raise_param_exc); |
e74a87f5 | 10 | use PVE::JSONSchema qw(register_standard_option get_standard_option); |
c8301d63 | 11 | use PVE::Cluster; |
5f0a912c | 12 | use PVE::ProcFSTools; |
009ee3ac | 13 | use PVE::Tools qw($IPV4RE); |
6b9f68a2 | 14 | use File::Basename; |
5e1267a5 DM |
15 | use File::Path; |
16 | use IO::File; | |
ecbea048 | 17 | use Net::IP; |
1a301a8d | 18 | use PVE::Tools qw(run_command lock_file dir_glob_foreach); |
30c1ae52 | 19 | use Encode; |
ecbea048 | 20 | |
63c91681 | 21 | my $hostfw_conf_filename = "/etc/pve/local/host.fw"; |
21053409 DM |
22 | my $pvefw_conf_dir = "/etc/pve/firewall"; |
23 | my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw"; | |
fca39c2c | 24 | |
cbb5d6f3 | 25 | # dynamically include PVE::QemuServer and PVE::OpenVZ |
d9fee004 DM |
26 | # to avoid dependency problems |
27 | my $have_qemu_server; | |
28 | eval { | |
29 | require PVE::QemuServer; | |
30 | $have_qemu_server = 1; | |
31 | }; | |
32 | ||
33 | my $have_pve_manager; | |
34 | eval { | |
35 | require PVE::OpenVZ; | |
36 | $have_pve_manager = 1; | |
37 | }; | |
38 | ||
351052d1 DM |
39 | my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; |
40 | my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; | |
41 | my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; | |
42 | ||
43 | my $max_alias_name_length = 64; | |
44 | my $max_ipset_name_length = 64; | |
45 | my $max_group_name_length = 20; | |
46 | ||
009ee3ac DM |
47 | PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr); |
48 | sub pve_verify_ipv4_or_cidr { | |
49 | my ($cidr, $noerr) = @_; | |
50 | ||
30f1b100 | 51 | if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) { |
e34d0e58 | 52 | return $cidr if Net::IP->new($cidr); |
7c619bbb DM |
53 | return undef if $noerr; |
54 | die Net::IP::Error() . "\n"; | |
55 | } | |
56 | return undef if $noerr; | |
57 | die "value does not look like a valid IP address or CIDR network\n"; | |
58 | } | |
59 | ||
60 | PVE::JSONSchema::register_format('IPv4orCIDRorAlias', \&pve_verify_ipv4_or_cidr_or_alias); | |
61 | sub pve_verify_ipv4_or_cidr_or_alias { | |
62 | my ($cidr, $noerr) = @_; | |
63 | ||
64 | return if $cidr =~ m/^(?:$ip_alias_pattern)$/; | |
65 | ||
66 | if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) { | |
67 | return $cidr if Net::IP->new($cidr); | |
30f1b100 DM |
68 | return undef if $noerr; |
69 | die Net::IP::Error() . "\n"; | |
009ee3ac DM |
70 | } |
71 | return undef if $noerr; | |
72 | die "value does not look like a valid IP address or CIDR network\n"; | |
73 | } | |
74 | ||
e74a87f5 DM |
75 | PVE::JSONSchema::register_standard_option('ipset-name', { |
76 | description => "IP set name.", | |
77 | type => 'string', | |
351052d1 | 78 | pattern => $ipset_name_pattern, |
387d0ffc | 79 | minLength => 2, |
351052d1 | 80 | maxLength => $max_ipset_name_length, |
387d0ffc DM |
81 | }); |
82 | ||
81d574a7 DM |
83 | PVE::JSONSchema::register_standard_option('pve-fw-alias', { |
84 | description => "Alias name.", | |
85 | type => 'string', | |
351052d1 | 86 | pattern => $ip_alias_pattern, |
81d574a7 | 87 | minLength => 2, |
351052d1 | 88 | maxLength => $max_alias_name_length, |
81d574a7 DM |
89 | }); |
90 | ||
6302c41f DM |
91 | PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => { |
92 | description => "Log level.", | |
e34d0e58 | 93 | type => 'string', |
6302c41f DM |
94 | enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'], |
95 | optional => 1, | |
96 | }); | |
97 | ||
387d0ffc DM |
98 | PVE::JSONSchema::register_standard_option('pve-security-group-name', { |
99 | description => "Security Group name.", | |
100 | type => 'string', | |
44be8ceb | 101 | pattern => $security_group_name_pattern, |
387d0ffc | 102 | minLength => 2, |
351052d1 | 103 | maxLength => $max_group_name_length, |
e74a87f5 | 104 | }); |
009ee3ac | 105 | |
cbb5d6f3 DM |
106 | my $feature_ipset_nomatch = 0; |
107 | eval { | |
108 | my (undef, undef, $release) = POSIX::uname(); | |
109 | if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) { | |
110 | my ($major, $minor) = ($1, $2); | |
111 | $feature_ipset_nomatch = 1 if ($major > 3) || | |
112 | ($major == 3 && $minor >= 7); | |
113 | } | |
114 | ||
115 | }; | |
116 | ||
5e1267a5 | 117 | use Data::Dumper; |
b6360c3f | 118 | |
c8301d63 DM |
119 | my $nodename = PVE::INotify::nodename(); |
120 | ||
06320eb0 DM |
121 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
122 | ||
56f313f7 | 123 | my $default_log_level = 'nolog'; # avoid logs by default |
2d404ffc DM |
124 | |
125 | my $log_level_hash = { | |
126 | debug => 7, | |
127 | info => 6, | |
128 | notice => 5, | |
129 | warning => 4, | |
130 | err => 3, | |
131 | crit => 2, | |
132 | alert => 1, | |
133 | emerg => 0, | |
134 | }; | |
135 | ||
857f62c8 | 136 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 137 | my $pve_fw_macros = { |
857f62c8 | 138 | 'Amanda' => [ |
ebd54ae9 | 139 | "Amanda Backup", |
857f62c8 DM |
140 | { action => 'PARAM', proto => 'udp', dport => '10080' }, |
141 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
142 | ], | |
143 | 'Auth' => [ | |
ebd54ae9 | 144 | "Auth (identd) traffic", |
857f62c8 DM |
145 | { action => 'PARAM', proto => 'tcp', dport => '113' }, |
146 | ], | |
147 | 'BGP' => [ | |
ebd54ae9 | 148 | "Border Gateway Protocol traffic", |
857f62c8 DM |
149 | { action => 'PARAM', proto => 'tcp', dport => '179' }, |
150 | ], | |
151 | 'BitTorrent' => [ | |
ebd54ae9 | 152 | "BitTorrent traffic for BitTorrent 3.1 and earlier", |
961b4928 | 153 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
154 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
155 | ], | |
156 | 'BitTorrent32' => [ | |
ebd54ae9 | 157 | "BitTorrent traffic for BitTorrent 3.2 and later", |
857f62c8 DM |
158 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, |
159 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
160 | ], | |
161 | 'CVS' => [ | |
ebd54ae9 | 162 | "Concurrent Versions System pserver traffic", |
857f62c8 DM |
163 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, |
164 | ], | |
165 | 'Citrix' => [ | |
ebd54ae9 | 166 | "Citrix/ICA traffic (ICA, ICA Browser, CGP)", |
857f62c8 DM |
167 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, |
168 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
169 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
170 | ], | |
171 | 'DAAP' => [ | |
ebd54ae9 | 172 | "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)", |
857f62c8 DM |
173 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, |
174 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
175 | ], | |
176 | 'DCC' => [ | |
ebd54ae9 | 177 | "Distributed Checksum Clearinghouse spam filtering mechanism", |
857f62c8 DM |
178 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, |
179 | ], | |
180 | 'DHCPfwd' => [ | |
d2c3266d | 181 | "Forwarded DHCP traffic", |
857f62c8 | 182 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, |
857f62c8 DM |
183 | ], |
184 | 'DNS' => [ | |
ebd54ae9 | 185 | "Domain Name System traffic (upd and tcp)", |
857f62c8 DM |
186 | { action => 'PARAM', proto => 'udp', dport => '53' }, |
187 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
188 | ], | |
189 | 'Distcc' => [ | |
ebd54ae9 | 190 | "Distributed Compiler service", |
857f62c8 DM |
191 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, |
192 | ], | |
857f62c8 | 193 | 'FTP' => [ |
ebd54ae9 | 194 | "File Transfer Protocol", |
857f62c8 DM |
195 | { action => 'PARAM', proto => 'tcp', dport => '21' }, |
196 | ], | |
197 | 'Finger' => [ | |
ebd54ae9 | 198 | "Finger protocol (RFC 742)", |
857f62c8 DM |
199 | { action => 'PARAM', proto => 'tcp', dport => '79' }, |
200 | ], | |
201 | 'GNUnet' => [ | |
ebd54ae9 | 202 | "GNUnet secure peer-to-peer networking traffic", |
857f62c8 DM |
203 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, |
204 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
205 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
206 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
207 | ], | |
208 | 'GRE' => [ | |
d2c3266d | 209 | "Generic Routing Encapsulation tunneling protocol", |
857f62c8 | 210 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
211 | ], |
212 | 'Git' => [ | |
ebd54ae9 | 213 | "Git distributed revision control traffic", |
857f62c8 DM |
214 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, |
215 | ], | |
857f62c8 | 216 | 'HKP' => [ |
ebd54ae9 | 217 | "OpenPGP HTTP keyserver protocol traffic", |
857f62c8 DM |
218 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, |
219 | ], | |
220 | 'HTTP' => [ | |
ebd54ae9 | 221 | "Hypertext Transfer Protocol (WWW)", |
961b4928 DM |
222 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
223 | ], | |
857f62c8 | 224 | 'HTTPS' => [ |
ebd54ae9 | 225 | "Hypertext Transfer Protocol (WWW) over SSL", |
857f62c8 DM |
226 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
227 | ], | |
228 | 'ICPV2' => [ | |
ebd54ae9 | 229 | "Internet Cache Protocol V2 (Squid) traffic", |
857f62c8 DM |
230 | { action => 'PARAM', proto => 'udp', dport => '3130' }, |
231 | ], | |
232 | 'ICQ' => [ | |
ebd54ae9 | 233 | "AOL Instant Messenger traffic", |
857f62c8 DM |
234 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, |
235 | ], | |
236 | 'IMAP' => [ | |
ebd54ae9 | 237 | "Internet Message Access Protocol", |
857f62c8 DM |
238 | { action => 'PARAM', proto => 'tcp', dport => '143' }, |
239 | ], | |
240 | 'IMAPS' => [ | |
ebd54ae9 | 241 | "Internet Message Access Protocol over SSL", |
857f62c8 DM |
242 | { action => 'PARAM', proto => 'tcp', dport => '993' }, |
243 | ], | |
244 | 'IPIP' => [ | |
d2c3266d | 245 | "IPIP capsulation traffic", |
857f62c8 | 246 | { action => 'PARAM', proto => '94' }, |
857f62c8 | 247 | ], |
857f62c8 | 248 | 'IPsec' => [ |
d2c3266d | 249 | "IPsec traffic", |
857f62c8 DM |
250 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
251 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
252 | ], |
253 | 'IPsecah' => [ | |
d2c3266d | 254 | "IPsec authentication (AH) traffic", |
857f62c8 DM |
255 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
256 | { action => 'PARAM', proto => '51' }, | |
857f62c8 DM |
257 | ], |
258 | 'IPsecnat' => [ | |
d2c3266d | 259 | "IPsec traffic and Nat-Traversal", |
857f62c8 DM |
260 | { action => 'PARAM', proto => 'udp', dport => '500' }, |
261 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
262 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
263 | ], |
264 | 'IRC' => [ | |
ebd54ae9 | 265 | "Internet Relay Chat traffic", |
857f62c8 DM |
266 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, |
267 | ], | |
857f62c8 | 268 | 'Jetdirect' => [ |
ebd54ae9 | 269 | "HP Jetdirect printing", |
857f62c8 DM |
270 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, |
271 | ], | |
272 | 'L2TP' => [ | |
ebd54ae9 | 273 | "Layer 2 Tunneling Protocol traffic", |
857f62c8 | 274 | { action => 'PARAM', proto => 'udp', dport => '1701' }, |
857f62c8 DM |
275 | ], |
276 | 'LDAP' => [ | |
ebd54ae9 | 277 | "Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
278 | { action => 'PARAM', proto => 'tcp', dport => '389' }, |
279 | ], | |
280 | 'LDAPS' => [ | |
ebd54ae9 | 281 | "Secure Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
282 | { action => 'PARAM', proto => 'tcp', dport => '636' }, |
283 | ], | |
284 | 'MSNP' => [ | |
ebd54ae9 | 285 | "Microsoft Notification Protocol", |
857f62c8 DM |
286 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, |
287 | ], | |
288 | 'MSSQL' => [ | |
ebd54ae9 | 289 | "Microsoft SQL Server", |
857f62c8 DM |
290 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, |
291 | ], | |
292 | 'Mail' => [ | |
ebd54ae9 | 293 | "Mail traffic (SMTP, SMTPS, Submission)", |
857f62c8 DM |
294 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
295 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
296 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
297 | ], | |
298 | 'Munin' => [ | |
ebd54ae9 | 299 | "Munin networked resource monitoring traffic", |
857f62c8 DM |
300 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, |
301 | ], | |
302 | 'MySQL' => [ | |
ebd54ae9 | 303 | "MySQL server", |
857f62c8 DM |
304 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, |
305 | ], | |
306 | 'NNTP' => [ | |
ebd54ae9 | 307 | "NNTP traffic (Usenet).", |
857f62c8 DM |
308 | { action => 'PARAM', proto => 'tcp', dport => '119' }, |
309 | ], | |
310 | 'NNTPS' => [ | |
ebd54ae9 | 311 | "Encrypted NNTP traffic (Usenet)", |
857f62c8 DM |
312 | { action => 'PARAM', proto => 'tcp', dport => '563' }, |
313 | ], | |
314 | 'NTP' => [ | |
ebd54ae9 | 315 | "Network Time Protocol (ntpd)", |
857f62c8 DM |
316 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
317 | ], | |
857f62c8 | 318 | 'OSPF' => [ |
ebd54ae9 | 319 | "OSPF multicast traffic", |
857f62c8 DM |
320 | { action => 'PARAM', proto => '89' }, |
321 | ], | |
322 | 'OpenVPN' => [ | |
ebd54ae9 | 323 | "OpenVPN traffic", |
857f62c8 DM |
324 | { action => 'PARAM', proto => 'udp', dport => '1194' }, |
325 | ], | |
326 | 'PCA' => [ | |
ebd54ae9 | 327 | "Symantec PCAnywere (tm)", |
857f62c8 DM |
328 | { action => 'PARAM', proto => 'udp', dport => '5632' }, |
329 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
330 | ], | |
331 | 'POP3' => [ | |
ebd54ae9 | 332 | "POP3 traffic", |
857f62c8 DM |
333 | { action => 'PARAM', proto => 'tcp', dport => '110' }, |
334 | ], | |
335 | 'POP3S' => [ | |
ebd54ae9 | 336 | "Encrypted POP3 traffic", |
857f62c8 DM |
337 | { action => 'PARAM', proto => 'tcp', dport => '995' }, |
338 | ], | |
339 | 'PPtP' => [ | |
ebd54ae9 | 340 | "Point-to-Point Tunneling Protocol", |
857f62c8 | 341 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
342 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, |
343 | ], | |
344 | 'Ping' => [ | |
ebd54ae9 | 345 | "ICMP echo request", |
269d4f13 | 346 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
347 | ], |
348 | 'PostgreSQL' => [ | |
ebd54ae9 | 349 | "PostgreSQL server", |
857f62c8 DM |
350 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, |
351 | ], | |
352 | 'Printer' => [ | |
ebd54ae9 | 353 | "Line Printer protocol printing", |
857f62c8 DM |
354 | { action => 'PARAM', proto => 'tcp', dport => '515' }, |
355 | ], | |
356 | 'RDP' => [ | |
ebd54ae9 | 357 | "Microsoft Remote Desktop Protocol traffic", |
857f62c8 DM |
358 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, |
359 | ], | |
d2c3266d | 360 | 'RIP' => [ |
ebd54ae9 | 361 | "Routing Information Protocol (bidirectional)", |
857f62c8 | 362 | { action => 'PARAM', proto => 'udp', dport => '520' }, |
857f62c8 DM |
363 | ], |
364 | 'RNDC' => [ | |
ebd54ae9 | 365 | "BIND remote management protocol", |
857f62c8 DM |
366 | { action => 'PARAM', proto => 'tcp', dport => '953' }, |
367 | ], | |
368 | 'Razor' => [ | |
ebd54ae9 | 369 | "Razor Antispam System", |
857f62c8 DM |
370 | { action => 'ACCEPT', proto => 'tcp', dport => '2703' }, |
371 | ], | |
372 | 'Rdate' => [ | |
ebd54ae9 | 373 | "Remote time retrieval (rdate)", |
857f62c8 DM |
374 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
375 | ], | |
376 | 'Rsync' => [ | |
ebd54ae9 | 377 | "Rsync server", |
857f62c8 DM |
378 | { action => 'PARAM', proto => 'tcp', dport => '873' }, |
379 | ], | |
380 | 'SANE' => [ | |
ebd54ae9 | 381 | "SANE network scanning", |
857f62c8 DM |
382 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, |
383 | ], | |
384 | 'SMB' => [ | |
ebd54ae9 | 385 | "Microsoft SMB traffic", |
857f62c8 DM |
386 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
387 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
388 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
389 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
390 | ], | |
857f62c8 | 391 | 'SMBswat' => [ |
ebd54ae9 | 392 | "Samba Web Administration Tool", |
857f62c8 DM |
393 | { action => 'PARAM', proto => 'tcp', dport => '901' }, |
394 | ], | |
395 | 'SMTP' => [ | |
ebd54ae9 | 396 | "Simple Mail Transfer Protocol", |
857f62c8 DM |
397 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
398 | ], | |
399 | 'SMTPS' => [ | |
ebd54ae9 | 400 | "Encrypted Simple Mail Transfer Protocol", |
857f62c8 DM |
401 | { action => 'PARAM', proto => 'tcp', dport => '465' }, |
402 | ], | |
403 | 'SNMP' => [ | |
ebd54ae9 | 404 | "Simple Network Management Protocol", |
857f62c8 DM |
405 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, |
406 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
407 | ], | |
408 | 'SPAMD' => [ | |
ebd54ae9 | 409 | "Spam Assassin SPAMD traffic", |
857f62c8 DM |
410 | { action => 'PARAM', proto => 'tcp', dport => '783' }, |
411 | ], | |
412 | 'SSH' => [ | |
ebd54ae9 | 413 | "Secure shell traffic", |
857f62c8 DM |
414 | { action => 'PARAM', proto => 'tcp', dport => '22' }, |
415 | ], | |
416 | 'SVN' => [ | |
ebd54ae9 | 417 | "Subversion server (svnserve)", |
857f62c8 DM |
418 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, |
419 | ], | |
420 | 'SixXS' => [ | |
ebd54ae9 | 421 | "SixXS IPv6 Deployment and Tunnel Broker", |
857f62c8 DM |
422 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, |
423 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
424 | { action => 'PARAM', proto => '41' }, | |
425 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
426 | ], | |
427 | 'Squid' => [ | |
ebd54ae9 | 428 | "Squid web proxy traffic", |
857f62c8 DM |
429 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, |
430 | ], | |
431 | 'Submission' => [ | |
ebd54ae9 | 432 | "Mail message submission traffic", |
857f62c8 DM |
433 | { action => 'PARAM', proto => 'tcp', dport => '587' }, |
434 | ], | |
435 | 'Syslog' => [ | |
ebd54ae9 | 436 | "Syslog protocol (RFC 5424) traffic", |
857f62c8 DM |
437 | { action => 'PARAM', proto => 'udp', dport => '514' }, |
438 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
439 | ], | |
440 | 'TFTP' => [ | |
ebd54ae9 | 441 | "Trivial File Transfer Protocol traffic", |
857f62c8 DM |
442 | { action => 'PARAM', proto => 'udp', dport => '69' }, |
443 | ], | |
444 | 'Telnet' => [ | |
ebd54ae9 | 445 | "Telnet traffic", |
857f62c8 DM |
446 | { action => 'PARAM', proto => 'tcp', dport => '23' }, |
447 | ], | |
448 | 'Telnets' => [ | |
ebd54ae9 | 449 | "Telnet over SSL", |
857f62c8 DM |
450 | { action => 'PARAM', proto => 'tcp', dport => '992' }, |
451 | ], | |
452 | 'Time' => [ | |
ebd54ae9 | 453 | "RFC 868 Time protocol", |
857f62c8 DM |
454 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
455 | ], | |
456 | 'Trcrt' => [ | |
ebd54ae9 | 457 | "Traceroute (for up to 30 hops) traffic", |
857f62c8 | 458 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, |
269d4f13 | 459 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
460 | ], |
461 | 'VNC' => [ | |
93be4333 DM |
462 | "VNC traffic for VNC display's 0 - 99", |
463 | { action => 'PARAM', proto => 'tcp', dport => '5900:5999' }, | |
857f62c8 DM |
464 | ], |
465 | 'VNCL' => [ | |
ebd54ae9 | 466 | "VNC traffic from Vncservers to Vncviewers in listen mode", |
857f62c8 DM |
467 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, |
468 | ], | |
469 | 'Web' => [ | |
ebd54ae9 | 470 | "WWW traffic (HTTP and HTTPS)", |
857f62c8 | 471 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
961b4928 DM |
472 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
473 | ], | |
857f62c8 | 474 | 'Webcache' => [ |
ebd54ae9 | 475 | "Web Cache/Proxy traffic (port 8080)", |
857f62c8 DM |
476 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, |
477 | ], | |
478 | 'Webmin' => [ | |
ebd54ae9 | 479 | "Webmin traffic", |
857f62c8 DM |
480 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, |
481 | ], | |
482 | 'Whois' => [ | |
ebd54ae9 | 483 | "Whois (nicname, RFC 3912) traffic", |
857f62c8 DM |
484 | { action => 'PARAM', proto => 'tcp', dport => '43' }, |
485 | ], | |
961b4928 DM |
486 | }; |
487 | ||
488 | my $pve_fw_parsed_macros; | |
ebd54ae9 | 489 | my $pve_fw_macro_descr; |
961b4928 | 490 | my $pve_fw_preferred_macro_names = {}; |
3a616aa0 | 491 | |
5547adf7 AD |
492 | my $pve_std_chains = {}; |
493 | $pve_std_chains->{4} = { | |
d8f2505e DM |
494 | 'PVEFW-SET-ACCEPT-MARK' => [ |
495 | "-j MARK --set-mark 1", | |
496 | ], | |
79929d9c DM |
497 | 'PVEFW-DropBroadcast' => [ |
498 | # same as shorewall 'Broadcast' | |
499 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
500 | # we can use this to reduce logging | |
501 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
502 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
503 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
cbb5d6f3 | 504 | { action => 'DROP', dest => '224.0.0.0/4' }, |
79929d9c DM |
505 | ], |
506 | 'PVEFW-reject' => [ | |
507 | # same as shorewall 'reject' | |
508 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
cbb5d6f3 | 509 | { action => 'DROP', source => '224.0.0.0/4' }, |
79929d9c DM |
510 | { action => 'DROP', proto => 'icmp' }, |
511 | "-p tcp -j REJECT --reject-with tcp-reset", | |
512 | "-p udp -j REJECT --reject-with icmp-port-unreachable", | |
513 | "-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
514 | "-j REJECT --reject-with icmp-host-prohibited", | |
515 | ], | |
516 | 'PVEFW-Drop' => [ | |
cbb5d6f3 | 517 | # same as shorewall 'Drop', which is equal to DROP, |
79929d9c DM |
518 | # but REJECT/DROP some packages to reduce logging, |
519 | # and ACCEPT critical ICMP types | |
520 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
521 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
522 | { action => 'PVEFW-DropBroadcast' }, | |
523 | # ACCEPT critical ICMP types | |
524 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
525 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
526 | # Drop packets with INVALID state | |
527 | "-m conntrack --ctstate INVALID -j DROP", | |
528 | # Drop Microsoft SMB noise | |
529 | { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
530 | { action => 'DROP', proto => 'udp', dport => '137:139'}, | |
531 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
532 | { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
533 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
534 | # Drop new/NotSyn traffic so that it doesn't get logged | |
535 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
536 | # Drop DNS replies | |
537 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
538 | ], | |
539 | 'PVEFW-Reject' => [ | |
cbb5d6f3 | 540 | # same as shorewall 'Reject', which is equal to Reject, |
79929d9c DM |
541 | # but REJECT/DROP some packages to reduce logging, |
542 | # and ACCEPT critical ICMP types | |
543 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
544 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
545 | { action => 'PVEFW-DropBroadcast' }, | |
546 | # ACCEPT critical ICMP types | |
547 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
548 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
549 | # Drop packets with INVALID state | |
550 | "-m conntrack --ctstate INVALID -j DROP", | |
551 | # Drop Microsoft SMB noise | |
552 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
553 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, | |
554 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
555 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
556 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
557 | # Drop new/NotSyn traffic so that it doesn't get logged | |
558 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
559 | # Drop DNS replies | |
560 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
561 | ], | |
d86659ef DM |
562 | 'PVEFW-tcpflags' => [ |
563 | # same as shorewall tcpflags action. | |
564 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
565 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags", | |
566 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags", | |
567 | "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags", | |
568 | "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags", | |
569 | "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags", | |
570 | ], | |
bee633ab DM |
571 | 'PVEFW-smurfs' => [ |
572 | # same as shorewall smurfs action | |
573 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
574 | "-s 0.0.0.0/32 -j RETURN", | |
575 | "-m addrtype --src-type BROADCAST -g PVEFW-smurflog", | |
576 | "-s 224.0.0.0/4 -g PVEFW-smurflog", | |
577 | ], | |
d8f2505e DM |
578 | }; |
579 | ||
4b586518 DM |
580 | # iptables -p icmp -h |
581 | my $icmp_type_names = { | |
582 | any => 1, | |
583 | 'echo-reply' => 1, | |
584 | 'destination-unreachable' => 1, | |
585 | 'network-unreachable' => 1, | |
586 | 'host-unreachable' => 1, | |
587 | 'protocol-unreachable' => 1, | |
588 | 'port-unreachable' => 1, | |
589 | 'fragmentation-needed' => 1, | |
590 | 'source-route-failed' => 1, | |
591 | 'network-unknown' => 1, | |
592 | 'host-unknown' => 1, | |
593 | 'network-prohibited' => 1, | |
594 | 'host-prohibited' => 1, | |
595 | 'TOS-network-unreachable' => 1, | |
596 | 'TOS-host-unreachable' => 1, | |
597 | 'communication-prohibited' => 1, | |
598 | 'host-precedence-violation' => 1, | |
599 | 'precedence-cutoff' => 1, | |
600 | 'source-quench' => 1, | |
601 | 'redirect' => 1, | |
602 | 'network-redirect' => 1, | |
603 | 'host-redirect' => 1, | |
604 | 'TOS-network-redirect' => 1, | |
605 | 'TOS-host-redirect' => 1, | |
606 | 'echo-request' => 1, | |
607 | 'router-advertisement' => 1, | |
608 | 'router-solicitation' => 1, | |
609 | 'time-exceeded' => 1, | |
610 | 'ttl-zero-during-transit' => 1, | |
611 | 'ttl-zero-during-reassembly' => 1, | |
612 | 'parameter-problem' => 1, | |
613 | 'ip-header-bad' => 1, | |
614 | 'required-option-missing' => 1, | |
615 | 'timestamp-request' => 1, | |
616 | 'timestamp-reply' => 1, | |
617 | 'address-mask-request' => 1, | |
618 | 'address-mask-reply' => 1, | |
619 | }; | |
620 | ||
54cd19a8 | 621 | sub init_firewall_macros { |
6158271d | 622 | |
961b4928 | 623 | $pve_fw_parsed_macros = {}; |
9aab3127 | 624 | |
961b4928 | 625 | foreach my $k (keys %$pve_fw_macros) { |
e5076eee DM |
626 | my $lc_name = lc($k); |
627 | my $macro = $pve_fw_macros->{$k}; | |
ebd54ae9 DM |
628 | if (!ref($macro->[0])) { |
629 | $pve_fw_macro_descr->{$k} = shift @$macro; | |
630 | } | |
e5076eee DM |
631 | $pve_fw_preferred_macro_names->{$lc_name} = $k; |
632 | $pve_fw_parsed_macros->{$k} = $macro; | |
961b4928 | 633 | } |
9aab3127 DM |
634 | } |
635 | ||
54cd19a8 DM |
636 | init_firewall_macros(); |
637 | ||
ebd54ae9 DM |
638 | sub get_macros { |
639 | return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros; | |
640 | } | |
641 | ||
fcba0beb DM |
642 | my $etc_services; |
643 | ||
644 | sub get_etc_services { | |
645 | ||
646 | return $etc_services if $etc_services; | |
647 | ||
648 | my $filename = "/etc/services"; | |
649 | ||
650 | my $fh = IO::File->new($filename, O_RDONLY); | |
651 | if (!$fh) { | |
652 | warn "unable to read '$filename' - $!\n"; | |
653 | return {}; | |
654 | } | |
655 | ||
656 | my $services = {}; | |
657 | ||
658 | while (my $line = <$fh>) { | |
659 | chomp ($line); | |
660 | next if $line =~m/^#/; | |
661 | next if ($line =~m/^\s*$/); | |
662 | ||
663 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) { | |
664 | $services->{byid}->{$2}->{name} = $1; | |
35b66e9d | 665 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
666 | $services->{byid}->{$2}->{$3} = 1; |
667 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
668 | } | |
669 | } | |
670 | ||
671 | close($fh); | |
672 | ||
6158271d DM |
673 | $etc_services = $services; |
674 | ||
3a616aa0 | 675 | |
fcba0beb DM |
676 | return $etc_services; |
677 | } | |
678 | ||
679 | my $etc_protocols; | |
680 | ||
681 | sub get_etc_protocols { | |
682 | return $etc_protocols if $etc_protocols; | |
683 | ||
684 | my $filename = "/etc/protocols"; | |
685 | ||
686 | my $fh = IO::File->new($filename, O_RDONLY); | |
687 | if (!$fh) { | |
688 | warn "unable to read '$filename' - $!\n"; | |
689 | return {}; | |
690 | } | |
691 | ||
692 | my $protocols = {}; | |
693 | ||
694 | while (my $line = <$fh>) { | |
695 | chomp ($line); | |
696 | next if $line =~m/^#/; | |
697 | next if ($line =~m/^\s*$/); | |
698 | ||
699 | if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) { | |
700 | $protocols->{byid}->{$2}->{name} = $1; | |
701 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
702 | } | |
703 | } | |
704 | ||
705 | close($fh); | |
706 | ||
707 | $etc_protocols = $protocols; | |
708 | ||
709 | return $etc_protocols; | |
710 | } | |
711 | ||
525778d7 | 712 | my $ipv4_mask_hash_localnet = { |
93be4333 DM |
713 | '255.255.0.0' => 16, |
714 | '255.255.128.0' => 17, | |
715 | '255.255.192.0' => 18, | |
716 | '255.255.224.0' => 19, | |
717 | '255.255.240.0' => 20, | |
718 | '255.255.248.0' => 21, | |
719 | '255.255.252.0' => 22, | |
720 | '255.255.254.0' => 23, | |
721 | '255.255.255.0' => 24, | |
722 | '255.255.255.128' => 25, | |
723 | '255.255.255.192' => 26, | |
724 | '255.255.255.224' => 27, | |
725 | '255.255.255.240' => 28, | |
726 | '255.255.255.248' => 29, | |
727 | '255.255.255.252' => 30, | |
728 | }; | |
729 | ||
525778d7 | 730 | my $__local_network; |
93be4333 | 731 | |
525778d7 | 732 | sub local_network { |
ac633d30 | 733 | my ($new_value) = @_; |
93be4333 | 734 | |
525778d7 | 735 | $__local_network = $new_value if defined($new_value); |
ac633d30 | 736 | |
525778d7 | 737 | return $__local_network if defined($__local_network); |
93be4333 DM |
738 | |
739 | eval { | |
740 | my $nodename = PVE::INotify::nodename(); | |
741 | ||
742 | my $ip = PVE::Cluster::remote_node_ip($nodename); | |
743 | ||
744 | my $testip = Net::IP->new($ip); | |
bfc488f6 | 745 | |
93be4333 DM |
746 | my $routes = PVE::ProcFSTools::read_proc_net_route(); |
747 | foreach my $entry (@$routes) { | |
525778d7 | 748 | my $mask = $ipv4_mask_hash_localnet->{$entry->{mask}}; |
93be4333 DM |
749 | next if !defined($mask); |
750 | return if $mask eq '0.0.0.0'; | |
751 | my $cidr = "$entry->{dest}/$mask"; | |
752 | my $testnet = Net::IP->new($cidr); | |
753 | if ($testnet->overlaps($testip)) { | |
525778d7 | 754 | $__local_network = $cidr; |
93be4333 DM |
755 | return; |
756 | } | |
757 | } | |
758 | }; | |
759 | warn $@ if $@; | |
760 | ||
525778d7 | 761 | return $__local_network; |
93be4333 DM |
762 | } |
763 | ||
30150dca DM |
764 | # ipset names are limited to 31 characters, and we use '_swap' |
765 | # suffix for atomic update, for example PVEFW-${VMID}-${ipset_name}_swap | |
766 | ||
767 | my $max_iptables_ipset_name_length = 31 - length("_swap"); | |
708ba714 DM |
768 | |
769 | sub compute_ipset_chain_name { | |
770 | my ($vmid, $ipset_name) = @_; | |
771 | ||
772 | $vmid = 0 if !defined($vmid); | |
773 | ||
774 | my $id = "$vmid-${ipset_name}"; | |
775 | ||
776 | ||
e2c62733 | 777 | if ((length($id) + 6) > $max_iptables_ipset_name_length) { |
708ba714 DM |
778 | $id = PVE::Tools::fnv31a_hex($id); |
779 | } | |
780 | ||
781 | return "PVEFW-$id"; | |
782 | } | |
783 | ||
b692f42c DM |
784 | sub compute_ipfilter_ipset_name { |
785 | my ($iface) = @_; | |
786 | ||
787 | return "ipfilter-$iface"; | |
788 | } | |
789 | ||
ecbea048 DM |
790 | sub parse_address_list { |
791 | my ($str) = @_; | |
792 | ||
e2c62733 DM |
793 | if ($str =~ m/^(\+)(\S+)$/) { # ipset ref |
794 | die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1); | |
795 | return; | |
796 | } | |
797 | ||
798 | if ($str =~ m/^${ip_alias_pattern}$/) { | |
799 | die "alias name too long\n" if length($str) > $max_alias_name_length; | |
800 | return; | |
801 | } | |
d72beb8e | 802 | |
3162af6b DM |
803 | my $count = 0; |
804 | my $iprange = 0; | |
7697c041 AD |
805 | my $ipversion = undef; |
806 | ||
3162af6b DM |
807 | foreach my $elem (split(/,/, $str)) { |
808 | $count++; | |
809 | if (!Net::IP->new($elem)) { | |
ecbea048 DM |
810 | my $err = Net::IP::Error(); |
811 | die "invalid IP address: $err\n"; | |
812 | } | |
3162af6b | 813 | $iprange = 1 if $elem =~ m/-/; |
7697c041 | 814 | $ipversion = Net::IP::ip_get_version($elem); #fixme : don't work with range |
ecbea048 | 815 | } |
e34d0e58 | 816 | |
3162af6b | 817 | die "you can use a range in a list\n" if $iprange && $count > 1; |
7697c041 | 818 | return $ipversion; |
ecbea048 | 819 | } |
dddd9413 | 820 | |
fcba0beb DM |
821 | sub parse_port_name_number_or_range { |
822 | my ($str) = @_; | |
823 | ||
824 | my $services = PVE::Firewall::get_etc_services(); | |
7ca36671 | 825 | my $count = 0; |
041b7e8e DM |
826 | my $icmp_port = 0; |
827 | ||
fcba0beb | 828 | foreach my $item (split(/,/, $str)) { |
7ca36671 DM |
829 | $count++; |
830 | if ($item =~ m/^(\d+):(\d+)$/) { | |
831 | my ($port1, $port2) = ($1, $2); | |
832 | die "invalid port '$port1'\n" if $port1 > 65535; | |
833 | die "invalid port '$port2'\n" if $port2 > 65535; | |
834 | } elsif ($item =~ m/^(\d+)$/) { | |
835 | my $port = $1; | |
836 | die "invalid port '$port'\n" if $port > 65535; | |
837 | } else { | |
041b7e8e DM |
838 | if ($icmp_type_names->{$item}) { |
839 | $icmp_port = 1; | |
840 | } else { | |
e34d0e58 | 841 | die "invalid port '$item'\n" if !$services->{byname}->{$item}; |
041b7e8e | 842 | } |
fcba0beb DM |
843 | } |
844 | } | |
845 | ||
041b7e8e DM |
846 | die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1; |
847 | ||
7ca36671 | 848 | return $count; |
fcba0beb DM |
849 | } |
850 | ||
54cd19a8 DM |
851 | PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec); |
852 | sub pve_fw_verify_port_spec { | |
853 | my ($portstr) = @_; | |
854 | ||
7ca36671 | 855 | parse_port_name_number_or_range($portstr); |
54cd19a8 DM |
856 | |
857 | return $portstr; | |
858 | } | |
859 | ||
d31689ee DM |
860 | PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec); |
861 | sub pve_fw_verify_addr_spec { | |
54cd19a8 DM |
862 | my ($list) = @_; |
863 | ||
864 | parse_address_list($list); | |
865 | ||
866 | return $list; | |
867 | } | |
868 | ||
869 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
870 | sub pve_fw_verify_protocol_spec { | |
871 | my ($proto) = @_; | |
872 | ||
873 | my $protocols = get_etc_protocols(); | |
874 | ||
875 | die "unknown protocol '$proto'\n" if $proto && | |
876 | !(defined($protocols->{byname}->{$proto}) || | |
877 | defined($protocols->{byid}->{$proto})); | |
878 | ||
879 | return $proto; | |
880 | } | |
881 | ||
882 | ||
d1c53b3e | 883 | # helper function for API |
d1c53b3e | 884 | |
5d38d64f DM |
885 | sub copy_opject_with_digest { |
886 | my ($object) = @_; | |
887 | ||
888 | my $sha = Digest::SHA->new('sha1'); | |
889 | ||
890 | my $res = {}; | |
891 | foreach my $k (sort keys %$object) { | |
892 | my $v = $object->{$k}; | |
0365eb68 | 893 | next if !defined($v); |
5d38d64f DM |
894 | $res->{$k} = $v; |
895 | $sha->add($k, ':', $v, "\n"); | |
896 | } | |
897 | ||
55e686c7 | 898 | my $digest = $sha->hexdigest; |
5d38d64f DM |
899 | |
900 | $res->{digest} = $digest; | |
901 | ||
902 | return wantarray ? ($res, $digest) : $res; | |
903 | } | |
904 | ||
905 | sub copy_list_with_digest { | |
906 | my ($list) = @_; | |
907 | ||
908 | my $sha = Digest::SHA->new('sha1'); | |
909 | ||
910 | my $res = []; | |
911 | foreach my $entry (@$list) { | |
912 | my $data = {}; | |
913 | foreach my $k (sort keys %$entry) { | |
914 | my $v = $entry->{$k}; | |
0365eb68 | 915 | next if !defined($v); |
5d38d64f | 916 | $data->{$k} = $v; |
6d9246e7 DM |
917 | # Note: digest ignores refs ($rule->{errors}) |
918 | $sha->add($k, ':', $v, "\n") if !ref($v); ; | |
5d38d64f DM |
919 | } |
920 | push @$res, $data; | |
921 | } | |
922 | ||
55e686c7 | 923 | my $digest = $sha->hexdigest; |
5d38d64f DM |
924 | |
925 | foreach my $entry (@$res) { | |
926 | $entry->{digest} = $digest; | |
927 | } | |
928 | ||
929 | return wantarray ? ($res, $digest) : $res; | |
930 | } | |
931 | ||
9c7e0858 DM |
932 | my $rule_properties = { |
933 | pos => { | |
934 | description => "Update rule at position <pos>.", | |
935 | type => 'integer', | |
936 | minimum => 0, | |
937 | optional => 1, | |
938 | }, | |
c71e785f | 939 | digest => get_standard_option('pve-config-digest'), |
9c7e0858 DM |
940 | type => { |
941 | type => 'string', | |
942 | optional => 1, | |
943 | enum => ['in', 'out', 'group'], | |
944 | }, | |
945 | action => { | |
c14dacdf | 946 | description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.", |
9c7e0858 DM |
947 | type => 'string', |
948 | optional => 1, | |
44be8ceb | 949 | pattern => $security_group_name_pattern, |
c14dacdf DM |
950 | maxLength => 20, |
951 | minLength => 2, | |
9c7e0858 | 952 | }, |
e5076eee DM |
953 | macro => { |
954 | type => 'string', | |
955 | optional => 1, | |
54cd19a8 | 956 | maxLength => 128, |
e5076eee | 957 | }, |
54cd19a8 | 958 | iface => get_standard_option('pve-iface', { optional => 1 }), |
9c7e0858 | 959 | source => { |
d31689ee | 960 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 DM |
961 | optional => 1, |
962 | }, | |
963 | dest => { | |
d31689ee | 964 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 DM |
965 | optional => 1, |
966 | }, | |
967 | proto => { | |
54cd19a8 | 968 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
969 | optional => 1, |
970 | }, | |
971 | enable => { | |
972 | type => 'boolean', | |
973 | optional => 1, | |
974 | }, | |
975 | sport => { | |
54cd19a8 | 976 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
977 | optional => 1, |
978 | }, | |
979 | dport => { | |
54cd19a8 | 980 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
981 | optional => 1, |
982 | }, | |
983 | comment => { | |
984 | type => 'string', | |
985 | optional => 1, | |
986 | }, | |
987 | }; | |
988 | ||
989 | sub add_rule_properties { | |
990 | my ($properties) = @_; | |
991 | ||
992 | foreach my $k (keys %$rule_properties) { | |
3655b01f DM |
993 | my $h = $rule_properties->{$k}; |
994 | # copy data, so that we can modify later without side effects | |
995 | foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; } | |
9c7e0858 | 996 | } |
cbb5d6f3 | 997 | |
9c7e0858 DM |
998 | return $properties; |
999 | } | |
1000 | ||
5b7974df DM |
1001 | sub delete_rule_properties { |
1002 | my ($rule, $delete_str) = @_; | |
e34d0e58 | 1003 | |
5b7974df DM |
1004 | foreach my $opt (PVE::Tools::split_list($delete_str)) { |
1005 | raise_param_exc({ 'delete' => "no such property ('$opt')"}) | |
1006 | if !defined($rule_properties->{$opt}); | |
1007 | raise_param_exc({ 'delete' => "unable to delete required property '$opt'"}) | |
1008 | if $opt eq 'type' || $opt eq 'action'; | |
1009 | delete $rule->{$opt}; | |
1010 | } | |
1011 | ||
1012 | return $rule; | |
1013 | } | |
1014 | ||
9a2745a0 DM |
1015 | my $apply_macro = sub { |
1016 | my ($macro_name, $param, $verify) = @_; | |
1017 | ||
1018 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
1019 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
1020 | ||
1021 | my $rules = []; | |
1022 | ||
1023 | foreach my $templ (@$macro_rules) { | |
1024 | my $rule = {}; | |
1025 | my $param_used = {}; | |
1026 | foreach my $k (keys %$templ) { | |
1027 | my $v = $templ->{$k}; | |
1028 | if ($v eq 'PARAM') { | |
1029 | $v = $param->{$k}; | |
1030 | $param_used->{$k} = 1; | |
1031 | } elsif ($v eq 'DEST') { | |
1032 | $v = $param->{dest}; | |
1033 | $param_used->{dest} = 1; | |
1034 | } elsif ($v eq 'SOURCE') { | |
1035 | $v = $param->{source}; | |
1036 | $param_used->{source} = 1; | |
1037 | } | |
1038 | ||
1039 | if (!defined($v)) { | |
1040 | my $msg = "missing parameter '$k' in macro '$macro_name'"; | |
e34d0e58 | 1041 | raise_param_exc({ macro => $msg }) if $verify; |
9a2745a0 DM |
1042 | die "$msg\n"; |
1043 | } | |
1044 | $rule->{$k} = $v; | |
1045 | } | |
1046 | foreach my $k (keys %$param) { | |
1047 | next if $k eq 'macro'; | |
1048 | next if !defined($param->{$k}); | |
1049 | next if $param_used->{$k}; | |
1050 | if (defined($rule->{$k})) { | |
1051 | if ($rule->{$k} ne $param->{$k}) { | |
1052 | my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')"; | |
e34d0e58 | 1053 | raise_param_exc({ $k => $msg }) if $verify; |
9a2745a0 DM |
1054 | die "$msg\n"; |
1055 | } | |
1056 | } else { | |
1057 | $rule->{$k} = $param->{$k}; | |
1058 | } | |
1059 | } | |
1060 | push @$rules, $rule; | |
1061 | } | |
1062 | ||
1063 | return $rules; | |
1064 | }; | |
1065 | ||
b6b8e6ad DM |
1066 | my $rule_env_iface_lookup = { |
1067 | 'ct' => 1, | |
1068 | 'vm' => 1, | |
1069 | 'group' => 0, | |
1070 | 'cluster' => 1, | |
1071 | 'host' => 1, | |
1072 | }; | |
1073 | ||
7ca36671 | 1074 | sub verify_rule { |
a523e057 | 1075 | my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_; |
b6b8e6ad DM |
1076 | |
1077 | my $allow_groups = $rule_env eq 'group' ? 0 : 1; | |
7697c041 | 1078 | my $ipversion = undef; |
bfc488f6 | 1079 | |
b6b8e6ad DM |
1080 | my $allow_iface = $rule_env_iface_lookup->{$rule_env}; |
1081 | die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen | |
7ca36671 | 1082 | |
a523e057 DM |
1083 | my $errors = $rule->{errors} || {}; |
1084 | ||
6d9246e7 | 1085 | my $error_count = 0; |
7ca36671 | 1086 | |
6d9246e7 DM |
1087 | my $add_error = sub { |
1088 | my ($param, $msg) = @_; | |
d4cda423 | 1089 | chomp $msg; |
6d9246e7 DM |
1090 | raise_param_exc({ $param => $msg }) if !$noerr; |
1091 | $error_count++; | |
1092 | $errors->{$param} = $msg if !$errors->{$param}; | |
1093 | }; | |
1094 | ||
a523e057 DM |
1095 | my $check_ipset_or_alias_property = sub { |
1096 | my ($name) = @_; | |
1097 | ||
1098 | if (my $value = $rule->{$name}) { | |
1099 | if ($value =~ m/^\+/) { | |
4dfe04e6 | 1100 | if ($value =~ m/^\+(${ipset_name_pattern})$/) { |
bfc488f6 | 1101 | &$add_error($name, "no such ipset '$1'") |
a523e057 | 1102 | if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1})); |
bfc488f6 | 1103 | |
a523e057 | 1104 | } else { |
351052d1 | 1105 | &$add_error($name, "invalid ipset name '$value'"); |
a523e057 DM |
1106 | } |
1107 | } elsif ($value =~ m/^${ip_alias_pattern}$/){ | |
1108 | my $alias = lc($value); | |
bfc488f6 | 1109 | &$add_error($name, "no such alias '$value'") |
a523e057 DM |
1110 | if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias})) |
1111 | } | |
1112 | } | |
1113 | }; | |
1114 | ||
6d9246e7 DM |
1115 | my $type = $rule->{type}; |
1116 | my $action = $rule->{action}; | |
bfc488f6 | 1117 | |
6d9246e7 DM |
1118 | &$add_error('type', "missing property") if !$type; |
1119 | &$add_error('action', "missing property") if !$action; | |
1120 | ||
1121 | if ($type) { | |
1122 | if ($type eq 'in' || $type eq 'out') { | |
1123 | &$add_error('action', "unknown action '$action'") | |
1124 | if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/); | |
1125 | } elsif ($type eq 'group') { | |
1126 | &$add_error('type', "security groups not allowed") | |
1127 | if !$allow_groups; | |
1128 | &$add_error('action', "invalid characters in security group name") | |
1129 | if $action && ($action !~ m/^${security_group_name_pattern}$/); | |
1130 | } else { | |
1131 | &$add_error('type', "unknown rule type '$type'"); | |
1132 | } | |
7ca36671 | 1133 | } |
e34d0e58 | 1134 | |
dba740a9 | 1135 | if ($rule->{iface}) { |
bfc488f6 | 1136 | &$add_error('type', "parameter -i not allowed for this rule type") |
b6b8e6ad | 1137 | if !$allow_iface; |
dba740a9 | 1138 | eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); }; |
6d9246e7 | 1139 | &$add_error('iface', $@) if $@; |
b6b8e6ad DM |
1140 | if ($rule_env eq 'vm') { |
1141 | &$add_error('iface', "value does not match the regex pattern 'net\\d+'") | |
1142 | if $rule->{iface} !~ m/^net(\d+)$/; | |
1143 | } elsif ($rule_env eq 'ct') { | |
1144 | &$add_error('iface', "value does not match the regex pattern '(venet|eth\\d+)'") | |
1145 | if $rule->{iface} !~ m/^(venet|eth(\d+))$/; | |
1146 | } | |
1147 | } | |
7ca36671 DM |
1148 | |
1149 | if ($rule->{macro}) { | |
6d9246e7 DM |
1150 | if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) { |
1151 | $rule->{macro} = $preferred_name; | |
1152 | } else { | |
1153 | &$add_error('macro', "unknown macro '$rule->{macro}'"); | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | if ($rule->{proto}) { | |
1158 | eval { pve_fw_verify_protocol_spec($rule->{proto}); }; | |
1159 | &$add_error('proto', $@) if $@; | |
1160 | } | |
7ca36671 DM |
1161 | |
1162 | if ($rule->{dport}) { | |
1163 | eval { parse_port_name_number_or_range($rule->{dport}); }; | |
6d9246e7 DM |
1164 | &$add_error('dport', $@) if $@; |
1165 | &$add_error('proto', "missing property - 'dport' requires this property") | |
914f9a50 | 1166 | if !$rule->{proto}; |
6d9246e7 | 1167 | } |
7ca36671 DM |
1168 | |
1169 | if ($rule->{sport}) { | |
1170 | eval { parse_port_name_number_or_range($rule->{sport}); }; | |
6d9246e7 DM |
1171 | &$add_error('sport', $@) if $@; |
1172 | &$add_error('proto', "missing property - 'sport' requires this property") | |
914f9a50 | 1173 | if !$rule->{proto}; |
7ca36671 DM |
1174 | } |
1175 | ||
1176 | if ($rule->{source}) { | |
7697c041 | 1177 | eval { $ipversion = parse_address_list($rule->{source}); }; |
6d9246e7 | 1178 | &$add_error('source', $@) if $@; |
a523e057 | 1179 | &$check_ipset_or_alias_property('source'); |
7ca36671 DM |
1180 | } |
1181 | ||
1182 | if ($rule->{dest}) { | |
7697c041 | 1183 | eval { $ipversion = parse_address_list($rule->{dest}); }; |
6d9246e7 | 1184 | &$add_error('dest', $@) if $@; |
a523e057 | 1185 | &$check_ipset_or_alias_property('dest'); |
7ca36671 DM |
1186 | } |
1187 | ||
a523e057 | 1188 | if ($rule->{macro} && !$error_count) { |
6d9246e7 DM |
1189 | eval { &$apply_macro($rule->{macro}, $rule, 1); }; |
1190 | if (my $err = $@) { | |
1191 | if (ref($err) eq "PVE::Exception" && $err->{errors}) { | |
1192 | my $eh = $err->{errors}; | |
1193 | foreach my $p (keys %$eh) { | |
1194 | &$add_error($p, $eh->{$p}); | |
1195 | } | |
1196 | } else { | |
1197 | &$add_error('macro', "$err"); | |
1198 | } | |
1199 | } | |
9a2745a0 DM |
1200 | } |
1201 | ||
6d9246e7 | 1202 | $rule->{errors} = $errors if $error_count; |
7697c041 | 1203 | $rule->{ipversion} = $ipversion if $ipversion; |
6d9246e7 | 1204 | |
7ca36671 DM |
1205 | return $rule; |
1206 | } | |
1207 | ||
9c7e0858 DM |
1208 | sub copy_rule_data { |
1209 | my ($rule, $param) = @_; | |
1210 | ||
1211 | foreach my $k (keys %$rule_properties) { | |
1212 | if (defined(my $v = $param->{$k})) { | |
1213 | if ($v eq '' || $v eq '-') { | |
1214 | delete $rule->{$k}; | |
1215 | } else { | |
1216 | $rule->{$k} = $v; | |
1217 | } | |
9c7e0858 DM |
1218 | } |
1219 | } | |
7ca36671 | 1220 | |
9c7e0858 DM |
1221 | return $rule; |
1222 | } | |
1223 | ||
9f6845cf DM |
1224 | sub rules_modify_permissions { |
1225 | my ($rule_env) = @_; | |
1226 | ||
1227 | if ($rule_env eq 'host') { | |
1228 | return { | |
1229 | check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]], | |
1230 | }; | |
1231 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1232 | return { | |
1233 | check => ['perm', '/', [ 'Sys.Modify' ]], | |
1234 | }; | |
1235 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { | |
1236 | return { | |
1237 | check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]], | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | return undef; | |
1242 | } | |
1243 | ||
1244 | sub rules_audit_permissions { | |
1245 | my ($rule_env) = @_; | |
1246 | ||
1247 | if ($rule_env eq 'host') { | |
1248 | return { | |
1249 | check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]], | |
1250 | }; | |
1251 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1252 | return { | |
1253 | check => ['perm', '/', [ 'Sys.Audit' ]], | |
1254 | }; | |
1255 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { | |
1256 | return { | |
1257 | check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]], | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | return undef; | |
1262 | } | |
1263 | ||
9c7e0858 | 1264 | # core functions |
780bcc0f DM |
1265 | my $bridge_firewall_enabled = 0; |
1266 | ||
1267 | sub enable_bridge_firewall { | |
1268 | ||
1269 | return if $bridge_firewall_enabled; # only once | |
1270 | ||
5f0a912c DM |
1271 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
1272 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 1273 | |
6a8a75db DM |
1274 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
1275 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
1276 | ||
780bcc0f DM |
1277 | $bridge_firewall_enabled = 1; |
1278 | } | |
1279 | ||
8cebfa6f | 1280 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 1281 | |
b16e818e DM |
1282 | sub iptables_restore_cmdlist { |
1283 | my ($cmdlist) = @_; | |
3a616aa0 | 1284 | |
3fa83edf | 1285 | run_command("/sbin/iptables-restore -n", input => $cmdlist); |
3a616aa0 AD |
1286 | } |
1287 | ||
34cdedfa AD |
1288 | sub ipset_restore_cmdlist { |
1289 | my ($cmdlist) = @_; | |
1290 | ||
dd7a13fd | 1291 | run_command("/usr/sbin/ipset restore", input => $cmdlist); |
34cdedfa AD |
1292 | } |
1293 | ||
de2a57cd DM |
1294 | sub iptables_get_chains { |
1295 | ||
1296 | my $res = {}; | |
1297 | ||
1298 | # check what chains we want to track | |
1299 | my $is_pvefw_chain = sub { | |
1300 | my $name = shift; | |
1301 | ||
dec84fcd DM |
1302 | return 1 if $name =~ m/^PVEFW-\S+$/; |
1303 | ||
de2a57cd | 1304 | return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/; |
954f24b1 DM |
1305 | |
1306 | return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable | |
1307 | ||
9e15114a DM |
1308 | return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/; |
1309 | ||
a01c32c7 | 1310 | return 1 if $name =~ m/^fwbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/; |
f50656c2 | 1311 | return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/; |
de2a57cd DM |
1312 | |
1313 | return undef; | |
1314 | }; | |
1315 | ||
1316 | my $table = ''; | |
1317 | ||
c4a2e5ae DM |
1318 | my $hooks = {}; |
1319 | ||
de2a57cd DM |
1320 | my $parser = sub { |
1321 | my $line = shift; | |
1322 | ||
1323 | return if $line =~ m/^#/; | |
1324 | return if $line =~ m/^\s*$/; | |
1325 | ||
1326 | if ($line =~ m/^\*(\S+)$/) { | |
1327 | $table = $1; | |
1328 | return; | |
1329 | } | |
1330 | ||
1331 | return if $table ne 'filter'; | |
1332 | ||
1333 | if ($line =~ m/^:(\S+)\s/) { | |
1334 | my $chain = $1; | |
1335 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 1336 | $res->{$chain} = "unknown"; |
09d5f68e | 1337 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 1338 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 1339 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 1340 | $res->{$chain} = $sig; |
c4a2e5ae DM |
1341 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
1342 | $hooks->{$1} = 1; | |
de2a57cd DM |
1343 | } else { |
1344 | # simply ignore the rest | |
1345 | return; | |
1346 | } | |
1347 | }; | |
1348 | ||
1349 | run_command("/sbin/iptables-save", outfunc => $parser); | |
1350 | ||
c4a2e5ae | 1351 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
1352 | } |
1353 | ||
9bf7d929 DM |
1354 | sub iptables_chain_digest { |
1355 | my ($rules) = @_; | |
1356 | my $digest = Digest::SHA->new('sha1'); | |
1357 | foreach my $rule (@$rules) { # order is important | |
1358 | $digest->add($rule); | |
1359 | } | |
1360 | return $digest->b64digest; | |
1361 | } | |
1362 | ||
3f95d14a DM |
1363 | sub ipset_chain_digest { |
1364 | my ($rules) = @_; | |
4bd0a9c4 | 1365 | |
3f95d14a DM |
1366 | my $digest = Digest::SHA->new('sha1'); |
1367 | foreach my $rule (sort @$rules) { # note: sorted | |
1368 | $digest->add($rule); | |
1369 | } | |
1370 | return $digest->b64digest; | |
1371 | } | |
1372 | ||
34cdedfa AD |
1373 | sub ipset_get_chains { |
1374 | ||
1375 | my $res = {}; | |
1376 | my $chains = {}; | |
1377 | ||
1378 | my $parser = sub { | |
1379 | my $line = shift; | |
1380 | ||
1381 | return if $line =~ m/^#/; | |
1382 | return if $line =~ m/^\s*$/; | |
4b96e877 | 1383 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 DM |
1384 | my $chain = $1; |
1385 | $line =~ s/\s+$//; # delete trailing white space | |
1386 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
1387 | } else { |
1388 | # simply ignore the rest | |
1389 | return; | |
1390 | } | |
1391 | }; | |
1392 | ||
3f95d14a | 1393 | run_command("/usr/sbin/ipset save", outfunc => $parser); |
34cdedfa | 1394 | |
3f95d14a DM |
1395 | # compute digest for each chain |
1396 | foreach my $chain (keys %$chains) { | |
1397 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
1398 | } |
1399 | ||
1400 | return $res; | |
1401 | } | |
1402 | ||
eba0fb64 | 1403 | sub ruleset_generate_cmdstr { |
e523d2bb | 1404 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_; |
3a616aa0 | 1405 | |
00bb4391 | 1406 | return if defined($rule->{enable}) && !$rule->{enable}; |
6d9246e7 | 1407 | return if $rule->{errors}; |
11bac5c2 | 1408 | |
e5076eee DM |
1409 | die "unable to emit macro - internal error" if $rule->{macro}; # should not happen |
1410 | ||
1411 | my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0; | |
1412 | my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0; | |
e5076eee | 1413 | |
41524a58 | 1414 | my @cmd = (); |
3a616aa0 | 1415 | |
eba0fb64 DM |
1416 | push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in}; |
1417 | push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
1418 | ||
ba791b1f AD |
1419 | my $source = $rule->{source}; |
1420 | my $dest = $rule->{dest}; | |
1421 | ||
cbb5d6f3 | 1422 | if ($source) { |
44be8ceb | 1423 | if ($source =~ m/^\+/) { |
4dfe04e6 | 1424 | if ($source =~ m/^\+(${ipset_name_pattern})$/) { |
e523d2bb DM |
1425 | my $name = $1; |
1426 | if ($fw_conf && $fw_conf->{ipset}->{$name}) { | |
708ba714 DM |
1427 | my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name); |
1428 | push @cmd, "-m set --match-set ${ipset_chain} src"; | |
e523d2bb | 1429 | } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) { |
708ba714 DM |
1430 | my $ipset_chain = compute_ipset_chain_name(0, $name); |
1431 | push @cmd, "-m set --match-set ${ipset_chain} src"; | |
e523d2bb DM |
1432 | } else { |
1433 | die "no such ipset '$name'\n"; | |
1434 | } | |
44be8ceb DM |
1435 | } else { |
1436 | die "invalid security group name '$source'\n"; | |
1437 | } | |
1438 | } elsif ($source =~ m/^${ip_alias_pattern}$/){ | |
81d574a7 | 1439 | my $alias = lc($source); |
bfc488f6 | 1440 | my $e = $fw_conf->{aliases}->{$alias} if $fw_conf; |
e523d2bb DM |
1441 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; |
1442 | die "no such alias '$source'\n" if !$e; | |
81d574a7 | 1443 | push @cmd, "-s $e->{cidr}"; |
ac8242cc | 1444 | } elsif ($source =~ m/\-/){ |
ba791b1f | 1445 | push @cmd, "-m iprange --src-range $source"; |
cbb5d6f3 | 1446 | } else { |
ba791b1f AD |
1447 | push @cmd, "-s $source"; |
1448 | } | |
1449 | } | |
1450 | ||
cbb5d6f3 | 1451 | if ($dest) { |
44be8ceb | 1452 | if ($dest =~ m/^\+/) { |
4dfe04e6 | 1453 | if ($dest =~ m/^\+(${ipset_name_pattern})$/) { |
e523d2bb DM |
1454 | my $name = $1; |
1455 | if ($fw_conf && $fw_conf->{ipset}->{$name}) { | |
708ba714 | 1456 | my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name); |
ac4580a0 | 1457 | push @cmd, "-m set --match-set ${ipset_chain} dst"; |
e523d2bb | 1458 | } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) { |
708ba714 DM |
1459 | my $ipset_chain = compute_ipset_chain_name(0, $name); |
1460 | push @cmd, "-m set --match-set ${ipset_chain} dst"; | |
e523d2bb DM |
1461 | } else { |
1462 | die "no such ipset '$name'\n"; | |
1463 | } | |
44be8ceb DM |
1464 | } else { |
1465 | die "invalid security group name '$dest'\n"; | |
1466 | } | |
1467 | } elsif ($dest =~ m/^${ip_alias_pattern}$/){ | |
51b40846 | 1468 | my $alias = lc($dest); |
bfc488f6 | 1469 | my $e = $fw_conf->{aliases}->{$alias} if $fw_conf; |
e523d2bb DM |
1470 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; |
1471 | die "no such alias '$dest'\n" if !$e; | |
81d574a7 | 1472 | push @cmd, "-d $e->{cidr}"; |
cbb5d6f3 | 1473 | } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){ |
ba791b1f | 1474 | push @cmd, "-m iprange --dst-range $dest"; |
cbb5d6f3 | 1475 | } else { |
d6d2a385 | 1476 | push @cmd, "-d $dest"; |
ba791b1f AD |
1477 | } |
1478 | } | |
4b586518 | 1479 | |
181390b0 | 1480 | if ($rule->{proto}) { |
41524a58 | 1481 | push @cmd, "-p $rule->{proto}"; |
e3a1d391 | 1482 | |
181390b0 | 1483 | my $multiport = 0; |
e5076eee DM |
1484 | $multiport++ if $nbdport > 1; |
1485 | $multiport++ if $nbsport > 1; | |
e3a1d391 | 1486 | |
41524a58 | 1487 | push @cmd, "--match multiport" if $multiport; |
4b586518 | 1488 | |
cbb5d6f3 | 1489 | die "multiport: option '--sports' cannot be used together with '--dports'\n" |
181390b0 DM |
1490 | if ($multiport == 2) && ($rule->{dport} ne $rule->{sport}); |
1491 | ||
1492 | if ($rule->{dport}) { | |
1493 | if ($rule->{proto} && $rule->{proto} eq 'icmp') { | |
1494 | # Note: we use dport to store --icmp-type | |
1495 | die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}}); | |
41524a58 | 1496 | push @cmd, "-m icmp --icmp-type $rule->{dport}"; |
181390b0 | 1497 | } else { |
e5076eee | 1498 | if ($nbdport > 1) { |
181390b0 | 1499 | if ($multiport == 2) { |
41524a58 | 1500 | push @cmd, "--ports $rule->{dport}"; |
181390b0 | 1501 | } else { |
41524a58 | 1502 | push @cmd, "--dports $rule->{dport}"; |
181390b0 | 1503 | } |
e3a1d391 | 1504 | } else { |
41524a58 | 1505 | push @cmd, "--dport $rule->{dport}"; |
e3a1d391 | 1506 | } |
4b586518 DM |
1507 | } |
1508 | } | |
4b586518 | 1509 | |
181390b0 | 1510 | if ($rule->{sport}) { |
e5076eee | 1511 | if ($nbsport > 1) { |
41524a58 | 1512 | push @cmd, "--sports $rule->{sport}" if $multiport != 2; |
181390b0 | 1513 | } else { |
41524a58 | 1514 | push @cmd, "--sport $rule->{sport}"; |
181390b0 | 1515 | } |
4b586518 | 1516 | } |
181390b0 | 1517 | } elsif ($rule->{dport} || $rule->{sport}) { |
93d96f83 DM |
1518 | die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport}; |
1519 | die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport}; | |
4b586518 DM |
1520 | } |
1521 | ||
41524a58 | 1522 | push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; |
4e6112f9 DM |
1523 | |
1524 | if (my $action = $rule->{action}) { | |
cbb5d6f3 | 1525 | $action = $actions->{$action} if defined($actions->{$action}); |
4e6112f9 | 1526 | $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK'; |
41524a58 | 1527 | push @cmd, $goto ? "-g $action" : "-j $action"; |
181390b0 | 1528 | } |
3a616aa0 | 1529 | |
eba0fb64 DM |
1530 | return scalar(@cmd) ? join(' ', @cmd) : undef; |
1531 | } | |
1532 | ||
1533 | sub ruleset_generate_rule { | |
e523d2bb | 1534 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_; |
eba0fb64 | 1535 | |
e5076eee DM |
1536 | my $rules; |
1537 | ||
1538 | if ($rule->{macro}) { | |
1539 | $rules = &$apply_macro($rule->{macro}, $rule); | |
1540 | } else { | |
1541 | $rules = [ $rule ]; | |
1542 | } | |
1543 | ||
d4091b82 DM |
1544 | # update all or nothing |
1545 | ||
1546 | my @cmds = (); | |
cbb5d6f3 | 1547 | foreach my $tmp (@$rules) { |
e523d2bb | 1548 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) { |
d4091b82 | 1549 | push @cmds, $cmdstr; |
e5076eee | 1550 | } |
41524a58 | 1551 | } |
d4091b82 DM |
1552 | |
1553 | foreach my $cmdstr (@cmds) { | |
1554 | ruleset_addrule($ruleset, $chain, $cmdstr); | |
1555 | } | |
3fa83edf | 1556 | } |
0f168d7b | 1557 | |
eba0fb64 DM |
1558 | sub ruleset_generate_rule_insert { |
1559 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; | |
1560 | ||
e5076eee DM |
1561 | die "implement me" if $rule->{macro}; # not implemented, because not needed so far |
1562 | ||
eba0fb64 DM |
1563 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) { |
1564 | ruleset_insertrule($ruleset, $chain, $cmdstr); | |
1565 | } | |
1566 | } | |
3fa83edf DM |
1567 | |
1568 | sub ruleset_create_chain { | |
1569 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1570 | |
d050c724 | 1571 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 1572 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 1573 | |
3fa83edf DM |
1574 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
1575 | ||
1576 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
1577 | } |
1578 | ||
3fa83edf DM |
1579 | sub ruleset_chain_exist { |
1580 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1581 | |
3fa83edf DM |
1582 | return $ruleset->{$chain} ? 1 : undef; |
1583 | } | |
3a616aa0 | 1584 | |
3fa83edf DM |
1585 | sub ruleset_addrule { |
1586 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1587 | |
3fa83edf | 1588 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1589 | |
3fa83edf DM |
1590 | push @{$ruleset->{$chain}}, "-A $chain $rule"; |
1591 | } | |
3a616aa0 | 1592 | |
3fa83edf DM |
1593 | sub ruleset_insertrule { |
1594 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1595 | |
3fa83edf | 1596 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1597 | |
3fa83edf DM |
1598 | unshift @{$ruleset->{$chain}}, "-A $chain $rule"; |
1599 | } | |
3a616aa0 | 1600 | |
782c4cde DM |
1601 | sub get_log_rule_base { |
1602 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 1603 | |
782c4cde DM |
1604 | die "internal error - no log level" if !defined($loglevel); |
1605 | ||
1606 | $vmid = 0 if !defined($vmid); | |
1607 | ||
cbb5d6f3 | 1608 | # Note: we use special format for prefix to pass further |
782c4cde DM |
1609 | # info to log daemon (VMID, LOGVELEL and CHAIN) |
1610 | ||
1611 | return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; | |
1612 | } | |
1613 | ||
1614 | sub ruleset_addlog { | |
1615 | my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_; | |
1616 | ||
1617 | return if !defined($loglevel); | |
1618 | ||
1619 | my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel); | |
1620 | ||
1621 | $logrule = "$rule $logrule" if defined($rule); | |
1622 | ||
88733a74 | 1623 | ruleset_addrule($ruleset, $chain, $logrule); |
782c4cde DM |
1624 | } |
1625 | ||
ead850e8 | 1626 | sub ruleset_add_chain_policy { |
782c4cde | 1627 | my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
1628 | |
1629 | if ($policy eq 'ACCEPT') { | |
1630 | ||
1631 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' }, | |
1632 | { ACCEPT => $accept_action}); | |
1633 | ||
1634 | } elsif ($policy eq 'DROP') { | |
1635 | ||
1636 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop"); | |
1637 | ||
782c4cde | 1638 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1639 | |
1640 | ruleset_addrule($ruleset, $chain, "-j DROP"); | |
1641 | } elsif ($policy eq 'REJECT') { | |
1642 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject"); | |
1643 | ||
782c4cde | 1644 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1645 | |
1646 | ruleset_addrule($ruleset, $chain, "-g PVEFW-reject"); | |
1647 | } else { | |
1648 | # should not happen | |
1649 | die "internal error: unknown policy '$policy'"; | |
1650 | } | |
1651 | } | |
1652 | ||
e2943485 DM |
1653 | sub ruleset_chain_add_conn_filters { |
1654 | my ($ruleset, $chain, $accept) = @_; | |
1655 | ||
1656 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); | |
1657 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); | |
1658 | } | |
1659 | ||
1660 | sub ruleset_chain_add_input_filters { | |
2428e394 AD |
1661 | my ($ruleset, $chain, $options, $cluster_conf, $loglevel) = @_; |
1662 | ||
1663 | if ($cluster_conf->{ipset}->{blacklist}){ | |
b5831a0d AD |
1664 | if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) { |
1665 | ruleset_create_chain($ruleset, "PVEFW-blacklist"); | |
1666 | ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel; | |
1667 | ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP"); | |
1668 | } | |
708ba714 DM |
1669 | my $ipset_chain = compute_ipset_chain_name(0, 'blacklist'); |
1670 | ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src -j PVEFW-blacklist"); | |
2428e394 | 1671 | } |
e2943485 DM |
1672 | |
1673 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { | |
1674 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); | |
1675 | } | |
1676 | ||
1677 | if ($options->{tcpflags}) { | |
1678 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); | |
1679 | } | |
1680 | } | |
1681 | ||
9e15114a | 1682 | sub ruleset_create_vm_chain { |
808d711d | 1683 | my ($ruleset, $chain, $options, $macaddr, $ipfilter_ipset, $direction) = @_; |
3a616aa0 | 1684 | |
9e15114a | 1685 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1686 | my $accept = generate_nfqueue($options); |
3a616aa0 | 1687 | |
ce15d90b | 1688 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
76a2d1e7 | 1689 | if ($direction eq 'OUT') { |
cbb5d6f3 | 1690 | ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK', |
0f168d7b | 1691 | proto => 'udp', sport => 68, dport => 67 }); |
76a2d1e7 | 1692 | } else { |
cbb5d6f3 | 1693 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT', |
0f168d7b | 1694 | proto => 'udp', sport => 67, dport => 68 }); |
76a2d1e7 | 1695 | } |
ce15d90b DM |
1696 | } |
1697 | ||
b21aca2c DM |
1698 | if ($direction eq 'OUT') { |
1699 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
9e15114a | 1700 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP"); |
b21aca2c | 1701 | } |
808d711d DM |
1702 | if ($ipfilter_ipset) { |
1703 | ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src -j DROP"); | |
1704 | } | |
9e15114a | 1705 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
c29f55c9 | 1706 | } |
9e15114a DM |
1707 | } |
1708 | ||
4bc6b5ac DM |
1709 | sub ruleset_add_group_rule { |
1710 | my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action) = @_; | |
1711 | ||
1712 | my $group = $rule->{action}; | |
1713 | my $group_chain = "GROUP-$group-$direction"; | |
1714 | if(!ruleset_chain_exist($ruleset, $group_chain)){ | |
1715 | generate_group_rules($ruleset, $cluster_conf, $group); | |
1716 | } | |
bfc488f6 | 1717 | |
f8b12fff DM |
1718 | if ($direction eq 'OUT' && $rule->{iface_out}) { |
1719 | ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out} -j $group_chain"); | |
1720 | } elsif ($direction eq 'IN' && $rule->{iface_in}) { | |
1721 | ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in} -j $group_chain"); | |
4bc6b5ac DM |
1722 | } else { |
1723 | ruleset_addrule($ruleset, $chain, "-j $group_chain"); | |
1724 | } | |
1725 | ||
1726 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $action"); | |
1727 | } | |
1728 | ||
9e15114a | 1729 | sub ruleset_generate_vm_rules { |
e523d2bb | 1730 | my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options) = @_; |
9e15114a DM |
1731 | |
1732 | my $lc_direction = lc($direction); | |
c29f55c9 | 1733 | |
6b8ca015 DM |
1734 | my $in_accept = generate_nfqueue($options); |
1735 | ||
92e976b3 DM |
1736 | foreach my $rule (@$rules) { |
1737 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
b7ab6989 | 1738 | next if !$rule->{enable} || $rule->{errors}; |
92e976b3 | 1739 | if ($rule->{type} eq 'group') { |
4bc6b5ac DM |
1740 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction, |
1741 | $direction eq 'OUT' ? 'RETURN' : $in_accept); | |
92e976b3 DM |
1742 | } else { |
1743 | next if $rule->{type} ne $lc_direction; | |
921dfb33 DM |
1744 | eval { |
1745 | if ($direction eq 'OUT') { | |
1746 | ruleset_generate_rule($ruleset, $chain, $rule, | |
e34d0e58 | 1747 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, |
e523d2bb | 1748 | undef, $cluster_conf, $vmfw_conf); |
921dfb33 | 1749 | } else { |
e34d0e58 DM |
1750 | ruleset_generate_rule($ruleset, $chain, $rule, |
1751 | { ACCEPT => $in_accept , REJECT => "PVEFW-reject" }, | |
e523d2bb | 1752 | undef, $cluster_conf, $vmfw_conf); |
921dfb33 DM |
1753 | } |
1754 | }; | |
1755 | warn $@ if $@; | |
4e6112f9 | 1756 | } |
3a616aa0 | 1757 | } |
9e15114a DM |
1758 | } |
1759 | ||
b47ecc88 AD |
1760 | sub generate_nfqueue { |
1761 | my ($options) = @_; | |
1762 | ||
73089769 DM |
1763 | if ($options->{ips}) { |
1764 | my $action = "NFQUEUE"; | |
1765 | if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
1766 | if (defined($3) && defined($1)) { | |
b47ecc88 | 1767 | $action .= " --queue-balance $1:$3"; |
73089769 | 1768 | } elsif (defined($1)) { |
b47ecc88 AD |
1769 | $action .= " --queue-num $1"; |
1770 | } | |
1771 | } | |
8dc92812 | 1772 | $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10 |
73089769 DM |
1773 | return $action; |
1774 | } else { | |
1775 | return "ACCEPT"; | |
b47ecc88 | 1776 | } |
b47ecc88 AD |
1777 | } |
1778 | ||
da6fc60b | 1779 | sub ruleset_generate_vm_ipsrules { |
a01c32c7 | 1780 | my ($ruleset, $options, $direction, $iface) = @_; |
da6fc60b AD |
1781 | |
1782 | if ($options->{ips} && $direction eq 'IN') { | |
1783 | my $nfqueue = generate_nfqueue($options); | |
1784 | ||
a01c32c7 | 1785 | if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) { |
da6fc60b AD |
1786 | ruleset_create_chain($ruleset, "PVEFW-IPS"); |
1787 | } | |
1788 | ||
a01c32c7 | 1789 | ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue"); |
da6fc60b AD |
1790 | } |
1791 | } | |
1792 | ||
9e15114a | 1793 | sub generate_venet_rules_direction { |
58638f2c | 1794 | my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_; |
9e15114a | 1795 | |
9e15114a DM |
1796 | my $lc_direction = lc($direction); |
1797 | ||
1798 | my $rules = $vmfw_conf->{rules}; | |
1799 | ||
1800 | my $options = $vmfw_conf->{options}; | |
1801 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1802 | ||
1803 | my $chain = "venet0-$vmid-$direction"; | |
1804 | ||
a34cfdd0 | 1805 | ruleset_create_vm_chain($ruleset, $chain, $options, undef, undef, $direction); |
9e15114a | 1806 | |
e523d2bb | 1807 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, 'venet', $direction); |
9e15114a DM |
1808 | |
1809 | # implement policy | |
1810 | my $policy; | |
1811 | ||
1812 | if ($direction eq 'OUT') { | |
1813 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
1814 | } else { | |
1815 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default | |
1816 | } | |
1817 | ||
b47ecc88 AD |
1818 | my $accept = generate_nfqueue($options); |
1819 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1820 | ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action); |
9e15114a | 1821 | |
eba0fb64 | 1822 | if ($direction eq 'OUT') { |
41389aed | 1823 | ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", { |
eba0fb64 DM |
1824 | action => $chain, |
1825 | source => $ip, | |
1826 | iface_in => 'venet0'}); | |
1827 | } else { | |
41389aed | 1828 | ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", { |
eba0fb64 DM |
1829 | action => $chain, |
1830 | dest => $ip, | |
1831 | iface_out => 'venet0'}); | |
1832 | } | |
9e15114a DM |
1833 | } |
1834 | ||
1835 | sub generate_tap_rules_direction { | |
58638f2c | 1836 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction) = @_; |
9e15114a DM |
1837 | |
1838 | my $lc_direction = lc($direction); | |
1839 | ||
1840 | my $rules = $vmfw_conf->{rules}; | |
1841 | ||
1842 | my $options = $vmfw_conf->{options}; | |
1843 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1844 | ||
1845 | my $tapchain = "$iface-$direction"; | |
1846 | ||
b692f42c DM |
1847 | my $ipfilter_name = compute_ipfilter_ipset_name($netid); |
1848 | my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name) | |
1849 | if $vmfw_conf->{ipset}->{$ipfilter_name}; | |
808d711d | 1850 | |
a34cfdd0 | 1851 | # create chain with mac and ip filter |
808d711d | 1852 | ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $ipfilter_ipset, $direction); |
9e15114a | 1853 | |
a34cfdd0 DM |
1854 | if ($options->{enable}) { |
1855 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options); | |
3a616aa0 | 1856 | |
a34cfdd0 | 1857 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface); |
da6fc60b | 1858 | |
a34cfdd0 DM |
1859 | # implement policy |
1860 | my $policy; | |
ccae0b50 | 1861 | |
a34cfdd0 DM |
1862 | if ($direction eq 'OUT') { |
1863 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
1864 | } else { | |
72f63fde | 1865 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
a34cfdd0 | 1866 | } |
ccae0b50 | 1867 | |
a34cfdd0 DM |
1868 | my $accept = generate_nfqueue($options); |
1869 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
1870 | ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action); | |
1871 | } else { | |
1872 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT'; | |
1873 | ruleset_add_chain_policy($ruleset, $tapchain, $vmid, 'ACCEPT', $loglevel, $accept_action); | |
1874 | } | |
3a616aa0 | 1875 | |
3fa83edf | 1876 | # plug the tap chain to bridge chain |
3cc81077 | 1877 | if ($direction eq 'IN') { |
a01c32c7 DM |
1878 | ruleset_addrule($ruleset, "PVEFW-FWBR-IN", |
1879 | "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain"); | |
3cc81077 | 1880 | } else { |
a01c32c7 DM |
1881 | ruleset_addrule($ruleset, "PVEFW-FWBR-OUT", |
1882 | "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain"); | |
3cc81077 | 1883 | } |
3a616aa0 AD |
1884 | } |
1885 | ||
d18c1e2b | 1886 | sub enable_host_firewall { |
fca39c2c | 1887 | my ($ruleset, $hostfw_conf, $cluster_conf) = @_; |
0bd5f137 | 1888 | |
92e976b3 | 1889 | my $options = $hostfw_conf->{options}; |
63324b09 | 1890 | my $cluster_options = $cluster_conf->{options}; |
92e976b3 | 1891 | my $rules = $hostfw_conf->{rules}; |
35f0c37e | 1892 | my $cluster_rules = $cluster_conf->{rules}; |
178a63be | 1893 | |
3fa83edf | 1894 | # host inbound firewall |
dec84fcd DM |
1895 | my $chain = "PVEFW-HOST-IN"; |
1896 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 1897 | |
178a63be DM |
1898 | my $loglevel = get_option_log_level($options, "log_level_in"); |
1899 | ||
e2943485 | 1900 | ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT"); |
4ac863a6 | 1901 | |
e2943485 | 1902 | ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT'); |
2428e394 | 1903 | ruleset_chain_add_input_filters($ruleset, $chain, $options, $cluster_conf, $loglevel); |
fb424a00 | 1904 | |
23e888f8 DM |
1905 | # we use RETURN because we need to check also tap rules |
1906 | my $accept_action = 'RETURN'; | |
1907 | ||
cc8dc02f DM |
1908 | ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast |
1909 | ||
35f0c37e DM |
1910 | # add host rules first, so that cluster wide rules can be overwritten |
1911 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 | 1912 | next if !$rule->{enable} || $rule->{errors}; |
bfc488f6 | 1913 | |
f8b12fff | 1914 | $rule->{iface_in} = $rule->{iface} if $rule->{iface}; |
5383df39 | 1915 | |
1a9978ed DM |
1916 | eval { |
1917 | if ($rule->{type} eq 'group') { | |
1918 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action); | |
1919 | } elsif ($rule->{type} eq 'in') { | |
bfc488f6 | 1920 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, |
e523d2bb | 1921 | undef, $cluster_conf, $hostfw_conf); |
1a9978ed DM |
1922 | } |
1923 | }; | |
1924 | warn $@ if $@; | |
f8b12fff | 1925 | delete $rule->{iface_in}; |
0bd5f137 | 1926 | } |
eb399cef DM |
1927 | |
1928 | # allow standard traffic for management ipset (includes cluster network) | |
708ba714 DM |
1929 | my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management"); |
1930 | my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src"; | |
eb399cef | 1931 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API |
bfc488f6 | 1932 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console |
eb399cef DM |
1933 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy |
1934 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22 -j $accept_action"); # SSH | |
bfc488f6 | 1935 | |
525778d7 | 1936 | my $localnet = local_network(); |
3bc79f87 | 1937 | |
eb399cef | 1938 | # corosync |
525778d7 | 1939 | if ($localnet) { |
c5191f57 | 1940 | my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action"; |
525778d7 DM |
1941 | ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule"); |
1942 | ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule"); | |
3bc79f87 | 1943 | } |
0bd5f137 | 1944 | |
23e888f8 | 1945 | # implement input policy |
63324b09 | 1946 | my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default |
782c4cde | 1947 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 1948 | |
3fa83edf | 1949 | # host outbound firewall |
aadd745e | 1950 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
1951 | ruleset_create_chain($ruleset, $chain); |
1952 | ||
178a63be DM |
1953 | $loglevel = get_option_log_level($options, "log_level_out"); |
1954 | ||
dec84fcd | 1955 | ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT"); |
e2943485 DM |
1956 | |
1957 | ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT'); | |
1958 | ||
23e888f8 DM |
1959 | # we use RETURN because we may want to check other thigs later |
1960 | $accept_action = 'RETURN'; | |
1961 | ||
cc8dc02f DM |
1962 | ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast |
1963 | ||
35f0c37e DM |
1964 | # add host rules first, so that cluster wide rules can be overwritten |
1965 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 DM |
1966 | next if !$rule->{enable} || $rule->{errors}; |
1967 | ||
f8b12fff | 1968 | $rule->{iface_out} = $rule->{iface} if $rule->{iface}; |
1a9978ed DM |
1969 | eval { |
1970 | if ($rule->{type} eq 'group') { | |
1971 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action); | |
1972 | } elsif ($rule->{type} eq 'out') { | |
bfc488f6 | 1973 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, |
e523d2bb | 1974 | undef, $cluster_conf, $hostfw_conf); |
1a9978ed DM |
1975 | } |
1976 | }; | |
1977 | warn $@ if $@; | |
f8b12fff | 1978 | delete $rule->{iface_out}; |
0bd5f137 AD |
1979 | } |
1980 | ||
3bc79f87 | 1981 | # allow standard traffic on cluster network |
525778d7 DM |
1982 | if ($localnet) { |
1983 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006 -j $accept_action"); # PVE API | |
1984 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22 -j $accept_action"); # SSH | |
bfc488f6 | 1985 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console |
525778d7 | 1986 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy |
bfc488f6 | 1987 | |
c5191f57 | 1988 | my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action"; |
525778d7 | 1989 | ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule"); |
f573ae2c | 1990 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule"); |
3bc79f87 DM |
1991 | } |
1992 | ||
23e888f8 | 1993 | # implement output policy |
63324b09 | 1994 | $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default |
782c4cde | 1995 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
6158271d | 1996 | |
dec84fcd DM |
1997 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT"); |
1998 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
1999 | } |
2000 | ||
2001 | sub generate_group_rules { | |
fca39c2c | 2002 | my ($ruleset, $cluster_conf, $group) = @_; |
9d31b418 | 2003 | |
c6f5cc88 | 2004 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 2005 | |
b4deedab DM |
2006 | if (!$rules) { |
2007 | warn "no such security group '$group'\n"; | |
2008 | $rules = []; # create empty chain | |
2009 | } | |
2010 | ||
3fa83edf | 2011 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 2012 | |
3fa83edf | 2013 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 2014 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 2015 | |
92e976b3 DM |
2016 | foreach my $rule (@$rules) { |
2017 | next if $rule->{type} ne 'in'; | |
ba791b1f | 2018 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 AD |
2019 | } |
2020 | ||
3fa83edf | 2021 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 2022 | |
3fa83edf | 2023 | ruleset_create_chain($ruleset, $chain); |
4e6112f9 | 2024 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 2025 | |
92e976b3 DM |
2026 | foreach my $rule (@$rules) { |
2027 | next if $rule->{type} ne 'out'; | |
2028 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to | |
2029 | # check also other tap rules later | |
cbb5d6f3 | 2030 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 2031 | { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 | 2032 | } |
9d31b418 AD |
2033 | } |
2034 | ||
51bae274 DM |
2035 | my $MAX_NETS = 32; |
2036 | my $valid_netdev_names = {}; | |
2037 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
2038 | $valid_netdev_names->{"net$i"} = 1; | |
2039 | } | |
5e1267a5 | 2040 | |
51bae274 | 2041 | sub parse_fw_rule { |
a523e057 | 2042 | my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_; |
5e1267a5 | 2043 | |
d4cda423 DM |
2044 | my $orig_line = $line; |
2045 | ||
6d9246e7 DM |
2046 | my $rule = {}; |
2047 | ||
11bac5c2 | 2048 | # we can add single line comments to the end of the rule |
6d9246e7 DM |
2049 | if ($line =~ s/#\s*(.*?)\s*$//) { |
2050 | $rule->{comment} = decode('utf8', $1); | |
2051 | } | |
11bac5c2 DM |
2052 | |
2053 | # we can disable a rule when prefixed with '|' | |
ea9e5116 | 2054 | |
6d9246e7 | 2055 | $rule->{enable} = $line =~ s/^\|// ? 0 : 1; |
51bae274 | 2056 | |
dba740a9 DM |
2057 | $line =~ s/^(\S+)\s+(\S+)\s*// || |
2058 | die "unable to parse rule: $line\n"; | |
6d9246e7 DM |
2059 | |
2060 | $rule->{type} = lc($1); | |
2061 | $rule->{action} = $2; | |
2062 | ||
2063 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2064 | if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
2065 | $rule->{macro} = $1; | |
2066 | $rule->{action} = $2; | |
92e976b3 | 2067 | } |
51bae274 DM |
2068 | } |
2069 | ||
dba740a9 DM |
2070 | while (length($line)) { |
2071 | if ($line =~ s/^-i (\S+)\s*//) { | |
6d9246e7 | 2072 | $rule->{iface} = $1; |
dba740a9 DM |
2073 | next; |
2074 | } | |
51bae274 | 2075 | |
6d9246e7 | 2076 | last if $rule->{type} eq 'group'; |
51bae274 | 2077 | |
dba740a9 | 2078 | if ($line =~ s/^-p (\S+)\s*//) { |
6d9246e7 | 2079 | $rule->{proto} = $1; |
dba740a9 DM |
2080 | next; |
2081 | } | |
6d9246e7 | 2082 | |
dba740a9 | 2083 | if ($line =~ s/^-dport (\S+)\s*//) { |
6d9246e7 | 2084 | $rule->{dport} = $1; |
dba740a9 DM |
2085 | next; |
2086 | } | |
6d9246e7 | 2087 | |
dba740a9 | 2088 | if ($line =~ s/^-sport (\S+)\s*//) { |
6d9246e7 | 2089 | $rule->{sport} = $1; |
dba740a9 DM |
2090 | next; |
2091 | } | |
2092 | if ($line =~ s/^-source (\S+)\s*//) { | |
6d9246e7 | 2093 | $rule->{source} = $1; |
dba740a9 DM |
2094 | next; |
2095 | } | |
2096 | if ($line =~ s/^-dest (\S+)\s*//) { | |
6d9246e7 | 2097 | $rule->{dest} = $1; |
dba740a9 DM |
2098 | next; |
2099 | } | |
51bae274 | 2100 | |
dba740a9 DM |
2101 | last; |
2102 | } | |
ba791b1f | 2103 | |
dba740a9 | 2104 | die "unable to parse rule parameters: $line\n" if length($line); |
51bae274 | 2105 | |
a523e057 | 2106 | $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1); |
d4cda423 DM |
2107 | if ($verbose && $rule->{errors}) { |
2108 | warn "$prefix - errors in rule parameters: $orig_line\n"; | |
2109 | foreach my $p (keys %{$rule->{errors}}) { | |
2110 | warn " $p: $rule->{errors}->{$p}\n"; | |
2111 | } | |
2112 | } | |
6d9246e7 DM |
2113 | |
2114 | return $rule; | |
51bae274 DM |
2115 | } |
2116 | ||
2d404ffc | 2117 | sub parse_vmfw_option { |
85c6eaed DM |
2118 | my ($line) = @_; |
2119 | ||
2120 | my ($opt, $value); | |
2121 | ||
178a63be DM |
2122 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
2123 | ||
6bafd113 | 2124 | if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
2125 | $opt = lc($1); |
2126 | $value = int($2); | |
178a63be DM |
2127 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
2128 | $opt = lc($1); | |
2129 | $value = $2 ? lc($3) : ''; | |
72f63fde | 2130 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
2131 | $opt = lc($1); |
2132 | $value = uc($3); | |
b47ecc88 AD |
2133 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
2134 | $opt = lc($1); | |
2135 | $value = $2; | |
9c6b6efd | 2136 | } else { |
85c6eaed DM |
2137 | die "can't parse option '$line'\n" |
2138 | } | |
2139 | ||
2140 | return ($opt, $value); | |
2141 | } | |
2142 | ||
2d404ffc DM |
2143 | sub parse_hostfw_option { |
2144 | my ($line) = @_; | |
2145 | ||
2146 | my ($opt, $value); | |
2147 | ||
2148 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
2149 | ||
c50a5a68 | 2150 | if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) { |
2d404ffc DM |
2151 | $opt = lc($1); |
2152 | $value = int($2); | |
178a63be | 2153 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
2154 | $opt = lc($1); |
2155 | $value = $2 ? lc($3) : ''; | |
28c082a1 | 2156 | } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) { |
490cdead DM |
2157 | $opt = lc($1); |
2158 | $value = int($2); | |
2d404ffc | 2159 | } else { |
2d404ffc DM |
2160 | die "can't parse option '$line'\n" |
2161 | } | |
2162 | ||
2163 | return ($opt, $value); | |
2164 | } | |
2165 | ||
c6f5cc88 DM |
2166 | sub parse_clusterfw_option { |
2167 | my ($line) = @_; | |
2168 | ||
2169 | my ($opt, $value); | |
2170 | ||
2171 | if ($line =~ m/^(enable):\s*(0|1)\s*$/i) { | |
2172 | $opt = lc($1); | |
2173 | $value = int($2); | |
63324b09 DM |
2174 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2175 | $opt = lc($1); | |
2176 | $value = uc($3); | |
c6f5cc88 | 2177 | } else { |
c6f5cc88 DM |
2178 | die "can't parse option '$line'\n" |
2179 | } | |
2180 | ||
2181 | return ($opt, $value); | |
2182 | } | |
2183 | ||
6c221576 DM |
2184 | sub resolve_alias { |
2185 | my ($clusterfw_conf, $fw_conf, $cidr) = @_; | |
2186 | ||
2187 | if ($cidr !~ m/^\d/) { | |
2188 | my $alias = lc($cidr); | |
2189 | my $e = $fw_conf->{aliases}->{$alias} if $fw_conf; | |
2190 | $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf; | |
2191 | return $e->{cidr} if $e; | |
2192 | ||
2193 | die "no such alias '$cidr'\n"; | |
2194 | } | |
2195 | ||
2196 | return $cidr; | |
2197 | } | |
2198 | ||
e76a9f53 | 2199 | sub parse_alias { |
92e1209b AD |
2200 | my ($line) = @_; |
2201 | ||
81d574a7 DM |
2202 | # we can add single line comments to the end of the line |
2203 | my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//; | |
2204 | ||
92e1209b | 2205 | if ($line =~ m/^(\S+)\s(\S+)$/) { |
81d574a7 DM |
2206 | my ($name, $cidr) = ($1, $2); |
2207 | $cidr =~ s|/32$||; | |
2208 | pve_verify_ipv4_or_cidr($cidr); | |
2209 | my $data = { | |
2210 | name => $name, | |
2211 | cidr => $cidr, | |
2212 | }; | |
2213 | $data->{comment} = $comment if $comment; | |
2214 | return $data; | |
92e1209b AD |
2215 | } |
2216 | ||
81d574a7 | 2217 | return undef; |
92e1209b AD |
2218 | } |
2219 | ||
e5cd1ee0 | 2220 | sub generic_fw_config_parser { |
1210ae94 | 2221 | my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_; |
5e1267a5 | 2222 | |
51bae274 DM |
2223 | my $section; |
2224 | my $group; | |
2225 | ||
1210ae94 | 2226 | my $res = $empty_conf; |
6158271d | 2227 | |
51bae274 DM |
2228 | while (defined(my $line = <$fh>)) { |
2229 | next if $line =~ m/^#/; | |
2230 | next if $line =~ m/^\s*$/; | |
2231 | ||
c8c534f7 DM |
2232 | chomp $line; |
2233 | ||
961b4928 DM |
2234 | my $linenr = $fh->input_line_number(); |
2235 | my $prefix = "$filename (line $linenr)"; | |
2236 | ||
1210ae94 | 2237 | if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) { |
c6f5cc88 DM |
2238 | $section = 'options'; |
2239 | next; | |
2240 | } | |
2241 | ||
1210ae94 | 2242 | if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) { |
92e1209b AD |
2243 | $section = 'aliases'; |
2244 | next; | |
2245 | } | |
2246 | ||
1210ae94 | 2247 | if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
c6f5cc88 | 2248 | $section = 'groups'; |
92e976b3 | 2249 | $group = lc($1); |
0d22acb3 | 2250 | my $comment = $2; |
351052d1 DM |
2251 | eval { |
2252 | die "security group name too long\n" if length($group) > $max_group_name_length; | |
2253 | die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/; | |
2254 | }; | |
2255 | if (my $err = $@) { | |
2256 | ($section, $group, $comment) = undef; | |
2257 | warn "$prefix: $err"; | |
2258 | next; | |
2259 | } | |
2260 | ||
c85c87f9 | 2261 | $res->{$section}->{$group} = []; |
649e4d57 DM |
2262 | $res->{group_comments}->{$group} = decode('utf8', $comment) |
2263 | if $comment; | |
51bae274 DM |
2264 | next; |
2265 | } | |
34cdedfa | 2266 | |
1210ae94 | 2267 | if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) { |
c6f5cc88 DM |
2268 | $section = 'rules'; |
2269 | next; | |
2270 | } | |
cbb5d6f3 | 2271 | |
1210ae94 | 2272 | if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
34cdedfa AD |
2273 | $section = 'ipset'; |
2274 | $group = lc($1); | |
d72c631c | 2275 | my $comment = $2; |
351052d1 DM |
2276 | eval { |
2277 | die "ipset name too long\n" if length($group) > $max_ipset_name_length; | |
2278 | die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/; | |
2279 | }; | |
2280 | if (my $err = $@) { | |
2281 | ($section, $group, $comment) = undef; | |
2282 | warn "$prefix: $err"; | |
2283 | next; | |
2284 | } | |
2285 | ||
c85c87f9 | 2286 | $res->{$section}->{$group} = []; |
e34d0e58 | 2287 | $res->{ipset_comments}->{$group} = decode('utf8', $comment) |
649e4d57 | 2288 | if $comment; |
34cdedfa AD |
2289 | next; |
2290 | } | |
2291 | ||
c6f5cc88 | 2292 | if (!$section) { |
cbb5d6f3 | 2293 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
2294 | next; |
2295 | } | |
2296 | ||
c6f5cc88 DM |
2297 | if ($section eq 'options') { |
2298 | eval { | |
1210ae94 DM |
2299 | my ($opt, $value); |
2300 | if ($rule_env eq 'cluster') { | |
2301 | ($opt, $value) = parse_clusterfw_option($line); | |
2302 | } elsif ($rule_env eq 'host') { | |
2303 | ($opt, $value) = parse_hostfw_option($line); | |
2304 | } else { | |
2305 | ($opt, $value) = parse_vmfw_option($line); | |
2306 | } | |
c6f5cc88 DM |
2307 | $res->{options}->{$opt} = $value; |
2308 | }; | |
2309 | warn "$prefix: $@" if $@; | |
92e1209b AD |
2310 | } elsif ($section eq 'aliases') { |
2311 | eval { | |
e76a9f53 | 2312 | my $data = parse_alias($line); |
81d574a7 | 2313 | $res->{aliases}->{lc($data->{name})} = $data; |
92e1209b AD |
2314 | }; |
2315 | warn "$prefix: $@" if $@; | |
c6f5cc88 DM |
2316 | } elsif ($section eq 'rules') { |
2317 | my $rule; | |
1210ae94 | 2318 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); }; |
c6f5cc88 DM |
2319 | if (my $err = $@) { |
2320 | warn "$prefix: $err"; | |
2321 | next; | |
2322 | } | |
2323 | push @{$res->{$section}}, $rule; | |
2324 | } elsif ($section eq 'groups') { | |
34cdedfa | 2325 | my $rule; |
1210ae94 | 2326 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); }; |
34cdedfa AD |
2327 | if (my $err = $@) { |
2328 | warn "$prefix: $err"; | |
2329 | next; | |
2330 | } | |
3f95d14a | 2331 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a | 2332 | } elsif ($section eq 'ipset') { |
9d6f90e6 DM |
2333 | # we can add single line comments to the end of the rule |
2334 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; | |
2335 | ||
30f1b100 | 2336 | $line =~ m/^(\!)?\s*(\S+)\s*$/; |
2a052ee3 | 2337 | my $nomatch = $1; |
9d6f90e6 | 2338 | my $cidr = $2; |
d46b1ef6 DM |
2339 | my $errors; |
2340 | ||
2341 | if ($nomatch && !$feature_ipset_nomatch) { | |
2342 | $errors->{nomatch} = "nomatch not supported by kernel"; | |
2343 | } | |
2a052ee3 | 2344 | |
4803b296 DM |
2345 | eval { |
2346 | if ($cidr =~ m/^${ip_alias_pattern}$/) { | |
2347 | resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists | |
2348 | } else { | |
2349 | $cidr =~ s|/32$||; | |
d46b1ef6 | 2350 | pve_verify_ipv4_or_cidr_or_alias($cidr); |
92e1209b | 2351 | } |
4803b296 DM |
2352 | }; |
2353 | if (my $err = $@) { | |
c8c534f7 | 2354 | chomp $err; |
d46b1ef6 | 2355 | $errors->{cidr} = $err; |
2a052ee3 | 2356 | } |
2a052ee3 | 2357 | |
e34d0e58 | 2358 | my $entry = { cidr => $cidr }; |
9d6f90e6 DM |
2359 | $entry->{nomatch} = 1 if $nomatch; |
2360 | $entry->{comment} = $comment if $comment; | |
d46b1ef6 | 2361 | $entry->{errors} = $errors if $errors; |
e34d0e58 | 2362 | |
c8c534f7 | 2363 | if ($verbose && $errors) { |
9a3061c7 | 2364 | warn "$prefix - errors in ipset '$group': $line\n"; |
c8c534f7 DM |
2365 | foreach my $p (keys %{$errors}) { |
2366 | warn " $p: $errors->{$p}\n"; | |
2367 | } | |
2368 | } | |
2369 | ||
9d6f90e6 | 2370 | push @{$res->{$section}->{$group}}, $entry; |
1210ae94 DM |
2371 | } else { |
2372 | warn "$prefix: skip line - unknown section\n"; | |
2373 | next; | |
51bae274 | 2374 | } |
5e1267a5 DM |
2375 | } |
2376 | ||
2377 | return $res; | |
2378 | } | |
2379 | ||
e5cd1ee0 | 2380 | sub parse_hostfw_config { |
1210ae94 DM |
2381 | my ($filename, $fh, $cluster_conf, $verbose) = @_; |
2382 | ||
2383 | my $empty_conf = { rules => [], options => {}}; | |
2384 | ||
e5cd1ee0 | 2385 | return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host'); |
1210ae94 DM |
2386 | } |
2387 | ||
e5cd1ee0 | 2388 | sub parse_vmfw_config { |
1210ae94 DM |
2389 | my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_; |
2390 | ||
2391 | my $empty_conf = { | |
2392 | rules => [], | |
2393 | options => {}, | |
2394 | aliases => {}, | |
2395 | ipset => {} , | |
2396 | ipset_comments => {}, | |
2397 | }; | |
2398 | ||
e5cd1ee0 | 2399 | return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env); |
1210ae94 DM |
2400 | } |
2401 | ||
e5cd1ee0 | 2402 | sub parse_clusterfw_config { |
1210ae94 DM |
2403 | my ($filename, $fh, $verbose) = @_; |
2404 | ||
2405 | my $section; | |
2406 | my $group; | |
2407 | ||
2408 | my $empty_conf = { | |
2409 | rules => [], | |
2410 | options => {}, | |
2411 | aliases => {}, | |
2412 | groups => {}, | |
2413 | group_comments => {}, | |
2414 | ipset => {} , | |
2415 | ipset_comments => {}, | |
2416 | }; | |
2417 | ||
e5cd1ee0 | 2418 | return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster'); |
1210ae94 DM |
2419 | } |
2420 | ||
06320eb0 DM |
2421 | sub run_locked { |
2422 | my ($code, @param) = @_; | |
2423 | ||
2424 | my $timeout = 10; | |
2425 | ||
2426 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
2427 | ||
2428 | die $@ if $@; | |
2429 | ||
2430 | return $res; | |
2431 | } | |
2432 | ||
5e1267a5 DM |
2433 | sub read_local_vm_config { |
2434 | ||
2435 | my $openvz = {}; | |
5e1267a5 DM |
2436 | my $qemu = {}; |
2437 | ||
c8301d63 | 2438 | my $vmdata = { openvz => $openvz, qemu => $qemu }; |
5e1267a5 | 2439 | |
c8301d63 DM |
2440 | my $vmlist = PVE::Cluster::get_vmlist(); |
2441 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
2442 | my $ids = $vmlist->{ids}; | |
2443 | ||
2444 | foreach my $vmid (keys %$ids) { | |
2445 | next if !$vmid; # skip VE0 | |
2446 | my $d = $ids->{$vmid}; | |
2447 | next if !$d->{node} || $d->{node} ne $nodename; | |
2448 | next if !$d->{type}; | |
2449 | if ($d->{type} eq 'openvz') { | |
d9fee004 DM |
2450 | if ($have_pve_manager) { |
2451 | my $cfspath = PVE::OpenVZ::cfs_config_path($vmid); | |
2452 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2453 | $openvz->{$vmid} = $conf; | |
2454 | } | |
c8301d63 DM |
2455 | } |
2456 | } elsif ($d->{type} eq 'qemu') { | |
d9fee004 DM |
2457 | if ($have_qemu_server) { |
2458 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); | |
2459 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2460 | $qemu->{$vmid} = $conf; | |
2461 | } | |
c8301d63 | 2462 | } |
5e1267a5 DM |
2463 | } |
2464 | } | |
d9fee004 | 2465 | |
5e1267a5 DM |
2466 | return $vmdata; |
2467 | }; | |
2468 | ||
e7b35711 | 2469 | sub load_vmfw_conf { |
a523e057 | 2470 | my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_; |
e7b35711 DM |
2471 | |
2472 | my $vmfw_conf = {}; | |
2473 | ||
21053409 | 2474 | $dir = $pvefw_conf_dir if !defined($dir); |
8aef5177 DM |
2475 | |
2476 | my $filename = "$dir/$vmid.fw"; | |
e7b35711 | 2477 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 2478 | $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose); |
708ba714 | 2479 | $vmfw_conf->{vmid} = $vmid; |
e7b35711 DM |
2480 | } |
2481 | ||
2482 | return $vmfw_conf; | |
2483 | } | |
2484 | ||
464f933e | 2485 | my $format_rules = sub { |
dba740a9 | 2486 | my ($rules, $allow_iface) = @_; |
464f933e DM |
2487 | |
2488 | my $raw = ''; | |
2489 | ||
2490 | foreach my $rule (@$rules) { | |
c14dacdf | 2491 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') { |
464f933e DM |
2492 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; |
2493 | $raw .= uc($rule->{type}); | |
7ca36671 DM |
2494 | if ($rule->{macro}) { |
2495 | $raw .= " $rule->{macro}($rule->{action})"; | |
2496 | } else { | |
2497 | $raw .= " " . $rule->{action}; | |
2498 | } | |
dba740a9 DM |
2499 | if ($allow_iface && $rule->{iface}) { |
2500 | $raw .= " -i $rule->{iface}"; | |
2501 | } | |
c14dacdf DM |
2502 | |
2503 | if ($rule->{type} ne 'group') { | |
dba740a9 DM |
2504 | $raw .= " -source $rule->{source}" if $rule->{source}; |
2505 | $raw .= " -dest $rule->{dest}" if $rule->{dest}; | |
2506 | $raw .= " -p $rule->{proto}" if $rule->{proto}; | |
2507 | $raw .= " -dport $rule->{dport}" if $rule->{dport}; | |
2508 | $raw .= " -sport $rule->{sport}" if $rule->{sport}; | |
c14dacdf DM |
2509 | } |
2510 | ||
cbb5d6f3 | 2511 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
2512 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
2513 | $raw .= "\n"; | |
2514 | } else { | |
c14dacdf | 2515 | die "unknown rule type '$rule->{type}'"; |
464f933e DM |
2516 | } |
2517 | } | |
2518 | ||
2519 | return $raw; | |
2520 | }; | |
2521 | ||
2522 | my $format_options = sub { | |
68c90e21 DM |
2523 | my ($options) = @_; |
2524 | ||
2525 | my $raw = ''; | |
464f933e DM |
2526 | |
2527 | $raw .= "[OPTIONS]\n\n"; | |
2528 | foreach my $opt (keys %$options) { | |
2529 | $raw .= "$opt: $options->{$opt}\n"; | |
2530 | } | |
2531 | $raw .= "\n"; | |
68c90e21 DM |
2532 | |
2533 | return $raw; | |
464f933e DM |
2534 | }; |
2535 | ||
0d5f0a0f DM |
2536 | my $format_aliases = sub { |
2537 | my ($aliases) = @_; | |
2538 | ||
2539 | my $raw = ''; | |
2540 | ||
2541 | $raw .= "[ALIASES]\n\n"; | |
2542 | foreach my $k (keys %$aliases) { | |
81d574a7 DM |
2543 | my $e = $aliases->{$k}; |
2544 | $raw .= "$e->{name} $e->{cidr}"; | |
2545 | $raw .= " # " . encode('utf8', $e->{comment}) | |
2546 | if $e->{comment} && $e->{comment} !~ m/^\s*$/; | |
2547 | $raw .= "\n"; | |
0d5f0a0f DM |
2548 | } |
2549 | $raw .= "\n"; | |
2550 | ||
2551 | return $raw; | |
2552 | }; | |
2553 | ||
1210ae94 DM |
2554 | my $format_ipsets = sub { |
2555 | my ($fw_conf) = @_; | |
2556 | ||
9d6f90e6 DM |
2557 | my $raw = ''; |
2558 | ||
1210ae94 DM |
2559 | foreach my $ipset (sort keys %{$fw_conf->{ipset}}) { |
2560 | if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) { | |
2561 | my $utf8comment = encode('utf8', $comment); | |
2562 | $raw .= "[IPSET $ipset] # $utf8comment\n\n"; | |
2563 | } else { | |
2564 | $raw .= "[IPSET $ipset]\n\n"; | |
2565 | } | |
2566 | my $options = $fw_conf->{ipset}->{$ipset}; | |
6e299ae3 | 2567 | |
1210ae94 DM |
2568 | my $nethash = {}; |
2569 | foreach my $entry (@$options) { | |
2570 | $nethash->{$entry->{cidr}} = $entry; | |
2571 | } | |
2572 | ||
2573 | foreach my $cidr (sort keys %$nethash) { | |
2574 | my $entry = $nethash->{$cidr}; | |
2575 | my $line = $entry->{nomatch} ? '!' : ''; | |
2576 | $line .= $entry->{cidr}; | |
2577 | $line .= " # " . encode('utf8', $entry->{comment}) | |
2578 | if $entry->{comment} && $entry->{comment} !~ m/^\s*$/; | |
2579 | $raw .= "$line\n"; | |
2580 | } | |
2581 | ||
2582 | $raw .= "\n"; | |
9d6f90e6 | 2583 | } |
e34d0e58 | 2584 | |
9d6f90e6 DM |
2585 | return $raw; |
2586 | }; | |
2587 | ||
464f933e DM |
2588 | sub save_vmfw_conf { |
2589 | my ($vmid, $vmfw_conf) = @_; | |
2590 | ||
2591 | my $raw = ''; | |
2592 | ||
2593 | my $options = $vmfw_conf->{options}; | |
89ea63c8 | 2594 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 2595 | |
e76a9f53 | 2596 | my $aliases = $vmfw_conf->{aliases}; |
89ea63c8 | 2597 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e76a9f53 | 2598 | |
89ea63c8 | 2599 | $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset}; |
1210ae94 | 2600 | |
8824b2f0 | 2601 | my $rules = $vmfw_conf->{rules} || []; |
89ea63c8 | 2602 | if ($rules && scalar(@$rules)) { |
464f933e DM |
2603 | $raw .= "[RULES]\n\n"; |
2604 | $raw .= &$format_rules($rules, 1); | |
2605 | $raw .= "\n"; | |
2606 | } | |
2607 | ||
21053409 DM |
2608 | mkdir $pvefw_conf_dir; |
2609 | ||
2610 | my $filename = "$pvefw_conf_dir/$vmid.fw"; | |
464f933e DM |
2611 | PVE::Tools::file_set_contents($filename, $raw); |
2612 | } | |
2613 | ||
6fc63ffd | 2614 | sub read_vm_firewall_configs { |
a523e057 | 2615 | my ($cluster_conf, $vmdata, $dir, $verbose) = @_; |
8aef5177 | 2616 | |
6fc63ffd | 2617 | my $vmfw_configs = {}; |
c8301d63 | 2618 | |
b6b8e6ad | 2619 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
a523e057 | 2620 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose); |
b6b8e6ad DM |
2621 | next if !$vmfw_conf->{options}; # skip if file does not exists |
2622 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
2623 | } | |
2624 | foreach my $vmid (keys %{$vmdata->{openvz}}) { | |
a523e057 | 2625 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose); |
e7b35711 DM |
2626 | next if !$vmfw_conf->{options}; # skip if file does not exists |
2627 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
5e1267a5 DM |
2628 | } |
2629 | ||
6fc63ffd | 2630 | return $vmfw_configs; |
5e1267a5 DM |
2631 | } |
2632 | ||
2d404ffc DM |
2633 | sub get_option_log_level { |
2634 | my ($options, $k) = @_; | |
2635 | ||
2636 | my $v = $options->{$k}; | |
178a63be | 2637 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
2638 | |
2639 | return undef if $v eq '' || $v eq 'nolog'; | |
2640 | ||
2641 | $v = $log_level_hash->{$v} if defined($log_level_hash->{$v}); | |
2642 | ||
2643 | return $v if ($v >= 0) && ($v <= 7); | |
2644 | ||
2645 | warn "unknown log level ($k = '$v')\n"; | |
2646 | ||
2647 | return undef; | |
2648 | } | |
2649 | ||
d8f2505e | 2650 | sub generate_std_chains { |
db8a955f DM |
2651 | my ($ruleset, $options, $ipversion) = @_; |
2652 | ||
2653 | my $std_chains = $pve_std_chains->{$ipversion} || die "internal error"; | |
cbb5d6f3 | 2654 | |
2d404ffc DM |
2655 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
2656 | ||
db8a955f | 2657 | my $chain; |
782c4cde | 2658 | |
db8a955f DM |
2659 | if ($ipversion == 4) { |
2660 | # same as shorewall smurflog. | |
2661 | $chain = 'PVEFW-smurflog'; | |
2662 | $std_chains->{$chain} = []; | |
2663 | ||
2664 | push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2665 | push @{$std_chains->{$chain}}, "-j DROP"; | |
2666 | } | |
2d404ffc DM |
2667 | |
2668 | # same as shorewall logflags action. | |
2669 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde | 2670 | $chain = 'PVEFW-logflags'; |
db8a955f | 2671 | $std_chains->{$chain} = []; |
12f3796e | 2672 | |
782c4cde | 2673 | # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG) |
db8a955f DM |
2674 | push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; |
2675 | push @{$std_chains->{$chain}}, "-j DROP"; | |
d8f2505e | 2676 | |
db8a955f | 2677 | foreach my $chain (keys %$std_chains) { |
d8f2505e | 2678 | ruleset_create_chain($ruleset, $chain); |
db8a955f | 2679 | foreach my $rule (@{$std_chains->{$chain}}) { |
d8f2505e DM |
2680 | if (ref($rule)) { |
2681 | ruleset_generate_rule($ruleset, $chain, $rule); | |
2682 | } else { | |
2683 | ruleset_addrule($ruleset, $chain, $rule); | |
2684 | } | |
2685 | } | |
2686 | } | |
2687 | } | |
2688 | ||
34cdedfa | 2689 | sub generate_ipset_chains { |
708ba714 | 2690 | my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_; |
34cdedfa | 2691 | |
dd7a13fd | 2692 | foreach my $ipset (keys %{$fw_conf->{ipset}}) { |
708ba714 DM |
2693 | my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $ipset); |
2694 | generate_ipset($ipset_ruleset, $ipset_chain, $fw_conf->{ipset}->{$ipset}, $clusterfw_conf, $fw_conf); | |
34cdedfa AD |
2695 | } |
2696 | } | |
2697 | ||
2698 | sub generate_ipset { | |
708ba714 DM |
2699 | my ($ipset_ruleset, $name, $options, $clusterfw_conf, $fw_conf) = @_; |
2700 | ||
2701 | die "duplicate ipset chain '$name'\n" if defined($ipset_ruleset->{$name}); | |
34cdedfa | 2702 | |
dd7a13fd DM |
2703 | my $hashsize = scalar(@$options); |
2704 | if ($hashsize <= 64) { | |
2a052ee3 | 2705 | $hashsize = 64; |
dd7a13fd | 2706 | } else { |
2a052ee3 AD |
2707 | $hashsize = round_powerof2($hashsize); |
2708 | } | |
2709 | ||
708ba714 | 2710 | $ipset_ruleset->{$name} = ["create $name hash:net family inet hashsize $hashsize maxelem $hashsize"]; |
34cdedfa | 2711 | |
30f1b100 DM |
2712 | # remove duplicates |
2713 | my $nethash = {}; | |
9d6f90e6 | 2714 | foreach my $entry (@$options) { |
c8c534f7 | 2715 | next if $entry->{errors}; # skip entries with errors |
6c221576 DM |
2716 | eval { |
2717 | my $cidr = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr}); | |
2718 | $nethash->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} }; | |
2719 | }; | |
2720 | warn $@ if $@; | |
30f1b100 DM |
2721 | } |
2722 | ||
2723 | foreach my $cidr (sort keys %$nethash) { | |
2724 | my $entry = $nethash->{$cidr}; | |
2725 | ||
9d6f90e6 DM |
2726 | my $cmd = "add $name $cidr"; |
2727 | if ($entry->{nomatch}) { | |
2728 | if ($feature_ipset_nomatch) { | |
2729 | push @{$ipset_ruleset->{$name}}, "$cmd nomatch"; | |
2730 | } else { | |
2731 | warn "ignore !$cidr - nomatch not supported by kernel\n"; | |
2732 | } | |
2733 | } else { | |
2734 | push @{$ipset_ruleset->{$name}}, $cmd; | |
2735 | } | |
34cdedfa | 2736 | } |
2a052ee3 AD |
2737 | } |
2738 | ||
2739 | sub round_powerof2 { | |
dd7a13fd | 2740 | my ($int) = @_; |
2a052ee3 | 2741 | |
dd7a13fd DM |
2742 | $int--; |
2743 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
2744 | return ++$int; | |
34cdedfa AD |
2745 | } |
2746 | ||
fca39c2c | 2747 | sub load_clusterfw_conf { |
d4cda423 | 2748 | my ($filename, $verbose) = @_; |
8aef5177 DM |
2749 | |
2750 | $filename = $clusterfw_conf_filename if !defined($filename); | |
530c005e | 2751 | |
fca39c2c | 2752 | my $cluster_conf = {}; |
8aef5177 | 2753 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 2754 | $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose); |
51bae274 | 2755 | } |
5e1267a5 | 2756 | |
fca39c2c | 2757 | return $cluster_conf; |
e5d76bde DM |
2758 | } |
2759 | ||
fca39c2c DM |
2760 | sub save_clusterfw_conf { |
2761 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
2762 | |
2763 | my $raw = ''; | |
9c7e0858 | 2764 | |
c6f5cc88 | 2765 | my $options = $cluster_conf->{options}; |
89ea63c8 | 2766 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
9c7e0858 | 2767 | |
0d5f0a0f | 2768 | my $aliases = $cluster_conf->{aliases}; |
89ea63c8 | 2769 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e34d0e58 | 2770 | |
89ea63c8 | 2771 | $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset}; |
1210ae94 | 2772 | |
c6f5cc88 | 2773 | my $rules = $cluster_conf->{rules}; |
89ea63c8 | 2774 | if ($rules && scalar(@$rules)) { |
c6f5cc88 | 2775 | $raw .= "[RULES]\n\n"; |
63c91681 | 2776 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
2777 | $raw .= "\n"; |
2778 | } | |
2779 | ||
89ea63c8 DM |
2780 | if ($cluster_conf->{groups}) { |
2781 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
2782 | my $rules = $cluster_conf->{groups}->{$group}; | |
2783 | if (my $comment = $cluster_conf->{group_comments}->{$group}) { | |
2784 | my $utf8comment = encode('utf8', $comment); | |
2785 | $raw .= "[group $group] # $utf8comment\n\n"; | |
2786 | } else { | |
2787 | $raw .= "[group $group]\n\n"; | |
2788 | } | |
0d22acb3 | 2789 | |
89ea63c8 DM |
2790 | $raw .= &$format_rules($rules, 0); |
2791 | $raw .= "\n"; | |
2792 | } | |
9c7e0858 DM |
2793 | } |
2794 | ||
21053409 | 2795 | mkdir $pvefw_conf_dir; |
fca39c2c | 2796 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); |
9c7e0858 DM |
2797 | } |
2798 | ||
8b27beb9 | 2799 | sub load_hostfw_conf { |
a523e057 | 2800 | my ($cluster_conf, $filename, $verbose) = @_; |
8aef5177 DM |
2801 | |
2802 | $filename = $hostfw_conf_filename if !defined($filename); | |
8b27beb9 DM |
2803 | |
2804 | my $hostfw_conf = {}; | |
8aef5177 | 2805 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 2806 | $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose); |
8b27beb9 DM |
2807 | } |
2808 | return $hostfw_conf; | |
2809 | } | |
2810 | ||
63c91681 DM |
2811 | sub save_hostfw_conf { |
2812 | my ($hostfw_conf) = @_; | |
2813 | ||
2814 | my $raw = ''; | |
2815 | ||
2816 | my $options = $hostfw_conf->{options}; | |
89ea63c8 | 2817 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 2818 | |
63c91681 | 2819 | my $rules = $hostfw_conf->{rules}; |
89ea63c8 | 2820 | if ($rules && scalar(@$rules)) { |
63c91681 DM |
2821 | $raw .= "[RULES]\n\n"; |
2822 | $raw .= &$format_rules($rules, 1); | |
2823 | $raw .= "\n"; | |
2824 | } | |
2825 | ||
2826 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
2827 | } | |
2828 | ||
e5d76bde | 2829 | sub compile { |
d4cda423 | 2830 | my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_; |
3dfa8a7f | 2831 | |
8aef5177 DM |
2832 | my $vmfw_configs; |
2833 | ||
2834 | if ($vmdata) { # test mode | |
2835 | my $testdir = $vmdata->{testdir} || die "no test directory specified"; | |
2836 | my $filename = "$testdir/cluster.fw"; | |
d4cda423 | 2837 | $cluster_conf = load_clusterfw_conf($filename, $verbose); |
8aef5177 DM |
2838 | |
2839 | $filename = "$testdir/host.fw"; | |
a523e057 | 2840 | $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose); |
8aef5177 | 2841 | |
a523e057 | 2842 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose); |
8aef5177 | 2843 | } else { # normal operation |
d4cda423 | 2844 | $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf; |
8aef5177 | 2845 | |
a523e057 | 2846 | $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf; |
8aef5177 DM |
2847 | |
2848 | $vmdata = read_local_vm_config(); | |
a523e057 | 2849 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose); |
8aef5177 | 2850 | } |
3dfa8a7f | 2851 | |
9268573a AD |
2852 | my ($ruleset, $ipset_ruleset) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose); |
2853 | return ($ruleset, $ipset_ruleset); | |
2854 | } | |
2855 | ||
2856 | sub compile_iptables_filter { | |
2857 | my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_; | |
2858 | ||
27083984 | 2859 | $cluster_conf->{ipset}->{venet0} = []; |
708ba714 | 2860 | my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0'); |
bfc488f6 | 2861 | |
525778d7 DM |
2862 | my $localnet; |
2863 | if ($cluster_conf->{aliases}->{local_network}) { | |
2864 | $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; | |
2865 | } else { | |
2866 | $localnet = local_network() || '127.0.0.0/8'; | |
2867 | $cluster_conf->{aliases}->{local_network} = { cidr => $localnet }; | |
2868 | } | |
2869 | ||
2870 | push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet }; | |
bfc488f6 | 2871 | |
085fd492 DM |
2872 | return ({}, {}) if !$cluster_conf->{options}->{enable}; |
2873 | ||
3fa83edf DM |
2874 | my $ruleset = {}; |
2875 | ||
dec84fcd DM |
2876 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
2877 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 2878 | |
fadb13dd | 2879 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
e34d0e58 | 2880 | |
8b27beb9 | 2881 | my $hostfw_options = $hostfw_conf->{options} || {}; |
fadb13dd | 2882 | |
88733a74 AD |
2883 | # fixme: what log level should we use here? |
2884 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
2885 | ||
097820b0 | 2886 | ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT"); |
88733a74 | 2887 | |
708ba714 | 2888 | |
e2943485 | 2889 | ruleset_create_chain($ruleset, "PVEFW-VENET-OUT"); |
708ba714 DM |
2890 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT"); |
2891 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT"); | |
e2943485 DM |
2892 | |
2893 | ruleset_create_chain($ruleset, "PVEFW-FWBR-IN"); | |
2428e394 | 2894 | ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options, $cluster_conf, $loglevel); |
e2943485 | 2895 | |
d1b41c08 | 2896 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN"); |
e2943485 DM |
2897 | |
2898 | ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT"); | |
d1b41c08 | 2899 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT"); |
e2943485 DM |
2900 | |
2901 | ruleset_create_chain($ruleset, "PVEFW-VENET-IN"); | |
2428e394 | 2902 | ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options, $cluster_conf, $loglevel); |
e2943485 | 2903 | |
708ba714 | 2904 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN"); |
e2943485 | 2905 | |
db8a955f | 2906 | generate_std_chains($ruleset, $hostfw_options, $ipversion); |
fadb13dd | 2907 | |
6d2ab017 | 2908 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 2909 | |
708ba714 DM |
2910 | my $ipset_ruleset = {}; |
2911 | ||
1a9978ed DM |
2912 | if ($hostfw_enable) { |
2913 | eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf); }; | |
2914 | warn $@ if $@; # just to be sure - should not happen | |
2915 | } | |
3fa83edf | 2916 | |
708ba714 | 2917 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN"); |
62689a1e | 2918 | |
6158271d | 2919 | # generate firewall rules for QEMU VMs |
3fa83edf | 2920 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
1a9978ed DM |
2921 | eval { |
2922 | my $conf = $vmdata->{qemu}->{$vmid}; | |
2923 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
2924 | return if !$vmfw_conf; | |
1a9978ed | 2925 | |
708ba714 DM |
2926 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf); |
2927 | ||
1a9978ed DM |
2928 | foreach my $netid (keys %$conf) { |
2929 | next if $netid !~ m/^net(\d+)$/; | |
2930 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
2931 | next if !$net->{firewall}; | |
2932 | my $iface = "tap${vmid}i$1"; | |
2933 | ||
2934 | my $macaddr = $net->{macaddr}; | |
2935 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
2936 | $vmfw_conf, $vmid, 'IN'); | |
2937 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
2938 | $vmfw_conf, $vmid, 'OUT'); | |
2939 | } | |
2940 | }; | |
2941 | warn $@ if $@; # just to be sure - should not happen | |
3fa83edf | 2942 | } |
c8301d63 DM |
2943 | |
2944 | # generate firewall rules for OpenVZ containers | |
2945 | foreach my $vmid (keys %{$vmdata->{openvz}}) { | |
1a9978ed DM |
2946 | eval { |
2947 | my $conf = $vmdata->{openvz}->{$vmid}; | |
c8301d63 | 2948 | |
1a9978ed DM |
2949 | my $vmfw_conf = $vmfw_configs->{$vmid}; |
2950 | return if !$vmfw_conf; | |
c8301d63 | 2951 | |
708ba714 DM |
2952 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf); |
2953 | ||
a34cfdd0 DM |
2954 | if ($vmfw_conf->{options}->{enable}) { |
2955 | if ($conf->{ip_address} && $conf->{ip_address}->{value}) { | |
2956 | my $ip = $conf->{ip_address}->{value}; | |
2957 | $ip =~ s/\s+/,/g; | |
2958 | parse_address_list($ip); # make sure we have a valid $ip list | |
27083984 | 2959 | |
a34cfdd0 | 2960 | my @ips = split(',', $ip); |
27083984 | 2961 | |
a34cfdd0 DM |
2962 | foreach my $singleip (@ips) { |
2963 | my $venet0ipset = {}; | |
2964 | $venet0ipset->{cidr} = $singleip; | |
2965 | push @{$cluster_conf->{ipset}->{venet0}}, $venet0ipset; | |
2966 | } | |
c8301d63 | 2967 | |
a34cfdd0 DM |
2968 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN'); |
2969 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT'); | |
2970 | } | |
1a9978ed | 2971 | } |
530c005e | 2972 | |
1a9978ed DM |
2973 | if ($conf->{netif} && $conf->{netif}->{value}) { |
2974 | my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value}); | |
2975 | foreach my $netid (keys %$netif) { | |
2976 | my $d = $netif->{$netid}; | |
a34cfdd0 DM |
2977 | my $bridge = $d->{bridge}; |
2978 | next if !$bridge || $bridge !~ m/^vmbr\d+(v(\d+))?f$/; # firewall enabled ? | |
1a9978ed DM |
2979 | my $macaddr = $d->{mac}; |
2980 | my $iface = $d->{host_ifname}; | |
2981 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
2982 | $vmfw_conf, $vmid, 'IN'); | |
2983 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
2984 | $vmfw_conf, $vmid, 'OUT'); | |
2985 | } | |
c8301d63 | 2986 | } |
1a9978ed DM |
2987 | }; |
2988 | warn $@ if $@; # just to be sure - should not happen | |
c8301d63 | 2989 | } |
c0413e35 | 2990 | |
097820b0 AD |
2991 | if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){ |
2992 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS"); | |
2993 | } | |
2994 | ||
708ba714 | 2995 | generate_ipset_chains($ipset_ruleset, undef, $cluster_conf); |
27083984 | 2996 | |
3dfa8a7f | 2997 | return ($ruleset, $ipset_ruleset); |
3fa83edf DM |
2998 | } |
2999 | ||
3000 | sub get_ruleset_status { | |
4bd0a9c4 | 3001 | my ($ruleset, $active_chains, $digest_fn, $verbose) = @_; |
3fa83edf DM |
3002 | |
3003 | my $statushash = {}; | |
3004 | ||
3005 | foreach my $chain (sort keys %$ruleset) { | |
4bd0a9c4 | 3006 | my $sig = &$digest_fn($ruleset->{$chain}); |
9bf7d929 | 3007 | |
3fa83edf DM |
3008 | $statushash->{$chain}->{sig} = $sig; |
3009 | ||
3010 | my $oldsig = $active_chains->{$chain}; | |
3011 | if (!defined($oldsig)) { | |
3012 | $statushash->{$chain}->{action} = 'create'; | |
3013 | } else { | |
3014 | if ($oldsig eq $sig) { | |
3015 | $statushash->{$chain}->{action} = 'exists'; | |
3016 | } else { | |
3017 | $statushash->{$chain}->{action} = 'update'; | |
3018 | } | |
3019 | } | |
3020 | print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose; | |
3021 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
3022 | print "\t$cmd\n" if $verbose; | |
3023 | } | |
3024 | } | |
3025 | ||
3026 | foreach my $chain (sort keys %$active_chains) { | |
3027 | if (!defined($ruleset->{$chain})) { | |
3028 | my $sig = $active_chains->{$chain}; | |
3029 | $statushash->{$chain}->{action} = 'delete'; | |
3030 | $statushash->{$chain}->{sig} = $sig; | |
3031 | print "delete $chain ($sig)\n" if $verbose; | |
3032 | } | |
6158271d | 3033 | } |
2a052ee3 | 3034 | |
3fa83edf DM |
3035 | return $statushash; |
3036 | } | |
3037 | ||
3fa83edf DM |
3038 | sub print_sig_rule { |
3039 | my ($chain, $sig) = @_; | |
3040 | ||
09d5f68e DM |
3041 | # We just use this to store a SHA1 checksum used to detect changes |
3042 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
3043 | } |
3044 | ||
df7cb349 | 3045 | sub get_ruleset_cmdlist { |
a84f4d96 | 3046 | my ($ruleset, $verbose) = @_; |
3fa83edf | 3047 | |
3fa83edf | 3048 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
cbb5d6f3 | 3049 | |
4bd0a9c4 DM |
3050 | my ($active_chains, $hooks) = iptables_get_chains(); |
3051 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose); | |
3fa83edf DM |
3052 | |
3053 | # create missing chains first | |
3054 | foreach my $chain (sort keys %$ruleset) { | |
3055 | my $stat = $statushash->{$chain}; | |
3056 | die "internal error" if !$stat; | |
3057 | next if $stat->{action} ne 'create'; | |
886aba9c | 3058 | |
3fa83edf DM |
3059 | $cmdlist .= ":$chain - [0:0]\n"; |
3060 | } | |
3061 | ||
4bd0a9c4 | 3062 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { |
55fad3b7 DM |
3063 | my $chain = "PVEFW-$h"; |
3064 | if ($ruleset->{$chain} && !$hooks->{$h}) { | |
3065 | $cmdlist .= "-A $h -j $chain\n"; | |
4bd0a9c4 | 3066 | } |
3fa83edf DM |
3067 | } |
3068 | ||
3069 | foreach my $chain (sort keys %$ruleset) { | |
3070 | my $stat = $statushash->{$chain}; | |
3071 | die "internal error" if !$stat; | |
3072 | ||
3073 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
3074 | $cmdlist .= "-F $chain\n"; | |
3075 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
3076 | $cmdlist .= "$cmd\n"; | |
3077 | } | |
3078 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
3079 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 3080 | die "internal error"; # this should not happen |
3fa83edf DM |
3081 | } elsif ($stat->{action} eq 'exists') { |
3082 | # do nothing | |
3083 | } else { | |
3084 | die "internal error - unknown status '$stat->{action}'"; | |
3085 | } | |
3086 | } | |
3087 | ||
f5d28682 DM |
3088 | foreach my $chain (keys %$statushash) { |
3089 | next if $statushash->{$chain}->{action} ne 'delete'; | |
3090 | $cmdlist .= "-F $chain\n"; | |
3091 | } | |
3092 | foreach my $chain (keys %$statushash) { | |
3093 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
3094 | next if $chain eq 'PVEFW-INPUT'; |
3095 | next if $chain eq 'PVEFW-OUTPUT'; | |
3096 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
3097 | $cmdlist .= "-X $chain\n"; |
3098 | } | |
3099 | ||
3f95d14a | 3100 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
4bd0a9c4 | 3101 | |
3fa83edf DM |
3102 | $cmdlist .= "COMMIT\n"; |
3103 | ||
3f95d14a | 3104 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
3105 | } |
3106 | ||
34cdedfa | 3107 | sub get_ipset_cmdlist { |
dd7a13fd | 3108 | my ($ruleset, $verbose) = @_; |
34cdedfa AD |
3109 | |
3110 | my $cmdlist = ""; | |
3111 | ||
dd7a13fd DM |
3112 | my $delete_cmdlist = ""; |
3113 | ||
4bd0a9c4 DM |
3114 | my $active_chains = ipset_get_chains(); |
3115 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose); | |
34cdedfa | 3116 | |
e34d0e58 | 3117 | # remove stale _swap chains |
30f1b100 DM |
3118 | foreach my $chain (keys %$active_chains) { |
3119 | if ($chain =~ m/^PVEFW-\S+_swap$/) { | |
3120 | $cmdlist .= "destroy $chain\n"; | |
3121 | } | |
3122 | } | |
3123 | ||
dd7a13fd DM |
3124 | foreach my $chain (sort keys %$ruleset) { |
3125 | my $stat = $statushash->{$chain}; | |
3126 | die "internal error" if !$stat; | |
2a052ee3 | 3127 | |
dd7a13fd DM |
3128 | if ($stat->{action} eq 'create') { |
3129 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
34cdedfa AD |
3130 | $cmdlist .= "$cmd\n"; |
3131 | } | |
dd7a13fd | 3132 | } |
34cdedfa | 3133 | |
dd7a13fd DM |
3134 | if ($stat->{action} eq 'update') { |
3135 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 3136 | |
dd7a13fd DM |
3137 | foreach my $cmd (@{$ruleset->{$chain}}) { |
3138 | $cmd =~ s/$chain/$chain_swap/; | |
3139 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 3140 | } |
dd7a13fd DM |
3141 | $cmdlist .= "swap $chain_swap $chain\n"; |
3142 | $cmdlist .= "flush $chain_swap\n"; | |
3143 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 3144 | } |
34cdedfa | 3145 | |
dd7a13fd | 3146 | } |
3f95d14a | 3147 | |
dd7a13fd DM |
3148 | foreach my $chain (keys %$statushash) { |
3149 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2a052ee3 | 3150 | |
dd7a13fd DM |
3151 | $delete_cmdlist .= "flush $chain\n"; |
3152 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
3153 | } |
3154 | ||
dd7a13fd | 3155 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 3156 | |
dd7a13fd | 3157 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
3158 | } |
3159 | ||
6b9f68a2 | 3160 | sub apply_ruleset { |
34cdedfa | 3161 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_; |
6b9f68a2 DM |
3162 | |
3163 | enable_bridge_firewall(); | |
3164 | ||
cbb5d6f3 | 3165 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
81a0bf43 | 3166 | get_ipset_cmdlist($ipset_ruleset, undef, $verbose); |
6b9f68a2 | 3167 | |
81a0bf43 | 3168 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose); |
2a052ee3 | 3169 | |
81a0bf43 DM |
3170 | if ($verbose) { |
3171 | if ($ipset_changes) { | |
3172 | print "ipset changes:\n"; | |
3173 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
3174 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
3175 | } | |
3f95d14a | 3176 | |
81a0bf43 DM |
3177 | if ($changes) { |
3178 | print "iptables changes:\n"; | |
3179 | print $cmdlist; | |
3180 | } | |
3181 | } | |
3fa83edf | 3182 | |
2a052ee3 | 3183 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 3184 | |
3fa83edf DM |
3185 | iptables_restore_cmdlist($cmdlist); |
3186 | ||
dd7a13fd | 3187 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 3188 | |
6158271d | 3189 | # test: re-read status and check if everything is up to date |
4bd0a9c4 | 3190 | my $active_chains = iptables_get_chains(); |
81a0bf43 | 3191 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0); |
3fa83edf DM |
3192 | |
3193 | my $errors; | |
3194 | foreach my $chain (sort keys %$ruleset) { | |
3195 | my $stat = $statushash->{$chain}; | |
3196 | if ($stat->{action} ne 'exists') { | |
3197 | warn "unable to update chain '$chain'\n"; | |
3198 | $errors = 1; | |
3199 | } | |
3200 | } | |
b6360c3f | 3201 | |
3fa83edf | 3202 | die "unable to apply firewall changes\n" if $errors; |
46a2ac1f AD |
3203 | |
3204 | update_nf_conntrack_max($hostfw_conf); | |
3205 | ||
3206 | update_nf_conntrack_tcp_timeout_established($hostfw_conf); | |
3207 | ||
b6360c3f DM |
3208 | } |
3209 | ||
490cdead DM |
3210 | sub update_nf_conntrack_max { |
3211 | my ($hostfw_conf) = @_; | |
3212 | ||
3213 | my $max = 65536; # reasonable default | |
3214 | ||
3215 | my $options = $hostfw_conf->{options} || {}; | |
3216 | ||
3217 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
3218 | $max = $options->{nf_conntrack_max}; | |
3219 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
3220 | } | |
3221 | ||
3222 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
3223 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
3224 | ||
3225 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
3226 | ||
3227 | if ($current != $max) { | |
3228 | my $hashsize = int($max/4); | |
3229 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
3230 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
3231 | } | |
3232 | } | |
3233 | ||
28c082a1 AD |
3234 | sub update_nf_conntrack_tcp_timeout_established { |
3235 | my ($hostfw_conf) = @_; | |
3236 | ||
3237 | my $options = $hostfw_conf->{options} || {}; | |
3238 | ||
3239 | my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000; | |
3240 | ||
3241 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value); | |
3242 | } | |
3243 | ||
c4a2e5ae DM |
3244 | sub remove_pvefw_chains { |
3245 | ||
3246 | my ($chash, $hooks) = iptables_get_chains(); | |
3247 | my $cmdlist = "*filter\n"; | |
3248 | ||
3249 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
3250 | if ($hooks->{$h}) { | |
3251 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
3252 | } | |
3253 | } | |
cbb5d6f3 | 3254 | |
c4a2e5ae DM |
3255 | foreach my $chain (keys %$chash) { |
3256 | $cmdlist .= "-F $chain\n"; | |
3257 | } | |
3258 | ||
3259 | foreach my $chain (keys %$chash) { | |
3260 | $cmdlist .= "-X $chain\n"; | |
3261 | } | |
3262 | $cmdlist .= "COMMIT\n"; | |
3263 | ||
3264 | iptables_restore_cmdlist($cmdlist); | |
55fad3b7 DM |
3265 | |
3266 | my $ipset_chains = ipset_get_chains(); | |
3267 | ||
3268 | $cmdlist = ""; | |
3269 | ||
3270 | foreach my $chain (keys %$ipset_chains) { | |
3271 | $cmdlist .= "flush $chain\n"; | |
3272 | $cmdlist .= "destroy $chain\n"; | |
3273 | } | |
3274 | ||
3275 | ipset_restore_cmdlist($cmdlist) if $cmdlist; | |
c4a2e5ae DM |
3276 | } |
3277 | ||
8b453a09 DM |
3278 | sub init { |
3279 | my $cluster_conf = load_clusterfw_conf(); | |
3280 | my $cluster_options = $cluster_conf->{options}; | |
3281 | my $enable = $cluster_options->{enable}; | |
3282 | ||
3283 | return if !$enable; | |
3284 | ||
3285 | # load required modules here | |
3286 | } | |
3287 | ||
6b9f68a2 | 3288 | sub update { |
6b9f68a2 | 3289 | my $code = sub { |
3dfa8a7f DM |
3290 | |
3291 | my $cluster_conf = load_clusterfw_conf(); | |
3292 | my $cluster_options = $cluster_conf->{options}; | |
3293 | ||
55fad3b7 | 3294 | if (!$cluster_options->{enable}) { |
b22130d3 | 3295 | PVE::Firewall::remove_pvefw_chains(); |
3dfa8a7f DM |
3296 | return; |
3297 | } | |
3298 | ||
3299 | my $hostfw_conf = load_hostfw_conf(); | |
3300 | ||
3301 | my ($ruleset, $ipset_ruleset) = compile($cluster_conf, $hostfw_conf); | |
490cdead | 3302 | |
d4cda423 | 3303 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset); |
6b9f68a2 DM |
3304 | }; |
3305 | ||
3306 | run_locked($code); | |
3307 | } | |
3308 | ||
b6360c3f | 3309 | 1; |